JP3369965B2 - Supervisory control device in optical wavelength multiplexing transmission system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory controller in an optical wavelength division multiplexing transmission system, and more particularly to a multiplexer,
The present invention relates to a supervisory control device in an optical wavelength multiplexing transmission system including an optical wavelength multiplexing device, an intermediate repeater device, and an optical fiber transmission line connecting these devices.

[0002]

2. Description of the Related Art FIG. 16 shows a configuration example of a conventional optical transmission system. Referring to FIG. 1, the terminal station 10 includes a multiplexer 12 including a transmitter, the relay station 14 includes a regeneration intermediate relay apparatus 16, the relay station 18 includes a linear intermediate relay apparatus 20, and the relay station 22 includes The reproducing intermediate relay device 24 is a multiplexing device including a receiving unit at the terminal station 26.
28 are installed respectively.

As shown in FIG. 16, the multiplexer 12 includes an optical fiber 36, a regeneration intermediate repeater 16, an optical fiber 38, a linear intermediate repeater 20, an optical fiber 40, a regeneration intermediate repeater 24, and an optical fiber 42. And is connected to the multiplexer 28 facing each other.

This optical transmission system conforms to the SDH transmission system conforming to the new synchronous interface recommended (G.707, G.783) by the International Telegraph and Telephone Advisory Committee (ITU-T).
Low speed signal input to the multiplexer 12 and the multiplexer 28
The low speed signal output from the ST is in this example an ST that corresponds to the above recommendations recommended by the Japanese Telecommunications Technical Committee (TTC).
M-0 frame structure signal, and also multiplexer 12
The high-speed signal output from and the high-speed signal input to the multiplexer 28 are shown in Fig. 17 recommended by ITU-T in this example.
It is a signal of the frame structure of STM-1.

For low-speed and high-speed signals, such STM frame is used to enhance the monitoring function to improve the system reliability. That is, the STM frame has a maintenance and operation information area (section overhead: SOH), and the section overhead is the relay section overhead (RSO).
H), pointer, and terminal section overhead (MSOH).

The relay section overhead is used between the regenerating intermediate relay devices and between the regenerating intermediate relay device and the multiplexing device, and frame synchronization, error monitoring, and maintenance operation information are defined. The terminal section overhead is used between the multiplexing devices, and system switching, error monitoring, and maintenance operation information are defined. In such an optical transmission system, the regeneration intermediate repeater performs processing (termination) of the repeater section overhead in the STM frame,
The multiplexer performs all processing (termination) of the section overhead in the STM frame.

Therefore, the regeneration intermediate repeaters 16 and 24 can terminate the repeater section overhead. However, since the linear intermediate repeater 20 is an analog amplification of light, it cannot terminate the repeater section overhead of the main signal 32.
In this optical transmission system, a dedicated supervisory channel (LSV) 34 by wavelength division multiplexing is used. Monitoring by considering the independence of main signal transmission and supervisory channel transfer (the supervisory channel functions when the main signal is interrupted, in-service maintenance of the supervisory channel does not affect the main signal transmission), and the loss of dispersion shift fiber For the wavelength value λs of the channel, in this example
Wavelength values outside the optical amplification band in the vicinity of the 1.5 μm band are used, and in this example, the information transferred in the supervisory channel conforms to the relay section overhead transferred in the main signal 32.

The operation of FIG. 16 will be described.

The multiplexer 12 multiplexes three low speed optical signals to form a high speed optical signal (main signal: wavelength value λ1) 32.
The multiplexer 12 also forms the monitoring information and the like, and the wavelength value λs of the frame structure conforming to the relay section overhead which is transferred by the main signal including the formed monitoring information.
To form the supervisory channel optical signal 34 of. The multiplexer 12 also multiplexes the formed high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel optical signal 34 having the wavelength value λs, and reproduces the multiplexed optical signal via the optical fiber 36. Send to 16.

The regenerating intermediate repeater 16 demultiplexes the input multiplexed high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel optical signal 34 having the wavelength value λs. The regenerative intermediate repeater 16 also includes a demultiplexed high-speed optical signal 32 produced by the transmission of the optical fiber 36.
To compensate for the attenuation distortion and the waveform distortion of the high-speed electric signal due to the conversion into the high-speed optical signal 32. The regenerative intermediate repeater 16 also receives the demultiplexed supervisory channel optical signal produced by the transmission of the optical fiber 36.
Attenuating distortion and waveform distortion of the monitor channel electric signal due to conversion of 34 into the electric signal is compensated, and the compensated monitor channel electric signal is converted into the monitor channel optical signal 34. The regeneration intermediate repeater 16 also multiplexes the converted high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel optical signal 34 having the wavelength value λs,
The multiplexed optical signal is sent to the linear intermediate repeater 20 via the optical fiber 38. In this case, the regeneration intermediate repeater 16 terminates the repeater section overhead of the high-speed optical signal 32 and the supervisory channel optical signal 34.

The linear intermediate repeater 20 inputs the multiplexed main signal 32 having the wavelength value λ1 and the supervisory channel signal having the wavelength value λs.
34 and are separated. The linear intermediate repeater 20 also includes, in this example, an optical fiber type amplifier circuit, which compensates for the attenuation distortion of the high speed optical signal 32 caused by the transmission of the optical fiber 38. The linear intermediate repeater 20 also compensates for the attenuation distortion and waveform distortion of the supervisory channel electrical signal due to the conversion of the demultiplexed supervisory channel optical signal 34 generated by the transmission of the optical fiber 38 into the electrical signal, and the compensated supervisory channel is compensated. The electrical signal is converted into a supervisory channel optical signal 34. The linear intermediate repeater 20 also multiplexes the compensated and converted high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel optical signal 34 having the wavelength value λs, and the multiplexed optical signal is sent to the optical fiber 40.
To the reproduction intermediate relay device 24 via. In this case, the linear intermediate repeater 20 terminates the supervisory channel optical signal 34.

The regeneration intermediate relay device 24 is a regeneration intermediate relay device 16
Similarly, the demultiplexed high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel optical signal 34 having the wavelength value λs are demultiplexed, the attenuation distortion and the waveform distortion of the demultiplexed signals are compensated, and the compensated wavelength is obtained. The high-speed optical signal 32 with the value λ1 and the supervisory channel optical signal 34 with the wavelength value λs are combined, and the combined optical signal is combined with the optical fiber.
To the multiplexer 28 via 42. Also like device 16,
It terminates the repeater section overhead of the high speed optical signal 32 and the supervisory channel optical signal 34.

The multiplexer 28 inputs the multiplexed high-speed optical signal 32 having the wavelength value λ1 and the supervisory channel signal 34 having the wavelength value λs.
Demultiplexes and. The multiplexer 28 also separates the demultiplexed high speed optical signal 32 into three low speed optical signals and outputs them. The multiplexer 28 also terminates the section overhead of the demultiplexed high speed optical signal 32 and terminates the demultiplexed supervisory channel optical signal 34.

As described above, in the conventional optical transmission system, the multiplexer and the intermediate repeater wavelength-multiplex the high-speed optical signal (main signal) having the wavelength value λ1 and the supervisory channel signal having the wavelength value λs into the same optical fiber. Transmission in one (single) direction. According to such an optical transmission system, it is not necessary to manage the wavelength multiplexing number of the main signal light or the transmission direction.

[0015]

However, according to the optical transmission system that performs optical wavelength division multiplexing transmission in one direction,
A plurality of main signal lights having different wavelength values and one supervisory channel signal light having a different wavelength value from the main signal lights are transmitted in one optical fiber. Further, according to the optical transmission system that performs bi-directional optical wavelength division multiplexing transmission, a plurality of main signal lights having different wavelength values in one optical fiber in both directions and one supervisory channel having a different wavelength value from these main signal lights. Signal light is transmitted.

Therefore, in such an optical transmission system, the management of the number of optical wavelength division multiplexing, the management of the directivity of the optical transmission direction, and the management of the connection destination indicating which multiplexing apparatus transmits signal light to which multiplexing apparatus are carried out. However, there is a problem that proper control based on the management information is required.

The present invention solves the above-mentioned drawbacks of the prior art, and manages the wavelength division multiplexing number, the directionality of the optical transmission direction, the connection destination, etc., or an optical wavelength that can be appropriately controlled based on these management information. An object is to provide a supervisory control device in a multiplex transmission system.

[0018]

In order to solve the above problems, the present invention provides a first terminal station with at least first and second terminals.
In the supervisory control apparatus in the optical wavelength multiplexing transmission system having the optical multiplexer, the first optical wavelength multiplexer, and the first network management terminal means, the first multiplexer is a plurality of predetermined plurality. First multiplexing means for receiving the low-speed optical signal, converting each received low-speed optical signal into a corresponding electric signal, and multiplexing the converted electric signals to form a high-speed signal;
The high-speed signal is received from the first multiplexing means, the first identification number value data of the first multiplexing device which is the connection source, and the third identification device of the third multiplexing device which is the connection destination of this multiplexing device. The identification number value data is generated and output, and the connection destination of the high speed signal receiving the generated third identification number value data is located at the position indicating the connection source of the high speed signal receiving the generated first identification number value data. And a first transmitting means for converting the inserted high-speed signal into a first high-speed optical signal which is an optical signal having a corresponding first wavelength value and outputting the converted signal. Second multiplexer for receiving a plurality of predetermined low speed optical signals, converting each received low speed optical signal into a corresponding electric signal, and multiplexing each converted electric signal to form a high speed signal. Means and a second multiplexing device which is a connection source and receives a high-speed signal from the second multiplexing device. Of the second identification number value data and the fourth identification number value data of the fourth multiplexing device to which the multiplexing device is connected, and outputs the generated second identification number value data. At the position indicating the connection source of the high-speed signal, each is inserted at the position indicating the connection destination of the high-speed signal that has received the generated fourth identification number value data, and the inserted high-speed signal has the corresponding second wavelength value. A second transmission means for converting and outputting to a second high-speed optical signal which is an optical signal;
The optical wavelength multiplexing device in (1), a first wavelength multiplexing means for wavelength multiplexing the first high speed optical signal from the first transmitting means and the second high speed optical signal from the second transmitting means, Receiving the first and third identification number value data from the first transmitting means, and the second
Receiving the second and fourth identification number value data from the transmitting means of
The first identification number value data indicating the received connection source is at the first position, the third identification number value data indicating the received connection destination is at the second position, and the second identification indicating the connection source received A supervisory channel frame in which the number value data is inserted in the third position, and the fourth identification number value data indicating the received connection destination is inserted in the fourth position is generated and output, and the generated supervisory channel Third transmitting means for converting the frame electric signal into a monitor channel frame optical signal which is an optical signal having a corresponding first monitor wavelength value and outputting the monitor channel frame optical signal, and a monitor channel frame optical signal from the third transmitting means. A second wavelength multiplexing means for wavelength-multiplexing the high-speed optical signal from the first wavelength multiplexing means, and at least first to fourth positions in the supervisory channel frame electrical signal from the third transmitting means. The identification number value data To a first and a interface unit, the first network management terminal unit may receive the identification number value data which has been inserted from the first interface means to the first to fourth position.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a supervisory control device in an optical wavelength division multiplexing transmission system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the configuration of a terminal station 50 to which the supervisory control device in the optical wavelength division multiplexing transmission system of the present invention according to the first embodiment is applied, and FIG.
1 shows the configuration of a terminal station 52 to which a supervisory controller in an optical wavelength division multiplex transmission system according to the present invention is applied. In this example, the optical wavelength division multiplexing transmission system of FIGS. 1 and 2 is a bidirectional optical wavelength division multiplexing transmission system.

The terminal station 50 is a # 1 multiplexer 54 comprising a transmitter.
And a # 2 multiplexer 56, a # 3 multiplexer 58 and a # 4 multiplexer 60 which are receivers, a bidirectional optical wavelength multiplexer 62 which is a transceiver, and a network management terminal device.
In addition, the terminal station 52 includes a bidirectional optical wavelength multiplexer 104 including a transmitter / receiver, a # 5 multiplexer 126 and a # 6 multiplexer 128 including a receiver, and a transmitter #. The 7-multiplexing device 130 and the # 8-multiplexing device 132, and the network management terminal device 134.

Referring to FIGS. 1 and 2, the # 1 multiplexer 54 is opposed to each other via the optical fiber 416, the optical wavelength multiplexer 62, the optical fiber 454, the optical wavelength multiplexer 104 and the optical fiber 482. The # 2 multiplexer 56 is connected to the 5 multiplexer 126, and the # 2 multiplexer 56 opposes via the optical fiber 426, the optical wavelength multiplexer 62, the optical fiber 454, the optical wavelength multiplexer 104 and the optical fiber 484. Connected to device 128.
Similarly, the # 7 multiplexer 130 is connected to the opposing # 3 multiplexer 58 via the optical fiber 486, the optical wavelength multiplexer 104, the optical fiber 454, the optical wavelength multiplexer 62, and the optical fiber 430. The # 8 multiplexer 132 is connected to the opposing # 4 multiplexer 60 via the optical fiber 488, the optical wavelength multiplexer 104, the optical fiber 454, the optical wavelength multiplexer 62, and the optical fiber 440.

In the optical transmission system of FIGS. 1 and 2, the # 1 multiplexer 54 of the terminal station 50 is the ID number value data "1" of the own device 54 which is the connection source and the connection destination of this device 54. 5 to form the ID number value data "5" of the multiplexing device 126, and
The 2 multiplexer 56 forms the ID number value data "2" of the own device 56 which is the connection source and the ID number value data "6" of the # 6 multiplexer 128 which is the connection destination of this device 56, and these are formed. did
The ID number value data is sent to the network management terminal device 86 of the terminal station 50 through the optical wavelength multiplexer 62 of the terminal station 50. The network management terminal device 86 displays, based on the sent ID number value data, which multiplexing device of each multiplexing device of its own station 50 is connected to another station (terminal station 52 in this example). As a result, the administrator of the terminal station 50 can know to which multiplexer of the other station 52 each multiplexer of the own station 50 is connected, and can manage the connection relationship between them.

The ID number value data formed by the # 1 multiplexer 54 is sent to the optical wavelength multiplexer 62 by the main signal light formed by the own device 54, and similarly the # 2 multiplexer 56 is formed. The above ID number value data is also sent to the optical wavelength multiplexing device 62 by the main signal light formed by the device 56 itself. Optical wavelength multiplexer 62
Wavelength-multiplexes each of the transmitted main signal lights. The optical wavelength division multiplexer 62 is further provided with this wavelength-multiplexed optical signal and its own device.
A terminal station 52 wavelength-multiplexes the supervisory channel signal light formed in 62
To the optical wavelength division multiplexer 104. In this case, the data transferred by the supervisory channel signal light is the ID number value data formed by the # 1 and # 2 multiplexers 54 and 56.

The optical wavelength division multiplexer 104 sends the ID number value data transferred by the supervisory channel signal light to the network management terminal device 134 of its own station 52. The network management terminal device 134 determines its own station based on the sent ID number value data.
It indicates which multiplexer of each of the multiplexers 52 is connected to the other station 50. As a result, the administrator of the terminal station 52 can know to which multiplexer of the other station 50 each multiplexer of the own station 52 is connected, and can manage the connection relationship.

Further, the optical wavelength multiplexer 104 transmits the main signal light formed by the # 1 multiplexer 54 to the # 5 multiplexer 12 of the terminal station 52.
6 and the main signal light formed by the # 2 multiplexer 56 is sent to the # 6 multiplexer 128 of the terminal station 52. Multiplexer 12
6 is the same as the ID number value data of the connection source sent by the main signal light, and the ID number value data of the connection destination is replaced with the ID number value data "5" of the own device 126 and the optical wavelength Similarly, the multiplexer 128 sends the ID number value data which is the connection source sent to the multiplexer 104 to the multiplexer 128, and the ID number value data which is the connection destination is the same as the own device 128. ID number value data of "6"
To the optical wavelength division multiplexer 104.

The optical wavelength division multiplexer 104 transmits the ID number value data of the connection source device 54 sent by the supervisory channel signal light and the connection source ID number value data sent from the multiplexing device 126 as it is. And the ID number value data, which is the connection destination of the device 54 sent by the supervisory channel signal light, and the ID number value data "5" of the own device 126 by the replacement sent from the multiplexing device 126. Are compared with each other, and if both of them match, the matching data is sent to the network management terminal device 134.

The optical wavelength division multiplexer 104 also receives the ID number value data of the device 56 which is the connection source sent by the supervisory channel signal light and the ID number which is the connection source sent from the multiplexer 128 as it is. It is the connection destination of the device 56 sent by the supervisory channel signal light while comparing with the value data.
The ID number value data is compared with the ID number value data "6" of the own device 128 sent from the multiplexing device 128 by replacement, and if both of them are matched by these comparisons, the matching data is determined. For example, the mismatch data is sent to the network management terminal device 134.

The network management terminal device 134 displays that the data is normally connected if the sent data is the matching data, and that the data is normally connected if the data is not the matching data. Is displayed. The administrator of the terminal station 52 changes the connection so as to establish a normal connection when a message indicating that the connection is illegal is always displayed. The operation from the terminal station 52 to the terminal station 50 is basically the same as the operation from the terminal station 50 to the terminal station 52 described above, and thus the description thereof is omitted.

As shown in FIG. 4, the # 1 multiplexer 54 comprises a multiplexer circuit 88, an overhead insertion circuit 90, an electrical / optical conversion circuit 92, and a connection destination information byte generation circuit 94, of which overhead insertion is performed. Circuit 90, electrical / optical conversion circuit 92
And the connection destination information byte generation circuit 94 constitutes a transmission circuit.

In this example, the three multiplexed signals 410 to 414 input to the multiplexing circuit 88 are signals having the frame structure of STM-0 recommended by the TTC as mentioned before. The multiplexing circuit 88 multiplexes these signals to form a STM-1 frame structure signal and outputs it to the output 550. Output 550 is
It is connected to the corresponding input of the overhead insertion circuit 90.

In this example, the connection destination information byte generation circuit 94 is a dip switch circuit or a read only memory.
(ROM), which are, in this example, the ID number value "1" of the own device 54 expressed in decimal and the ID number value "5" of the multiplexing device 126 which is the connection destination opposite to the own device 54. "Is generated.

More specifically, the connection destination information byte generation circuit 94 in this example has the ID number value "1" of its own device 54 shown in FIG. 6 (a) and the ID number value "5" of the multiplexing device 126 which is the connection destination. Generates a signal represented by the decimal number "". In this example, the ID number value data expressed in decimal number is stored in the ROM and the ID number value data expressed in decimal number is set in the DIP switch circuit. However, it is expressed in binary number in the ROM. It is also possible to store the ID number value data to be stored and set the ID number value data represented by a binary number in the DIP switch circuit.

A signal line for sending a signal from the connection destination information byte generation circuit 94 to the connection destination information detection circuit 68 of the optical wavelength division multiplexer 62.
418 is composed of a plurality of signal lines in this example.
The connection destination information byte generation circuit 94 forms a frame signal to which a predetermined frame synchronization signal is added before the generated decimal ID number value data, and outputs the frame signal to a predetermined signal line in the signal line 418. A clock signal synchronized with the decimal ID number value data and the frame synchronization signal is output to a signal line in the signal line 418 which is different from the predetermined signal line. The connection destination information byte generation circuit 94 also outputs the decimal ID number value data to the signal line 418 connected to the overhead insertion circuit 90.

In this example, the connection destination information byte generation circuit 94 outputs two kinds of signals, that is, a frame structure signal in which decimal ID number data is added to the frame synchronization signal and a clock signal synchronized with this signal. Although the signal is sent to the connection destination information detection circuit 68 by another signal line, it may be sent to the connection destination information detection circuit 68 by using the overhead access function (Recommendation G.783).

In this example, the connection destination information byte generation circuit 94 outputs the 1-byte data shown in FIG. 6 (a) to the output 418 at the timing of the F1 byte in RSOH. The output 418 is connected to the corresponding input of the overhead insertion circuit 90. In this example, the connection destination information byte generation circuit 94 sends the predetermined data in synchronization with the timing of the F1 byte, but if the overhead access function described above is used, only the predetermined data needs to be sent.

As mentioned above, the signal sent from the multiplexing circuit 88 to the overhead insertion circuit 90 is the STM-1 frame signal having the structure shown in FIG. 17, and the frame signal is the transmission line management information area. (Section overhead:
SOH) and a main information area (payload) that contains multiplexed information.

Specifically, the STM-1 frame signal in which the F1 byte is unused is sent from the multiplexing circuit 88 to the overhead insertion circuit 90. Also, in synchronization with the timing of the F1 byte from the multiplexing circuit 88, the connection destination information byte generation circuit 94 sends the 1-byte data shown in FIG. 6A to the overhead insertion circuit 90. As a result, the output of the overhead insertion circuit 90
The 552 outputs the STM-1 frame signal in which the ID number value data expressed in decimal is multiplexed at the position of the F1 byte. The output 552 is connected to the input of the electro-optical conversion circuit 92.

The electrical / optical conversion circuit 92 of the multiplexer 54 is composed of a semiconductor laser having a wavelength value of λ1 and its drive circuit, and a signal (serial logic data) input from the input 552.
Is sent to a semiconductor laser via a drive circuit, the sent logical data is converted into a light intensity signal, and the optical fiber 416
Output to. The output 416 is connected to the corresponding input of the bidirectional optical WDM amplifier circuit 64 of the optical wavelength multiplexer 62.

# 2 The multiplexer 56 will be described.
The circuit configuration of the 2-multiplexer 56 is basically the # 1 multiplexer.
The circuit configuration is the same as that of 54 (see FIG. 4). The different points will be described below.

First, the input / output relationship will be described. The inputs 410 to 414 of the multiplexer 54 are multiplexers.
At 56 the inputs 420-424 and at the output 416 of the multiplexer 54.
And the equivalent of output 418 is output in multiplexer 56
426 and 428. Output 426 is an optical WDM amplifier circuit
The output 428 is connected to 64 corresponding inputs, and the output 428 is connected to the corresponding input of the connection destination information detection circuit 68.

Explaining the difference in the contents of the signals, the connection destination information byte generation circuit 94 of the multiplexing device 56 is, in this example, the ID number value "2" of its own device 56 expressed by a decimal number and its own device. The ID number value "6" of the # 6 multiplexer 128 which is the connection destination of 56 is generated. The semiconductor laser of the electrical / optical conversion circuit 92 of the multiplexer 56 outputs an optical signal having a wavelength value of λ2.

As shown in FIG. 5, the # 3 multiplexer 58 includes an optical / electrical conversion circuit 96, an overhead detection circuit 98, and a separation circuit.
100 and connection destination information byte detection circuit 102,
Optical / electrical conversion circuit 96, overhead detection circuit
98 and the connection destination information byte detecting circuit 102 constitute a receiving circuit.

The input 430 of the optical / electrical conversion circuit 96 is connected to the corresponding output of the optical wavelength multiplex amplification circuit 64, and the high-speed optical signal input to this input 430 is multiplexed by the # 7 multiplexer which faces the multiplexer 58. In the F1 byte in the RSOH from the device 130, the multiplexed wavelength value of the ID number value data "7" of the device 130 consisting of a decimal number and the ID number value data "3" of the own device 58 which is the connection destination is λ3. Is a signal with the STM-1 frame structure of.

The optical / electrical conversion circuit 96 is composed of a light receiving element and an amplifier, receives a light intensity signal input from the optical fiber 430 and converts it into an electric signal, and the converted electric signal is converted to a predetermined level by the amplifier. It is a photoelectric conversion circuit that amplifies and outputs to output 554. The output 554 outputs serial logic data (high-speed signal) having the STM-1 frame structure. The output 554 is connected to the input of the overhead detection circuit 98.

The overhead detection circuit 98 outputs the signal input from the input 554 to the output 556 as it is, and the ID number value data "7" which is a decimal number multiplexed in the F1 byte included in the signal input from the input 554. And "3" are detected and output to output 558. The output 556 is connected to the input of the separation circuit 100, and the output 558 is connected information byte detection circuit 10
Connected to 2 inputs.

In this example, the overhead detection circuit 98
Although the ID number value data is detected in synchronization with the timing of the F1 byte, the ID number value data may be detected using the overhead access function described above.

The signal line 438 for transmitting a signal from the connection destination information byte detection circuit 102 to the connection destination information comparison circuit 78 of the optical wavelength division multiplexer 62 is composed of a plurality of signal lines in this example. The connection destination information byte detection circuit 102 receives the ID number value data indicating the connection source and the connection destination from the input 558.
102 has a function of replacing the data at the received ID number value data position indicating the connection destination with the ID number value data of its own device.

In detail, the detection circuit 102 in this example, if connected normally, receives the decimal ID from the input 558.
The number value data "7" and "3" are input. Of these, "3" indicating the connection destination is replaced with the ID number value data "3" of the own device. In the case of an abnormal connection, for example, the output 430 of the optical WDM amplifier circuit 64 is connected to the optical fiber 440 and the output 440 is connected to the optical fiber 430, the decimal ID number value data is input from the input 558. Although "8" and "4" are input, replace "4", which indicates the connection destination, with the ID number value data "3" of the local device.

Therefore, if the connection is normal,
Connected information byte detection circuit 102 inputs from input 558
A frame signal to which a predetermined frame synchronization signal is added before the decimal ID number value data "7" and the replaced "3" is formed and output to a predetermined signal line in the signal line 438.
The decimal number ID number value data "7" and "3" and the clock signal synchronized with the frame synchronization signal are output to the signal line 438 which is different from the predetermined signal line.

In this example, the connection destination information byte detection circuit 102 outputs two types of signals, a frame structure signal in which the decimal ID number data is added to the frame synchronization signal and a clock signal synchronized with this signal. Although it was sent to the connection destination information comparison circuit 78 by another signal line, decimal number ID number value data using the overhead access function, frame pulse (FP) indicating the position of F1 byte in F1 byte, and these ID numbers A method may be used in which three types of signals, that is, the value data and the clock signal synchronized with the frame pulse, are sent to the connection destination information comparison circuit 78 through separate signal lines.

The separation circuit 100 receives the STM- input from the input 556.
In this example, the signal of the frame structure of 1 is 3 separated signals
It is a circuit that separates into 432-436.

# 4 The multiplexer 60 will be described below.
The circuit configuration of the 4 multiplexer 60 is basically a # 3 multiplexer.
It is the same as the circuit configuration of 58 (see FIG. 5). The different points will be described below.

First, the input / output relationship will be described. The input 430 of the multiplexer 58 is the input 440 of the multiplexer 60, and the outputs 432 to 436 of the multiplexer 58 are the multiplexers. At 60, the outputs are 442-446, and what corresponds to the output 438 of the multiplexer 58 is the output 448 at the multiplexer 60. The input 440 is connected to the corresponding output of the optical WDM amplifier circuit 64, and the output 448 is connected to the corresponding input of the connection destination information comparing circuit 78.

Next, the difference in the contents of the signals when normally connected will be described. The high-speed optical signal input to the input 440 is the # 8 multiplexer 132 facing the multiplexer 60.
In the F1 byte in RSOH from
The ID number value data "8" and the ID number value data "4" of the device 60 as the connection destination are signals having the STM-1 frame structure in which the multiplexed wavelength value is λ4. A frame signal to which a predetermined frame synchronizing signal is added before the decimal ID number value data "8" input from the input 558 and the replaced "4" is output to a predetermined signal line in the signal line 448. Also, for signal lines different from the above specified signal lines in the signal line 448, this 10
The ID number value data "8" and "4" of the base number and the clock signal synchronized with the frame synchronization signal are output.

Referring to FIG. 1, a bidirectional optical wavelength multiplexing device 62 includes a bidirectional optical wavelength multiplexing amplifier circuit 64, a bidirectional optical demultiplexing circuit 66, connection destination information detection circuits 68 and 84, and a supervisory control signal generation circuit. 70, an electric / optical conversion circuit 72, a supervisory control IF circuit 76, a connection destination information comparison circuit 78, an optical / electrical conversion circuit 80, and a supervisory control signal detection circuit 82.

The bidirectional optical WDM amplifier circuit 64 is an optical multiplexer,
It is composed of an optical demultiplexer, first and second optical amplifiers, an optical multiplexer / demultiplexer, and the like. The first optical amplifier amplifies the optical signal from the input 416, 426 side to the output 450 side and outputs it, and the second optical amplifier amplifies the optical signal from the input 450 side to the output 430, 440 side and outputs it. To do.

The optical multiplexer multiplexes the high speed optical signals having the wavelength values λ1 and λ2 inputted from the inputs 416 and 426 and outputs them to the first optical amplifier. The first optical amplifier amplifies the multiplexed optical signal having the wavelength values λ1 and λ2 to a predetermined level and sends it to the optical multiplexer / demultiplexer. The optical multiplexer / demultiplexer inputs / outputs the multiplexed optical signal of the wavelength values λ1 and λ2 from the first optical amplifier 45.
Output to 0.

Further, this optical multiplexer / demultiplexer outputs a second multiplexed optical signal having wavelength values λ3 and λ4 input from the input / output 450.
Send to the optical amplifier. The second optical amplifier amplifies the multiplexed optical signal having the wavelength values λ3 and λ4 to a predetermined level and outputs it to the optical demultiplexer. The optical demultiplexer demultiplexes the multiplexed optical signals of the wavelength values λ3 and λ4 from the second optical amplifier for each wavelength value, and outputs the demultiplexed optical signal of the wavelength value λ3 to the output 430, The demultiplexed optical signal having the wavelength value λ4 is output to the output 440. The input / output 450 is the input / output 450 of the bidirectional optical demultiplexing circuit 66.
Output 430 is connected to the input of multiplexer 58 and output 440 is connected to the input of multiplexer 60.

The bidirectional optical demultiplexing circuit 66 combines the main signal light having the wavelength values λ1 and λ2 input from the input / output 450 and the supervisory channel signal light having the wavelength value λs1 input from the input 452. And outputs it to the input / output 454. The input / output 454 inputs the signal light obtained by combining the main signal light with the wavelength values λ3 and λ4 and the supervisory channel signal light with the wavelength value λs2. An optical multiplexer / demultiplexer that demultiplexes the main signal light of wavelength values λ3 and λ4 and outputs it to the input / output 450, and demultiplexes the monitoring channel signal light of the wavelength value λs2 of the input signal light and outputs it to the output 456. Is.

The input 452 is connected to the output of the electrical / optical conversion circuit 72, the input / output 454 is connected to the input / output 454 of the bidirectional optical demultiplexing circuit 106 of the optical wavelength multiplexer 104, and the output 456 is optical / electrical. It is connected to the input of the conversion circuit 80.

The connection destination information detection circuit 68 receives inputs 418 and 42.
# 1 multiplexer 54 and # 2 multiplexer input from 8
The ID number value data including "1" and "5" and the ID number value data including "2" and "6" output from 56 are respectively detected, and these detected ID number value data are output to 458. Output. The output 458 is connected to the input of the supervisory control signal generation circuit 70.

The supervisory control signal generating circuit 70 is a circuit for generating a frame-structured signal that carries information in the supervisory channel. In this example, a signal having a frame structure conforming to RSOH transferred by the main signal light is generated, as was mentioned earlier. The signal of this frame structure consists of at least a predetermined frame synchronization byte, and then E1 byte, D1 to D3 byte (DCC: Data Communication Channel) of RSOH, and one or more bytes according to F1 byte, E1 byte, D1
Bytes, F1L bytes or E1 to En bytes, D1 to Dn bytes, F1L to FnL bytes, and one or more bytes for transferring the monitoring channel communication status and the like.

The supervisory control signal generation circuit 70 inputs the ID number value data including "1" and "5" input from the input 458 and "2".
ID number value data including "6" and "2", a total of 2 bytes of ID number value data is multiplexed at the position of F1L to F2L bytes.
Form the frame structure signal for the multiplexed supervisory channel of byte ID number value data and output at outputs 460 and 462. The output 460 is connected to the input of the electro-optical conversion circuit 72, and the output 462 is connected to the corresponding input of the supervisory control IF circuit 76.

The electric / optical conversion circuit 72 is composed of a semiconductor laser having a wavelength value of λs1 and its drive circuit, and sends a signal (serial logic data) input from the input 460 to the semiconductor laser via the drive circuit. The received logical data is converted into a light intensity signal and output to the bidirectional optical demultiplexing circuit 66 through the optical fiber 452.

The supervisory control IF circuit 76 has inputs 462, 464 and 47.
This is an interface having a function of transmitting the following information signals input from the 2 through the signal line 474 to the network management terminal device 86. The ID number value data including "1" and "5" from the supervisory control signal generation circuit 70 and "2" and "6" are input to the input 462.
The signal of the frame structure for the supervisory channel in which the ID number value data including and is multiplexed at the positions of the F1L to F2L bytes is sent. A signal as a result of the comparison is sent from the connection destination information comparison circuit 78, which will be described later, to the input 464. To the input 472, from the supervisory control signal detection circuit 82, the ID number value data including "7" and "3" and "8" and "4" which are multiplexed at the positions of F1L to F2L bytes in this example are input. ID number value data including is sent.

The connection destination information comparison circuit 78 receives the input 438 out of the signal input from the input 438 and the signal input from the input 466.
The signal input from the input is compared with the corresponding signal and the resulting signal is output to output 464, and the signal input from input 448 and input 448 of the signals input from input 466.
The signal input from is compared with the corresponding signal and the resulting signal is output at output 464.

More specifically, when the connection is normally made, the input 438 has ID number value data including "7" and "3", and the input 448 has "8" and "4". The input ID number value data including "7" and "3" and the ID number value data including "8" and "4" are input to the input 466, respectively. In the comparison circuit 78, input from input 438 "7", "
Input "3" and "7" and "3" input from input 466 are compared and input
Input from 448 "8", "4" and input from 466 "8", "
4 "is compared. In this case, output 464 outputs a signal indicating a normal connection.

As described above, the optical wavelength multiplexing amplifier circuit
In the case of an unhealthy connection, such as 64 outputs 430 connected to fiber 440 and output 440 connected to fiber 430, input 438 contains an ID number value containing "8" and "3". ID number value data containing data "7" and "4" on input 448 and ID containing "7" and "3" on input 466
ID number value data and ID number value data including "8" and "4" are input respectively. In the comparator circuit 78, "8" and "3" input from the input 438 are compared with "7" and "3" input from the input 466, and "7" and "4" input from the input 448 are input from the input 466. The entered "8" and "4" are compared. In this case, the output 464 outputs a signal indicating that the connection is not normal.

In addition, regarding the above-described comparison method, in this example, the data of the connection sources may be compared first, and then the data replaced with the connection destination data may be compared. In this case, if the data of the connection sources match and the data replaced with the connection destination data match, it indicates that the system is normally connected. Further, if the data of the connection sources do not match and the data replaced with the connection destination data match or do not match, it indicates that the system is not normally connected.

In this example, when the signal indicating that the optical fiber is not normally connected is output, the output of the optical wavelength multiplexing amplifier circuit 64 and the optical fiber connected to it are controlled so that the administrator or the like can operate normally. Although it is a manual connection switching method for changing the connection, an optical matrix switch as shown in FIG.
136 is a multiplexer 54, 56, 58, 60 and an optical wavelength multiplex amplifier circuit 64
And a control signal 464 indicating whether or not the optical fiber is properly connected to the optical fiber, the output of the optical wavelength multiplex amplifier circuit 64 and the optical fiber connected thereto are automatically switched. An automatic connection switching method may be used.

The optical / electrical conversion circuit 80 is composed of a light receiving element and an amplifier, and the wavelength value input from the optical fiber 456 is λs2.
The light intensity signal of is received and converted into an electric signal, and the converted electric signal is amplified to a predetermined level by an amplifier and output.
It is a photoelectric conversion circuit that outputs to the 468. This input 456 is multiplexed with ID number value data containing "7" and "3" and ID number value data containing "8" and "4" at positions F1L to F2L in this example. A signal having a frame structure for the supervisory channel is input. Output 468 is supervisory control signal detection circuit 82
Connected to the input of.

The supervisory control signal detection circuit 82 receives the ID number value data including "7" and "3" multiplexed at the position of the F1L byte input from the input 468 and the multiplexed data at the position of the F2L byte. Detects and outputs the frame structure signal for the supervisory channel having ID number value data containing 8 "and" 4 "
Output to 472. The output 470 is connected to the input of the connection destination information detection circuit 84, and the output 472 is connected to the input of the supervisory control IF circuit 76.

The connection destination information detection circuit 84 inputs the ID number value data including "7" and "3" multiplexed at the position of the F1L byte input from the input 468 and the multiplexed data at the position of the F2L byte. ID number value data including 8 "and" 4 "are detected respectively, and these detected ID number value data are output to output 466. The output 466 is connected to the input of the connection destination information comparison circuit 78.

When the network management terminal device 86 is normally connected, the ID number value data including "1" and "5" input from the input 474 and "2" and "6" are input in this example.
Including ID number value data including and, signal data indicating a normal connection according to the result of comparison, including "7" and "3"
Convert the ID number value data and the ID number value data including "8" and "4" into a signal in a format that can be displayed and display it on the monitor.

In the case of an abnormal connection such that the output 430 of the optical wavelength multiplexing amplifier circuit 64 is connected to the optical fiber 440 and the output 440 is connected to the optical fiber 430, the input is made from the input 474 in this example. ID number value data including "1" and "5" and ID number value data including "2" and "6", signal data indicating that the connection is not normally established as a result of comparison, and "7" ID number value data including "3" and "8"
Convert the ID number value data including "and" to "4" and display it on the monitor.

If it is displayed that the connection is not normal, the output 430 of the optical wavelength multiplex amplification circuit 64 should be connected to the optical fiber 430, and the output 440 should be connected to the optical fiber 440. You can just use it. In this way, the terminal station 50 can know the connection state of this system and can manage it appropriately.

Referring to FIG. 2, the bidirectional optical wavelength division multiplexer 104 includes a bidirectional optical demultiplexing circuit 106, a bidirectional optical wavelength division multiplexing amplifier circuit 108, an optical / electrical conversion circuit 110, and a supervisory control signal detection circuit.
112, a supervisory control IF circuit 114, connection destination information detection circuits 116 and 120, a connection destination information comparison circuit 118, a supervisory control signal generation circuit 122 and an electric / optical conversion circuit 124.

The circuit configuration of the bidirectional optical demultiplexing circuit 106 is basically the same as that of the optical demultiplexing circuit 66. The optical demultiplexing circuit 106 has wavelength values λ3 and λ4 input from the input / output 476.
Of the main signal light having the wavelength value λs2 input from the input 480, and output to the input / output 454, and the main signal light having the wavelength values λ1 and λ2 is input from the input / output 454. The signal light that is multiplexed with the supervisory channel signal light of wavelength value λs1 is input, and the main signal light of wavelength values λ1 and λ2 of this input signal light is demultiplexed and output to the input / output 476. It is an optical multiplexer / demultiplexer that demultiplexes the monitoring channel signal light having the wavelength value λs1 from the signal light and outputs it to the output 478.

The input 480 is connected to the output of the electrical / optical conversion circuit 124, the input / output 476 is connected to the input / output 476 of the optical wavelength multiplex amplification circuit 108, and the output 478 is the optical / electrical conversion circuit 11.
Connected to 0 input.

The circuit configuration of the optical wavelength multiplex amplifier circuit 108 is basically the same as that of the optical wavelength multiplex amplifier circuit 64. The optical multiplexer of the optical wavelength multiplex amplifier circuit 108 combines the high-speed optical signals of the wavelength values λ3 and λ4 input from the inputs 486 and 488 and combines them into the second optical signal.
Send to the optical amplifier. The second optical amplifier amplifies the multiplexed optical signal having the wavelength values λ3 and λ4 to a predetermined level and sends it to the optical multiplexer / demultiplexer. The optical multiplexer / demultiplexer outputs the multiplexed optical signal of the wavelength values λ3 and λ4 from the second optical amplifier to the input / output 476.

The optical multiplexer / demultiplexer also sends the multiplexed optical signal having the wavelength values λ1 and λ2 input from the input / output 476 to the first optical amplifier. The first optical amplifier has wavelength values λ1 and λ2.
The multiplexed optical signal of is amplified to a predetermined level and sent to the optical demultiplexer. The optical demultiplexer uses the wavelength value λ1 from the first optical amplifier.
And demultiplexing the multiplexed optical signal of λ2 for each wavelength value, and outputting the demultiplexed optical signal of wavelength value λ1 to output 482,
The demultiplexed optical signal having the wavelength value λ2 is output to the output 484. Input 486 is the output of the # 7 multiplexer 130 and input 488 is # 8.
The output of the multiplexer 132 and the output 482 are the # 5 multiplexer 12
Input 6 and output 484 are connected to the input of the # 6 multiplexer 128, respectively.

The optical / electrical conversion circuit 110 receives a light intensity signal having a wavelength value of λs1 input from the optical fiber 478, converts it into an electric signal, and amplifies the converted electric signal to a predetermined level by an amplifier. Output to output 490. In this example,
Input 478 is an ID that contains "1" and "5" in the F1L byte position
The signal of the frame structure for the supervisory channel in which the number value data and the ID number value data including "2" and "6" at the position of the F2L byte is multiplexed is input. The output 490 is connected to the input of the supervisory control signal detection circuit 112.

The supervisory control signal detection circuit 112 includes ID number value data including "1" and "5" at the F1L byte position input from the input 490 and "2" and "6" at the F2L byte position.
The signal of the frame structure for the supervisory channel in which the ID number value data is multiplexed is detected and output to the outputs 492 and 494. Output 492 is connected to the input of supervisory control IF circuit 114, and output 49
4 is connected to the input of the connection destination information detection circuit 116.

The supervisory control IF circuit 114 has an input 492 in this example.
Result of comparison from ID information value data including "1" and "5" and ID number value data including "2" and "6" input from the connection destination information comparison circuit 118 input from the input 502 ID containing the signal from and the "7" and "3" from input 516
The network management terminal device 134 receives the number value data and the ID number value data including "8" and "4" through the signal line 506.
Send to.

In this example, the connection destination information detection circuit 116 is multiplexed at the position of the F1L byte input from the input 494.
The ID number value data including 1 "and" 5 "and the ID number value data including" 2 "and" 6 "multiplexed at the position of F2L byte are detected respectively, and these detected ID number value data are detected. Output to output 496. Output 496 is connected information comparison circuit 118
Connected to the input of.

The connection destination information comparison circuit 118 inputs "1", "5" from the input 500 in this example when normally connected.
Is compared with "1", "5" input from input 496 and input 4
Input from 98 "2", "6" and input from 496 "2", "
6 "is compared. In this case, the output 502 outputs a signal indicating a normal connection.

In this example, when the signal indicating that the optical fiber is not normally connected is output, the output of the optical wavelength multiplex amplification circuit 108 and the connection of the optical fiber connected to the optical fiber are connected so that the administrator can operate normally. Although it is a manual connection switching method for switching, an optical matrix switch as shown in FIG.
138 is provided between the multiplexers 126, 128, 130, 132 and the optical WDM amplifier circuit 108, and the control signal 502 indicating whether or not the optical fiber is normally connected to the multiplexer 138 is supplied, whereby the optical signal is automatically transmitted. An automatic connection switching method may be used in which the output of the wavelength division multiplexing amplifier circuit 108 and the optical fiber connected thereto are switched.

Further, the output 482 of the optical wavelength multiplex amplification circuit 108
Are connected to optical fiber 484 and output 484 is optical fiber 48
Input in case of abnormal connection such as connection with 2
500 has ID number value data including "2" and "5",
Input 498 contains ID number value data containing "1" and "6", and input 496 contains ID number value data containing "1" and "5" and "2" and "6". ID number value data including each is input. In the comparator circuit 78, "2" and "5" input from the input 500 are compared with "1" and "5" input from the input 496, and the input 498 is compared.
Input from "1", "6" and input from 496 "2", "6"
And are compared. In this case, the output 502 outputs a signal indicating that the connection is not normal.

The connection destination information detection circuit 120 inputs in this example.
Includes "7" and "3" output from # 7 multiplexer 130 and # 8 multiplexer 132 input from 510 and 508
The ID number value data and the ID number value data including "8" and "4" are respectively detected, and these detected ID number value data are output to the output 512. Output 512 is the supervisory control signal generation circuit
Connected to 122 inputs.

In this example, the supervisory control signal generation circuit 122 receives the ID number value data including “7” and “3” input from the input 512 and the ID number value data including “8” and “4” in the F1L byte. And F1L bytes to form a frame-structured signal for the supervisory channel and output at outputs 514 and 516. The output 514 is connected to the input of the electro-optical conversion circuit 124, and the output 516 is connected to the corresponding input of the supervisory control IF circuit 114.

The electrical / optical conversion circuit 124 is, in this example, an input
A signal (serial logic data) input from the 514 is sent to a semiconductor laser with a wavelength value of λs2 via a drive circuit, and the sent logic data is converted into a light intensity signal and converted into an optical fiber.
It outputs to the optical demultiplexing circuit 106 through 480.

As shown in FIG. 2, the terminal station 52 has # 5 to # 8 multiplexers 126 to 132.

The # 5 multiplexer 126 will be described below.
The circuit configuration of the # 5 multiplexer 126 is basically the same as the circuit configuration of the # 3 multiplexer 58 (see FIG. 5). The different points will be described below.

First, regarding the input / output relationship, the input 430 of the multiplexer 58 is the input 482 of the multiplexer 126, and the outputs 432 to 436 of the multiplexer 58 are the multiplexers. At 126, the outputs are 518-522, and what corresponds to the output 438 of the multiplexer 58 is 500 at the multiplexer 126. The input 482 is connected to the corresponding output of the optical WDM amplifier circuit 108, and the output 500 is connected to the corresponding input of the connection destination information comparing circuit 118.

Next, the difference in the contents of the signals when normally connected will be described. The high-speed optical signal input to the input 482 is the F1 in the RSOH from the opposing # 1 multiplexer 54.
A signal having the STM-1 frame structure with the multiplexed wavelength value λ1 of the ID number value data "1" of the device 54 and the ID number value data "5" of the device 126 which is the connection destination, which consists of decimal numbers in bytes. is there. To the predetermined signal line in the signal line 500, the decimal number ID number value data "1" input from the input 558 and the frame signal to which the predetermined frame synchronization signal is added before the replaced "5" are output, Further, the decimal number ID number value data "1" and "5" and the clock signal synchronized with the frame synchronization signal are output to the signal line different from the above-mentioned predetermined signal line in the signal line 500.

The # 6 multiplexer 128 will be described below.
The circuit configuration of the # 6 multiplexer 128 is basically the same as the circuit configuration of the # 3 multiplexer 58 (see FIG. 5). The different points will be described below.

First, the input / output relationship will be described. The input 430 of the multiplexer 58 is the input 484 of the multiplexer 128, and the outputs 432 to 436 of the multiplexer 58 are the multiplexers. At 128, there are outputs 524-528, and the equivalent of output 438 of multiplexer 58 is output 498 at multiplexer 128. The input 484 is connected to the corresponding output of the optical WDM amplifier circuit 108, and the output 498 is connected to the corresponding input of the connection destination information comparing circuit 118.

Next, the difference in the contents of the signals when normally connected will be explained. The high-speed optical signal input to the input 484 is the F1 in the RSOH from the corresponding # 2 multiplexer 56.
A signal having the STM-1 frame structure with the multiplexed wavelength value λ2 of the ID number value data "2" of the device 56 and the ID number value data "6" of the device 128 that is the connection destination, which consists of decimal numbers in bytes. is there. To the predetermined signal line in the signal line 498, the decimal ID number data “2” input from the input 558 and the frame signal to which the predetermined frame synchronization signal is added before the replaced “6” are output, Further, the decimal number ID number value data "2" and "6" and a clock signal synchronized with the frame synchronization signal are output to a signal line different from the above-mentioned predetermined signal line in the signal line 498.

The # 7 multiplexer 130 will be described below.
The circuit configuration of the # 7 multiplexer 130 is basically the same as the circuit configuration of the # 1 multiplexer 54 (see FIG. 4). The different points will be described below.

First, the input / output relationship will be described. The inputs 410 to 414 of the multiplexer 54 are multiplexers.
Inputs 530-534 at 130 and output 41 of multiplexer 54
Corresponding to 6 and output 418 are outputs 486 and 510 in multiplexer 130. The output 486 is connected to the corresponding input of the optical wavelength multiplexing amplifier circuit 108, and the output 510 is connected to the corresponding input of the connection destination information detection circuit 120.

Explaining the difference in the contents of the signals, the connection destination information byte generation circuit 94 of the multiplexing device 130 is, in this example, the ID number value of its own device 130 expressed in decimal.
7 "and the # 3 multiplexer 58 to which the own device 130 is connected
ID number value of "3" is generated. The semiconductor laser of the electrical / optical conversion circuit 92 of the multiplexer 130 outputs an optical signal having a wavelength value of λ3.

Explaining the # 8 multiplexer 132,
The circuit configuration of the # 8 multiplexer 132 is basically the same as that of the # 1 multiplexer 54 (see FIG. 4). The different points will be described below.

First, the input / output relationship will be described. The inputs 410 to 414 of the multiplexer 54 are multiplexers.
Inputs 536 to 540 for 132 and output 41 for multiplexer 54
Corresponding to 6 and output 418 are outputs 488 and 508 in multiplexer 132. The output 488 is connected to the corresponding input of the optical wavelength multiplex amplifier circuit 108, and the output 508 is connected to the corresponding input of the connection destination information detection circuit 120.

Explaining the difference in the contents of the signals, the connection destination information byte generating circuit 94 of the multiplexing device 132 is, in this example, the ID number value of its own device 132 expressed in decimal.
8 "and # 4 multiplexer 60 which is the connection destination of own device 132
Generates an ID number value of "4". The semiconductor laser of the electrical / optical conversion circuit 92 of the multiplexer 132 outputs an optical signal having a wavelength value of λ4.

The terminal station 52 has a network management terminal device 134 as shown in FIG.
If the 134 is successfully connected, enter in this example
ID number value data including "1" and "5" and ID number value data including "2" and "6" input from 506, signal data indicating a normal connection according to the result of comparison, And ID number value data including "7" and "3" and "8" and "4"
The ID number value data including and are converted into a signal of a format that can be displayed and displayed on the monitor.

Further, the output 482 of the optical wavelength multiplex amplification circuit 108
Are connected to optical fiber 484 and output 484 is optical fiber 48
In the case of an unhealthy connection, such as 2 is connected, in this example, the ID number value data including "1" and "5" and the ID including "2" and "6" input from the input 506 in this example. Number value data,
It is possible to display the signal data indicating that the connection is not normally established according to the result of the comparison, the ID number value data including "7" and "3", and the ID number value data including "8" and "4". Convert to a signal of the format and display on the monitor.

When it is displayed that the connection is not normal, the output 482 of the optical wavelength multiplex amplification circuit 108 may be connected to the optical fiber 482, and the output 484 may be connected to the optical fiber 484. You can just use it. In this way, the terminal station 52 can know the connection state of this system and can manage it appropriately.

In this example, the connection destination information detection circuits 68, 1
20 and connection destination information comparison circuits 78, 118 etc.
Since the number of multiplexers is two (the number of wavelengths in one direction is two), the circuit has a two-circuit configuration. For example, when the number of multiplexers is three, a three-circuit configuration is sufficient. The number of circuit configurations corresponding to the number of

In this example, the system configuration is a bidirectional optical WDM transmission system, but it may be a unidirectional optical WDM transmission system. Further, in this example, the system configuration is a bidirectional optical wavelength division multiplex transmission system between the terminal stations, but one relay station having a regenerative intermediate relay apparatus or / and a linear intermediate relay apparatus between the terminal stations is used. There may be a configuration in which there are a plurality.

In this case, the regeneration and linear intermediate repeater comprises an optical demultiplexer for separating the supervisory channel signal light and an optical / electrical converter for converting the supervisory channel signal light separated by the optical demultiplexer into an electric signal. And a byte detection circuit for extracting each byte contained in the electric signal converted by the optical / electrical converter, and an indicator for displaying the information of the F1L and F2L bytes extracted by the byte detection circuit. Therefore, it is possible to monitor the connection information multiplexed in the F1L byte and the F2L byte.

Referring to FIGS. 1 and 2, the terminal station 50 and the terminal station 52 have basically the same configuration, and therefore the operation of the terminal station 50 will be mainly described.

The multiplexing circuit 88 of the # 1 and # 2 multiplexers 54 and 56 multiplexes the three input # 1 to # 3 multiplexed signals (STM-0 frame signals) 410 to 414 and 420 to 424, respectively. Form a high speed signal (STM-1 frame signal) and send it to the overhead insertion circuit 90. # 1 multiplexer 54
The connection destination information byte generation circuit 94 of is its own device consisting of a decimal number.
The ID number value data "1" of 54 and the ID number value data "5" of the # 5 multiplexer 126 which is the connection destination of the own device 54 are generated and sent to the overhead insertion circuit 90, and those ID number value data " 1 "and" 5 "are sent to the connection destination information detection circuit 68 of the optical wavelength multiplexer 62 via the signal line 418. The overhead insertion circuit 90 multiplexes the ID number value data "1" and "5", which are decimal numbers and are sent to the position of the F1 byte of the sent high speed signal, and sends them to the electrical / optical conversion circuit 92. Electrical/
The optical conversion circuit 92 converts the sent high-speed signal which is an electric signal into a high-speed optical signal (wavelength value λ1) and sends it to the optical wavelength multiplex amplifier circuit 64 of the optical wavelength multiplexer 62 via the optical fiber 416.

Similarly, the connection destination information byte generation circuit 94 of the # 2 multiplexer 56 also has the ID number value data "2" of the own device 56, which is a decimal number, and the # 6 multiplex which is the connection destination of the own device 56. The ID number value data "6" of the device 128 is generated and sent to the overhead insertion circuit 90, and the ID number value data "2" is generated.
And "6" are sent to the connection destination information detection circuit 68 of the optical wavelength multiplexer 62 via the signal line 428. Overhead insertion circuit 90
Transmits the ID number value data "2" and "6" consisting of a decimal number sent to the position of F1 byte of the sent high speed signal to the electro-optical conversion circuit 92 after multiplexing. Electric / optical conversion circuit
The reference numeral 92 converts the high-speed signal which is an electric signal sent into a high-speed optical signal (wavelength value λ2) which is an optical signal and sends it to the optical wavelength multiplex amplifier circuit 64 of the optical wavelength multiplexer 62 via the optical fiber 426.

The optical wavelength multiplex amplifier circuit 64 multiplexes and amplifies the high-speed optical signal having the wavelength value λ1 from the optical fiber 416 and the high-speed optical signal having the wavelength value λ2 from the optical fiber 426 to perform the optical demultiplexing circuit 66.
Send to. On the other hand, the connection destination information detection circuit 68 uses the ID number value data “1” and “5” from the signal line 418 and the ID number from the signal line 428.
The number value data "2" and "6" are detected and sent to the supervisory control signal generation circuit 70.
The number value data "1" and "5" are multiplexed at the F1L byte position, and the ID number value data "2" and "6" are multiplexed at the F2L byte position to form the signal of the frame structure for the supervisory channel. To the electric / optical conversion circuit 72 and the monitor control IF circuit 76.

The electrical / optical conversion circuit 72 converts the transmitted electrical signal of the supervisory channel frame structure into the wavelength value λ.
The optical signal is converted into a supervisory channel optical signal of s1 and sent to the optical demultiplexing circuit 66 via the optical fiber 452. The optical demultiplexing circuit 66 multiplexes the high-speed optical signal of the wavelength values λ1 and λ2 from the optical fiber 450 and the supervisory channel optical signal of the wavelength value λs1 from the optical fiber 452, and the terminal station via the optical fiber 454. 52 to the optical demultiplexing circuit 106 of the optical wavelength multiplexer 104.

Further, the optical demultiplexing circuit 66 of the terminal station 50 is
From the optical demultiplexing circuit 106 of 52 to the high-speed optical signal of the wavelength values λ3 and λ4 via the optical fiber 454, the wavelength value λ
An optical signal obtained by multiplexing the optical signal of the monitoring channel of s2 is sent. The optical demultiplexing circuit 66 sends the monitoring channel optical signal of the wavelength value λs2 of the input optical signal to the optical / electrical conversion circuit 80 via the optical fiber 456, and the high-speed optical signals of the wavelength values λ3 and λ4 of the input optical signal are transmitted. The signal is sent to the optical WDM amplifier circuit 64 via the optical fiber 450.

The optical / electrical conversion circuit 80 converts the supervisory channel optical signal having the wavelength value λs2 into an electrical signal and sends it to the supervisory control signal detection circuit 82, which in turn sends the supervisory channel of the sent electrical signal. The frame structure signal is detected and sent to the supervisory control IF circuit 76 and the connection destination information detection circuit 84.
In the detected frame structure signal for the supervisory channel
ID number data values "7" and "3" in the F1L byte position
However, the ID number data values "8" and "4" are multiplexed at the F2L byte position. The connection destination information detection circuit 84 detects the sent F1L byte ID number data values "7" and "3" or the F2L byte ID number data values "8" and "4", respectively, and detects the connection destination information comparison circuit. Send to 78.

The optical wavelength multiplex amplifier circuit 64 amplifies and demultiplexes the multiplexed high-speed optical signal of the wavelength values λ3 and λ4 from the optical fiber 454, and demultiplexes the demultiplexed high-speed optical signal of the optical fiber 430. To the # 3 multiplexer 58 via the optical fiber 440, and the demultiplexed high-speed optical signal having the wavelength value λ4 is transmitted via the optical fiber 440 to the # 4 multiplexer.
Send to multiplexer 60.

The optical / electrical conversion circuit 96 of the # 3 multiplexer 58 converts the input high-speed optical signal (wavelength value λ3) into an electric signal, and sends this converted high-speed signal to the overhead detection circuit 98. The overhead detection circuit 98 receives the ID number value data "7" and "3" (in the case of normal connection) or "8" and "4" (disabled) which are decimal numbers and are multiplexed at the position of the F1 byte of the received high-speed signal. (In the case of normal connection) is detected and sent to the connection destination information byte detection circuit 102 and the received high speed signal is sent to the separation circuit 100. The separation circuit 100 separates the received high-speed signal into three low-speed optical signals (# 1 to # 3 separated signals) 432 to 436 and outputs them. Connection destination information byte detection circuit 10
2 sends the received ID number value data "7" and the replaced "3" or "8" and the replaced "3" to the connection destination information comparison circuit 78 of the optical wavelength multiplexer 62 via the signal line 438.

Similarly, the optical / electrical conversion circuit 96 of the # 4 multiplexer 60 also converts the input high-speed optical signal (wavelength value λ4) into an electric signal, and the converted high-speed signal is sent to the overhead detection circuit 98. send. The overhead detection circuit 98 consists of a decimal number multiplexed at the position of the F1 byte of the received high speed signal.
ID number value data "8" and "4" (in case of normal connection) or "7" and "3" (in case of abnormal connection) are detected and sent to the connection destination information byte detection circuit 102. The signal is sent to the separation circuit 100. The separation circuit 100 converts the received high-speed signal into three low-speed optical signals (# 1 to # 3 separated signals) 442.
Separately output to ~ 446. The connection destination information byte detection circuit 102 receives the received ID number value data “8” and the replaced “4” or “7” and the replaced “4” on the signal line 44.
Connection destination information comparison circuit 78 of the optical wavelength division multiplexer 62 via
Send to.

The connection destination information comparison circuit 78 sends the ID number data values “7” (connection source) and “3” (connection destination) sent from the connection destination information detection circuit 84 and the signal line 438. Incoming ID number value data "7" (connection source) and replaced "3"
(ID number value data of own device) or "8" (connection source) and replaced "3" (ID number value data of own device) are compared, and the ID number data sent from detection circuit 84 Values "8" (source) and "4" (destination) with signal line 448
ID number value data sent via "8" (connection source) and replaced "4" (ID number value data of own device) or "7" (connection source) and replaced "4" (own device) ID number value data) of the above, and the signal data resulting from the comparison is sent to the monitor control IF circuit 76.

In this example, first, the ID number value data of the connection sources are compared with each other, and then the connection destination ID number value data and the ID number value data of the own device by replacement are compared. If the ID number value data of the connection sources match, and the connection destination ID number value data and the ID number value data of the own device after replacement match, the signal data indicating that the connection is normally made When the ID number value data does not match with each other and the connection destination ID number value data and the ID number value data of the own device after the replacement match, signal data indicating that the connection is not normally made is output.

The monitor control IF circuit 76 is a connection destination information comparison circuit.
The signal data from the 78 indicating whether the connection is normal and the F1L byte ID number data values "1" and "5" from the supervisory control signal generation circuit 70 or F2L byte ID number data value "2" And "6" from the supervisory control signal detection circuit 82
F1L byte ID number data value "7" and "3" or F2L
The byte ID number data values "8" and "4" are sent to the network management terminal device 86 via the signal line 474, respectively.

The network management terminal device 86 converts the received data into a signal in a format that can be displayed on the monitor and displays it on the signal. This projection shows that the # 1 multiplexer 54
The 5th multiplexer 126, the # 2 multiplexer 56, the # 6 multiplexer 128, the # 3 multiplexer 58 and the # 7 multiplexer 130,
It is shown that the # 4 multiplexer 60 and the # 8 multiplexer 132 are connected to each other, and the # 3 multiplexer 58 and the # 7 multiplexer 130 are connected to the # 4 multiplexer 60 and the # 8 multiplexer, respectively. 13
2 indicates whether or not they are normally connected.

In this projection, when it is shown that the connection is not normally made, for example, the output 430 of the optical wavelength multiplex amplification circuit 64 is connected to the optical fiber 430, and the output 440 of the optical wavelength multiplex amplification circuit 64 is connected. Should be connected to the optical fiber 440.

As described above, according to the first embodiment, the optical wavelength multiplexer 62 uses the ID number value data "1" of its own device 54 from the # 1 multiplexer 54 and the # 5 multiplexer which is the connection destination. 126 of
ID number value data "5" and own device from # 2 multiplexer 56
The ID number value data "2" of 56 and the ID number value data "6" of the # 6 multiplexer 128 which is the connection destination are sent to the network management terminal device 86. As a result, the network management terminal device 86 displays that the # 1 multiplexer 54 and the # 5 multiplexer 126 are connected and the # 2 multiplexer 56 and the # 6 multiplexer 126 are connected. Therefore, the manager
The connection state from the terminal station to the terminal station 52 can be accurately managed.

As described above, according to the first embodiment, the optical wavelength multiplexer 62 detects the signal of the supervisory channel frame structure transmitted from the optical wavelength multiplexer 104, and detects the detected supervisory channel. Send the ID number data values "7" and "3" at the F1L byte position and the ID number data values "8" and "4" at the F2L byte position in the frame structure signal to the network management terminal device 86. ing. As a result, the network management terminal device 86 displays that the # 3 multiplexer 58 and the # 7 multiplexer 130 are connected, and the # 4 multiplexer 60 and the # 8 multiplexer 132 are connected. Therefore, the administrator can appropriately manage the connection state from the terminal station 52 to the terminal station 50.

As described above, according to the first embodiment, the optical wavelength division multiplexer 62 sends a signal indicating whether or not it is normally connected to the network management terminal device 86. As a result, the network management terminal device 86 causes the # 3 multiplexer 58 and the # 7 multiplexer 130 to be connected and the # 4 multiplexer 60.
And the connection status of the # 8 multiplexer 132 is displayed. Therefore, when it is displayed that the connection status is not normal, the administrator can change the connection so that the connection status becomes normal.

FIG. 9 shows the configuration of the terminal station 142 to which the supervisory controller in the optical wavelength division multiplexing transmission system of the present invention according to the second embodiment is applied, and FIG. 10 shows the terminal station 142 and FIG.
A repeater station 144 consisting of a linear intermediate repeater for repeating the optical signal from the terminal station 146 is shown in FIG. 11, and the supervisory control device in the optical wavelength division multiplexing transmission system of the present invention according to the second embodiment is applied in FIG. The configuration of the terminal station 146 facing the terminal station 142 via the relay station 144 is shown. In this example, FIG. 9 and FIG.
The optical wavelength division multiplexing transmission system shown in FIG. 11 is a bidirectional optical wavelength division multiplexing transmission system.

The terminal station 142 is a # 1 multiplexer including a transmitter.
148, # 2 multiplexer 150, and receiver # 3
A multiplexer 152 and a # 4 multiplexer 154, a bidirectional optical wavelength multiplexer 156 including a transmitting / receiving unit, and a network management terminal device 176, and a relay station 144 is a bidirectional linear intermediate relay device 189. The terminal station 146 includes a bidirectional optical wavelength multiplexer 216 including a transmitter / receiver, a # 5 multiplexer 234 and a # 6 multiplexer 236 including a receiver.
It is composed of a # 7 multiplexer 238 and a # 8 multiplexer 240 which are transmission units, and a network management terminal device 242.

Referring to FIGS. 9-11, the # 1 multiplexer
148 is an optical fiber 576, an optical wavelength multiplexer 156, an optical fiber
608, a linear intermediate repeater 189, an optical fiber 646, an optical wavelength multiplexer 216 and an optical fiber 676 are connected to the opposing # 5 multiplexer 234, and the # 2 multiplexer 150 is an optical fiber 586, an optical wavelength. Multiplexer 156, optical fiber 608, linear intermediate repeater 189, optical fiber 646, optical wavelength multiplexer 216, and # 6 multiplexer 236 facing each other via optical fiber 678.
Connected with. Similarly, the # 7 multiplexer 238 is an optical fiber 680, an optical wavelength multiplexer 216, an optical fiber 646, a linear intermediate repeater 189, an optical fiber 608, an optical wavelength multiplexer 15.
6 and the optical fiber 590 to connect to the opposing # 3 multiplexer 152, and the # 8 multiplexer 240 is connected to the optical fiber 68.
2. The optical wavelength multiplexer 216, the optical fiber 646, the linear intermediate repeater 189, the optical fiber 608, the optical wavelength multiplexer 156 and the optical fiber 598 are connected to the opposing # 4 multiplexer 154.

In the optical transmission system shown in FIGS. 9 to 11, the terminal station 14
The # 1 multiplexer 148 of No. 2 has the ID number value data "1" of its own device 148, which is the source of the signal, as the direction information, and the ID number value data of the # 5 multiplexer 234 facing this device 148. 5 "and wavelength value data λ1 as wavelength value information, and the # 2 multiplexing device 150 uses the ID number value data" 2 "of its own device 150, which is the source of the signal, as direction information. The ID number value data “6” of the # 6 multiplexer 236 facing the device 150 and the wavelength value data λ as the wavelength value information.
2 and the ID number value data and wavelength value data thus formed are sent to the optical wavelength multiplexer 156 of the own station 142.

The optical wavelength multiplexer 156 counts the number of different wavelength values from the transmitted wavelength value data and forms wavelength-multiplexed value data based on the count. The optical wavelength multiplexer 156 sends the sent ID number value data and the formed wavelength multiplex value data to the network management terminal device 176 of its own station 142. Based on the sent ID number value data, the network management terminal device 176 transfers the main signal light to each multiplexing device in each multiplexing device of its own station 142 (in this example, the direction of the other station 146). And the number of wavelength multiplexes is displayed based on the transmitted wavelength multiplex value data. As a result, the terminal 142
The administrator of the station can know in which direction the main signal light is transferred from each multiplexer of the own station 142, know the number of wavelength multiplexes, and manage these. You can

On the other hand, the main signal lights from the # 1 multiplexer 148 and the # 2 multiplexer 150 are sent to the optical wavelength multiplexer 156. The optical wavelength multiplexer 156 wavelength-multiplexes each of the transmitted main signal lights. The optical wavelength multiplexer 156 further wavelength-multiplexes the wavelength-multiplexed optical signal and the supervisory channel signal light formed by the own device 156, and sends the wavelength-multiplexed optical signal to the linear intermediate repeater 189 of the repeater station 144. In this case, the data transferred by the supervisory channel signal light is the above-mentioned ID number value data and wavelength multiplex value data.

The linear intermediate repeater 189 monitors in which direction the main signal light is transferred based on the ID number value data sent by the supervisory channel signal light. Further, the linear intermediate repeater 189 forms a control signal according to the number of wavelength division multiplexing of the wavelength division multiplexing value data sent by the supervisory channel signal light. The linear intermediate repeater 189 amplifies the optical signal in which the two main signal lights and one supervisory channel signal light sent are wavelength-multiplexed to a level corresponding to the control signal, and amplifies the terminal station.
It is sent to the optical wavelength multiplexer 216 of 146. This allows the administrator of the relay station 144 to know in which direction the main signal light is transferred, and to manage this.

The optical wavelength multiplexing device 216 of the terminal station 146 sends the ID number value data and the wavelength multiplexing value data transferred by the supervisory channel signal light to the network management terminal device 242 of its own station 146. Based on the sent ID number value data, the network management terminal device 242 transfers the main signal light from each multiplexing device in which direction (in this example, the direction of the other station 142) to each multiplexing device of its own station 146. The number of wavelength multiplexes is displayed based on the transmitted wavelength multiplex value data. This makes the terminal
The administrator of the 146 can know from which direction the main signal light has been transferred to each multiplexer of the local station 146, and can also determine the number of wavelength division multiplexing of the transferred main signal light. You can know and manage these. Since the operation from the terminal station 146 to the terminal station 142 is basically the same as the operation from the terminal station 142 to the terminal station 146 described above, the description thereof will be omitted.

The # 1 multiplexer 148, as shown in FIG.
Multiplexing circuit 178, electrical / optical conversion circuit 180, wavelength value / direction information generation circuit 182, and wavelength / direction management byte generation circuit 184
The electric / optical conversion circuit 180, the wavelength value / direction information generation circuit 182, and the wavelength / direction management byte generation circuit 184 among them constitute a transmission circuit.

The three multiplexed signals 570 to 574 input to the multiplexing circuit 178 are recommended by the TTC described above in this example.
This signal has the frame structure of STM-0. Multiplexing circuit 17
A circuit 8 multiplexes these signals to form an STM-1 frame structure signal and outputs it to the output 628. The output 628 is connected to the input of the electro-optical conversion circuit 180.

The electrical / optical conversion circuit 180 of the multiplexer 148 is composed of a semiconductor laser having a wavelength value of λ1 and its drive circuit, and a signal (serial logic data) input from the input 628 is sent to the semiconductor laser via the drive circuit. The optical data is sent by converting the received logical data into a light intensity signal.
Output to 576. The output 576 is connected to the corresponding input of the bidirectional optical WDM amplifier circuit 158 of the optical WDM device 156.

In this example, the wavelength value / direction information generation circuit 182 is a dip switch circuit or a read only memory (R
OM) to generate wavelength value / directional information expressed in decimal and output it to output 630. In this example, the wavelength value information is 1530 nm (λ1) as shown in Fig. 15 (a).
6A is generated, and the data of the ID number value “1” of the own device 148 and the ID number value “5” of the multiplexing device 234 facing the own device 148 shown in FIG. To generate.

Taking 1530 nm as an example, in this case,
The ones digit is 0, the tens digit is 3, the hundreds digit is 5, and the thousands digit is 1. In the case of a ROM, 0s in the 1s place are stored as 4-bit data of “0000” and 3s in the tens place are stored as 4-bit data of “0011” in a predetermined address area of the ROM. The 5's digit is stored as 4-bit data of "0101", and the 1's digit of thousands is stored as 4-bit data of "0001". In this case, although not shown, data is read by the read control signal from the wavelength / direction management byte generation circuit 184 and output to the output 630.

In the case of the DIP switch circuit, the switch circuit forming the ones digit outputs 4-bit data of "0000", and the switch circuit forming the tens digit is 4 of "0011".
It is preferable that the switch circuit that outputs the bit data, the switch circuit that constitutes the hundreds place outputs the 4-bit data of "0101", and the switch circuit that configures the thousands place outputs the 4-bit data of "0001". .

In this example, the method of storing the ID number value data and the wavelength value data represented by the decimal number in the ROM and setting the ID number value data and the wavelength value data represented by the decimal number in the DIP switch circuit. However, it is also possible to store the ID number value data and the wavelength value data expressed in binary numbers in the ROM and set the ID number value data and the wavelength value data expressed in binary numbers in the DIP switch circuit.

The signal line 578 for transmitting a signal from the wavelength / direction management byte generation circuit 184 to the wavelength multiplexing number detection circuit 162 and the directionality detection circuit 164 of the optical wavelength multiplexer 156 is composed of a plurality of signal lines in this example. ing. In this example, the wavelength / direction management byte generation circuit 184 forms a frame signal with a predetermined frame synchronization signal added to the front of the signal data with the wavelength value data added after the ID number value data. A clock signal output to a predetermined signal line and synchronized with the signal data and the frame synchronization signal is output to a signal line in the signal line 578 different from the predetermined signal line.

In this example, the byte generation circuit 184 outputs two types of signals: a frame structure signal in which decimal number ID number value data and wavelength value data are added to the frame synchronization signal, and a clock signal synchronized with this signal. Although the signal is sent to the detection circuits 162 and 164 by separate signal lines, the detection circuit 16 and 16 are detected by using the overhead access function (Recommendation G.783).
It may be sent to 2 and 164.

The # 2 multiplexer 150 will be described. #
The circuit configuration of the 2-multiplexer 150 is basically the same as that of the # 1 multiplexer 148 (see FIG. 13). The different points will be described below.

First, the input / output relationship will be described. The inputs 570 to 574 of the multiplexer 148 correspond to the inputs 580 to 584 of the multiplexer 150, and the multiplexer 148 is also described.
Output 576 and output 578 are multiplexers
At 150 are outputs 586 and 588. The output 586 is connected to the corresponding input of the optical WDM amplifier 156, and the output 586
Are connected to the corresponding inputs of detection circuits 162 and 164.

Explaining the difference in signal contents, the wavelength value / direction information generating circuit 182 of the multiplexer 150 uses the wavelength value information shown in FIG. 15 (b) as the wavelength value information in this example. Data of 1540 nm (λ2) is generated, and as direction information, the ID number value "2" of the own device 150 and the ID number value of the multiplexing device 236 opposite to the own device 150 shown in FIG. Generate 6 "of data. The semiconductor laser of the electrical / optical conversion circuit 180 of the multiplexing device 150 outputs an optical signal having a wavelength value of λ2.

As shown in FIG. 14, the # 3 multiplexer 152 is composed of an optical / electrical conversion circuit 186 and a demultiplexing circuit 188, of which the optical / electrical conversion circuit 186 constitutes a receiving circuit. The input 590 of the optical / electrical conversion circuit 186 is connected to the corresponding output of the optical wavelength multiplex amplifier circuit 158, and the high-speed optical signal input to this input 590 is output from the # 7 multiplexer 238 opposite to the multiplexer 152. STM-1 with wavelength value of λ3
It is a signal with a frame structure.

The optical / electrical conversion circuit 186 comprises a light receiving element and an amplifier, receives a light intensity signal input from the optical fiber 590 and converts it into an electric signal, and the converted electric signal is converted to a predetermined level by the amplifier. It is a photoelectric conversion circuit that amplifies and outputs to output 632. This circuit outputs serial logic data (high-speed signal) with the STM-1 frame structure. The output 632 is connected to the input of the isolation circuit 188.

The separation circuit 188 inputs the STM- from the input 556.
In this example, the signal of the frame structure of 1 is 3 separated signals
It is a circuit that is separated into 592-596.

The # 4 multiplexer 154 will be described. #
The circuit configuration of the 4-multiplexer 154 is basically the same as that of the # 3 multiplexer 152 (see FIG. 14). The different points will be described below.

First, the input / output relationship will be described. The input 590 of the multiplexer 152 corresponds to the multiplexer 15
4 has inputs 598 and multiplexer 152 outputs 592-59
The equivalent of 6 is output 600-604 in the multiplexer 154.
Is. The input 598 of the multiplexer 154 is connected to the corresponding output of the optical WDM amplifier circuit 158.

Explaining the difference in the contents of the signals, the high-speed optical signal input to the input 598 is the STM- whose wavelength value is λ4 from the # 8 multiplexer 240 facing the multiplexer 154.
This signal has a one-frame structure.

As shown in FIG. 9, the bidirectional optical wavelength division multiplexer 156 includes a bidirectional optical wavelength division multiplexing amplifier circuit 158, a bidirectional optical division multiplexer / demultiplexer circuit 160, a wavelength division number detecting circuit 162, a directionality detecting circuit 164.
The monitor control signal generation circuit 166, the electrical / optical conversion circuit 168, the supervisory control IF circuit 170, the optical / electrical conversion circuit 172, and the supervisory control signal detection circuit 174 are included.

The circuit configuration of the optical wavelength multiplex amplifier circuit 158 is basically the same as that of the optical wavelength multiplex amplifier circuit 64. The optical multiplexer of the optical wavelength multiplex amplifier circuit 158 multiplexes the high speed optical signals of the wavelength value λ1 and the wavelength value λ2 input from the inputs 576 and 586 and sends them to the first optical amplifier. The first optical amplifier has a wavelength value λ1
And the combined optical signal of λ2 is amplified to a predetermined level and sent to the optical multiplexer / demultiplexer. The optical multiplexer / demultiplexer inputs / outputs the multiplexed optical signal of the wavelength values λ1 and λ2 from the first optical amplifier.
Output to 606.

This optical multiplexer / demultiplexer also outputs a second multiplexed optical signal of wavelength values λ3 and λ4 input from the input / output 606.
Send to the optical amplifier. The second optical amplifier amplifies the multiplexed optical signal having the wavelength values λ3 and λ4 to a predetermined level and sends it to the optical demultiplexer. The optical demultiplexer demultiplexes the multiplexed optical signals of the wavelength values λ3 and λ4 from the second optical amplifier for each wavelength value, and outputs the demultiplexed optical signal of the wavelength value λ3 to the output 590, The demultiplexed optical signal of wavelength value λ4 is output to the output 598. The input / output 606 is the input / output 60 of the bidirectional optical demultiplexing circuit 160.
6, the output 590 is connected to the input of the multiplexer 152 and the output 598 is connected to the input of the multiplexer 154.

The circuit configuration of the optical demultiplexing circuit 160 is basically the same as that of the optical demultiplexing circuit 66. Optical demultiplexing circuit 160
Is the multiplexed main signal light of wavelength values λ1 and λ2 input from the input / output 606 and the supervisory channel signal light of wavelength value λs1 input from the input 610, and outputs it to the input / output 608.
From the input / output 608, the signal light multiplexed with the main signal light having the wavelength values λ3 and λ4 and the supervisory channel signal light having the wavelength value λs2 is input, and among the input signal light, the wavelength values λ3 and λ4.
Is an optical multiplexer / demultiplexer that demultiplexes the main signal light of (1) and outputs it to the input / output 606, and demultiplexes the monitoring channel signal light of the wavelength value λs2 of the input signal light and outputs it to the output 612.

The input 610 of the optical demultiplexing circuit 160 is connected to the output of the electrical / optical conversion circuit 168, the input / output 608 is connected to the input / output 608 of the supervisory control optical demultiplexing circuit 190 of the linear intermediate repeater 189, and the output 612. Is connected to the input of the optical / electrical conversion circuit 172.

The wavelength multiplex number detection circuit 162 receives the inputs 578 and
The wavelength value data λ1 and λ2 each consisting of 2 bytes corresponding to the wavelength values λ1 and λ2 input from the 588 are respectively detected, and the number of different wavelength value data among the detected wavelength value data is counted, and The count-based wavelength number data is output 614. In this example, since the number of wavelengths is "2", the wavelength number data of "0010" represented by a decimal number is output to the output 614. This output 614 is connected to the corresponding input of the supervisory control signal generation circuit 166.

The directionality detection circuit 164 has inputs 578 and 588.
Input the ID number value data including "1" and "5" and the ID number value data including "2" and "6", and output the detected ID number value data to the output 616. . The output 616 is connected to the corresponding input of the supervisory control signal generation circuit 166.

The supervisory control signal generating circuit 166 is a circuit for generating a frame-structured signal that carries information in the supervisory channel. In this example, a signal having a frame structure conforming to RSOH that is transferred by the main signal light is generated, as mentioned earlier. In detail, the signal of this frame structure consists of at least a predetermined frame synchronization byte, followed by one or more bytes corresponding to RS1 E1 bytes and D1 to D3 bytes, and E1 bytes and D1 bytes or E1 to En bytes and F1L byte or F1L to FnL consisting of D1 to Dn bytes and one or more bytes corresponding to F1 byte of RSOH
Bytes and one or more bytes for transferring the communication status of the monitoring channel and the like.

The monitor control signal generation circuit 166 is
The ID number value data including "1" and "5" input from the input 616 is multiplexed to the position of the F1L byte, and the ID number value data including "2" and "6" input from the same input 616 is F2L. Multiplex to byte position. In this example, the monitoring control signal generation circuit 166 receives the wavelength number data of "2" input from the input 614.
It is multiplexed at the D1 byte position. In this case, all the remaining 4 bits of the D1 byte may be multiplexed with "0".

The generation circuit 166 forms the signal of the frame structure for the supervisory channel in which the ID number value data of 2 bytes and the wavelength number data of 1 byte are multiplexed as described above, and outputs it to the outputs 618 and 620. To do. The output 618 is connected to the input of the electro-optical conversion circuit 168, and the output 620 is connected to the corresponding input of the supervisory control IF circuit 170.

In this example, the ID number value data is F1L.
The wavelength number data is multiplexed at the D1 byte position and the wavelength number data at the F2L byte position, but the ID number value data may be multiplexed at the D1 and D2 byte positions and the wavelength number data may be multiplexed at the F1L byte position, respectively. In other words, any byte position may be used as long as this system determines the byte position of the data to be multiplexed.

The circuit configuration of the electric / optical conversion circuit 168 is basically the same as that of the electric / optical conversion circuit 72, and a signal (serial logic data) input from the input 618 has a wavelength value of λs1 via a drive circuit. It sends it to the semiconductor laser, converts the sent logical data into a light intensity signal, and outputs it to the optical demultiplexing circuit 160 through the optical fiber 610.

The supervisory control IF circuit 170 has inputs 620 and 622.
It is an interface having a function of sending the following information signals input from the network management terminal device 176 described later. The inputs 620 have "1" and "5" from the generator circuit 166.
The ID number value data including and and the ID number value data including "2" and "6" are multiplexed in the positions of F1L and F2L bytes, and the wavelength number data of "2" is multiplexed in the position of D1 byte. A frame structure signal for the supervisory channel is sent. input
At 622, the detection circuit 174 multiplexes the ID number value data including "7" and "3" and the ID number value data including "8" and "4" in this example to the positions of the F1L and F2L bytes. , "2"
The signal of the frame structure for the supervisory channel in which the wavelength number data of is multiplexed at the position of D1 byte is sent.

The circuit configuration of the optical / electrical conversion circuit 172 is basically the same as that of the optical / electrical conversion circuit 80.
A photoelectric conversion circuit that receives a light intensity signal having a wavelength value of λs2 input from 2 and converts it into an electric signal, amplifies the converted electric signal to a predetermined level by an amplifier, and outputs it to an output 626. This input 612, in this example, is ID number value data that contains "7" and "3" at the F1L byte position, ID number value data that contains "8" and "4" at the F2L byte position, and D1.
The signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed is input to the byte position. Output 626
Is connected to the input of the supervisory control signal detection circuit 174.

The supervisory control signal detection circuit 174 inputs the ID number value data including “7” and “3” at the F1L byte position input from the input 626, and “8” and “4” at the F2L byte position. Including ID
The number value data detects the signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed at the position of D1 byte and outputs it to the output 622. Output 622 is supervisory control
It is connected to the corresponding input of the IF circuit 170.

In this example, the network management terminal device 176 uses the ID number value data including "1" and "5" of the terminal station 142 input from the input 624, and the ID number including "2" and "6". Value data, numerical value data of "2" and "7" from terminal station 146 side
ID number value data including "3" and ID including "8" and "4"
Convert the number value data and the numerical wavelength data of "2" into a signal of a format that can be displayed and display it on the monitor.

From the display including "1" and "5", the main signal light is sent from the # 1 multiplexer 148 to the # 5 multiplexer 234, and the display including "2" and "6" is displayed. To # 2 multiplexer 15
The main signal light is sent from 0 to the # 6 multiplexer 236, and the signal light with the multiplexing number of 2 is sent from the terminal station 142 to the terminal station 146 from the display of "2", and "7" and "3" are sent. From display including "and # 7
The main signal light is sent from the multiplexer 238 to the # 3 multiplexer 152, and from the display including "8" and "4" to the main from the # 8 multiplexer 240 to the # 4 multiplexer 154. The signal light is transmitted, and it is understood from the display of "2" that the signal light having the multiplexing number of 2 is transmitted from the terminal station 146 to the terminal station 142. In this way, the terminal station 142 can know the multiplexing number and the directionality of the optical signals of this system, and can manage them appropriately.

Referring to FIG. 10, the linear intermediate repeater 189
Is a supervisory control light separation circuit 190, 194, a bidirectional light amplification circuit 192,
Optical / electrical conversion circuits 196, 206, supervisory control signal detection circuits 198, 20
8, wavelength multiplexing number detection circuit 200, 210, directionality detection circuit 202, 212
And excitation light source control circuits 204 and 214.

The supervisory control light splitting circuit 190 inputs from the input / output 608 the signal light obtained by multiplexing the main signal light having the wavelength values λ1 and λ2 and the supervisory channel signal light having the wavelength value λs1. Output to the output 638, and demultiplex the input signal light of the supervisory channel signal light of wavelength value λs1 to the output 636, and from the input 634 the main signal light of wavelength values λ3 and λ4 and the wavelength value λs2. Input the signal light multiplexed with the monitoring channel signal light and input / output this input signal light 608
It is an optical multiplexer / demultiplexer that outputs to.

Similarly to the demultiplexing circuit 190, the supervisory control light demultiplexing circuit 194 also inputs, from the input / output 646, the signal light that is a combination of the main signal light having the wavelength values λ3 and λ4 and the monitoring channel signal light having the wavelength value λs2. , The input signal light is output to the output 645, and the monitoring channel signal light having the wavelength value λs2 of the input signal light is demultiplexed and output to the output 648, and the input 644 outputs the main wavelength values λ1 and λ2. It is an optical multiplexer / demultiplexer that inputs the signal light that is multiplexed with the signal light and the supervisory channel signal light having the wavelength value λs1 and outputs the input signal light to the input / output 646.

The bidirectional optical amplifier circuit 192 is 1.55 in this example.
It is composed of first and second optical fiber type amplifier circuits including a pumping light source circuit capable of collectively amplifying a plurality of wavelengths in the μm wavelength band. The first optical fiber type amplifier circuit is an amplifier circuit for the signal light transmitted from the terminal station 142 to the terminal station 146, and the second optical fiber type amplifier circuit is the signal light transmitted from the terminal station 146 to the terminal station 142. It is an amplifier circuit.

The first optical fiber type amplifier circuit multiplexes the pumping light of the intensity based on the first control signal from the input 640 by the pumping light source circuit and the signal light from the input 638, and combines them to obtain an optical signal. Of these, it is a circuit that amplifies the signal light to a predetermined level based on the first control signal and outputs it to the output 644.

The second optical fiber type amplifier circuit multiplexes the pumping light of the intensity based on the second control signal from the input 642 by the pumping light source circuit and the signal light from the input 645, and combines them to obtain an optical signal. It is a circuit that amplifies the signal light to a predetermined level based on the second control signal and outputs it to the output 634. In this example, the first and second control signals are signals corresponding to the wavelength multiplexing number "2".

The circuit configuration of the optical / electrical conversion circuit 196 is basically the same as that of the optical / electrical conversion circuit 80.
A light intensity signal having a wavelength value of λs1 input from 6 is received and converted into an electric signal, and the converted electric signal is amplified to a predetermined level by an amplifier and output to an output 650. This input
In this example, the 636 has ID number value data that contains "1" and "5" at the F1L byte position, and "2" and "6" at the F2L byte position.
The signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed at the position of the D1 byte and the ID number value data including and is input. The output 650 is connected to the input of the supervisory control signal detection circuit 198.

The circuit configuration of the optical / electrical conversion circuit 206 is basically the same as that of the optical / electrical conversion circuit 80.
A light intensity signal having a wavelength value of λs2 input from 8 is received and converted into an electric signal, and the converted electric signal is amplified to a predetermined level by an amplifier and output to an output 658. This input
In this example, the 648 has ID number value data that contains "7" and "3" at the F1L byte position, and "8" and "4" at the F2L byte position.
The signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed at the position of the D1 byte and the ID number value data including and is input. The output 658 is connected to the input of the supervisory control signal detection circuit 208.

The supervisory control signal detection circuit 198 inputs the ID number value data including "1" and "5" at the F1L byte position input from the input 650 and "2" and "6" at the F2L byte position. Including ID
The number value data detects the signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed at the position of D1 byte and outputs it to the outputs 652 and 654. Output 65
2 is connected to the input of the wavelength division number detection circuit 200 and output 65
4 is connected to the input of the directionality detection circuit 202.

Similarly, the supervisory control signal detection circuit 208 also receives an input signal.
The ID number value data that contains "7" and "3" at the F1L byte position input from the 658 and the ID number value data that contains "8" and "4" at the F2L byte position are at the D1 byte position. Then, the signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed is detected and output to the outputs 660 and 662. The output 660 is connected to the input of the wavelength multiplex number detection circuit 210, and the output 662 is connected to the input of the directionality detection circuit 212.

The wavelength multiplex number detection circuit 200 detects D1 byte data from each data input from the input 652 and outputs it.
Output to. The output 656 is connected to the pump light source control circuit 204. The wavelength multiplex number detection circuit 210 also detects and outputs D1 byte data from each data input from the input 660.
Output to 664. Output 664 is connected to pump source control circuit 214.

The pumping light source control circuit 204 forms a control signal based on the D1 byte wavelength number data and outputs it to the output 640. In this example, the control circuit 204 forms the first control signal based on 2 because the number of wavelengths is 2. Similarly, the pumping light source control circuit 214 also forms a control signal based on the wavelength number data of D1 byte and outputs it to the output 642. In this example, the control circuit 214 also has the number of wavelengths of 2 and therefore forms the second control signal based on 2. As a result, the signal lights having the intensity based on 2 are finally output from the input / output 608 and 646.

As described above, the relay station 144 can know the state of the number of multiplexed optical signals of this system, appropriately manages this, and outputs it as signal light of appropriate intensity based on the number of multiplexed signals. be able to.

The directionality detection circuit 202 includes "1" and "5"
The ID number value data and the ID number value data including "2" and "6" are output to a monitor device (not shown), and the directionality detection circuit is also provided.
212 also has ID number value data including "7" and "3" and "8" and "4"
The ID number value data including and is output to the same monitor device. In this way, the relay station 144 can know the directional state of the optical signal of this system and can appropriately manage it.

Referring to FIG. 11, a bidirectional optical wavelength multiplexer 216 includes a bidirectional optical demultiplexing circuit 217, a bidirectional optical wavelength multiplexing amplifier circuit 218, an optical / electrical conversion circuit 220, and a supervisory control signal detection circuit.
222, a supervisory control IF circuit 224, a wavelength multiplex number detection circuit 226, a directionality detection circuit 228, a supervisory control signal generation circuit 230, and an electrical / optical conversion circuit 232.

The circuit configuration of the optical demultiplexing circuit 217 is basically the same as that of the optical demultiplexing circuit 66. Optical demultiplexing circuit 217
Is the multiplexed main signal light of wavelength values λ3 and λ4 input from the input / output 670 and the supervisory channel signal light of wavelength value λs2 input from the input 674, and outputs it to the input / output 646.
From the input / output 646, a signal light that is a combination of the main signal light having the wavelength values λ1 and λ2 and the monitoring channel signal light having the wavelength value λs1 is input, and the wavelength values λ1 and λ2 of the input signal light are input.
Is an optical multiplexer / demultiplexer that demultiplexes the main signal light of (1) and outputs it to the input / output 670, and demultiplexes the monitoring channel signal light of the wavelength value λs1 of the input signal light and outputs it to the output 672.

The input 674 is connected to the output of the electric / optical conversion circuit 232, the input / output 670 is connected to the input / output 670 of the optical WDM amplifier circuit 218, and the output 672 is connected to the input of the optical / electrical conversion circuit 220. ing.

The circuit configuration of the optical wavelength multiplex amplifier circuit 218 is basically the same as that of the optical wavelength multiplex amplifier circuit 64. The optical multiplexer / demultiplexer of the optical wavelength multiplex amplifier circuit 218 sends the multiplexed optical signal of the wavelength values λ1 and λ2 input from the input / output 670 to the first optical amplifier. The first optical amplifier amplifies the multiplexed optical signal having the wavelength values λ1 and λ2 to a predetermined level and sends it to the optical demultiplexer. The optical demultiplexer demultiplexes the multiplexed optical signal of the wavelength values λ1 and λ2 from the first optical amplifier for each wavelength value,
The demultiplexed wavelength λ1 optical signal is output to the output 676, and the demultiplexed wavelength λ2 optical signal is output to the output 678.

Further, the optical multiplexer of the optical wavelength multiplex amplifier circuit 218 multiplexes the high speed optical signals of the wavelength values λ3 and λ4 inputted from the inputs 680 and 682 and sends them to the second optical amplifier. The second optical amplifier amplifies the multiplexed optical signal having the wavelength values λ3 and λ4 to a predetermined level and sends it to the optical multiplexer / demultiplexer. The optical multiplexer / demultiplexer outputs the multiplexed optical signal of the wavelength values λ3 and λ4 from the second optical amplifier to the input / output 670. Input 680 is connected to the corresponding output of multiplexer 238, input 682 is connected to the corresponding output of multiplexer 240, output 676 is connected to the input of multiplexer 234 and output 678 is connected to multiplexer 236. Connected to the input of.

The circuit configuration of the optical / electrical conversion circuit 220 is basically the same as that of the optical / electrical conversion circuit 80.
A light intensity signal having a wavelength value of λs1 input from 2 is received and converted into an electric signal, and the converted electric signal is amplified to a predetermined level by an amplifier and output to an output 684. This input
In this example, the 672 has ID number value data that includes "1" and "5" at the F1L byte position, and "2" and "6" at the F2L byte position.
The signal of the frame structure for the supervisory channel in which the ID number value data including and and the wavelength number data of "2" are respectively multiplexed at the position of the D1 byte is input. The output 684 is connected to the input of the supervisory control signal detection circuit 222.

The supervisory control signal detection circuit 222 inputs the ID number value data including "1" and "5" at the F1L byte position input from the input 684 and "2" and "6" at the F2L byte position. Including ID
The number value data detects the signal of the frame structure for the supervisory channel in which the wavelength number data of "2" is multiplexed at the position of D1 byte and outputs it to the output 686. Output 686 is supervisory control
It is connected to the corresponding input of the IF circuit 224.

The supervisory control IF circuit 690 has inputs 686 and 688.
This is an interface having a function of sending the following information signals input from the network management terminal device 242. From the detection circuit 222 to the input 686, in this example "1" and "
ID number value data containing 5 "and I containing" 2 "and" 6 "
The D number value data is multiplexed at the F1L and F2L byte positions, and the wavelength number data of "2" is multiplexed at the D1 byte position. Also, the ID number value data including "7" and "3" from the generation circuit 230 and "8" and "4" are input to the input 688.
The ID number value data including and is multiplexed in the positions of F1L and F2L bytes, and the wavelength number data of "2" is multiplexed in the position of D1 bytes.

The wavelength multiplex number detection circuit 226 has inputs 694 and
The wavelength value data λ3 and λ4 each consisting of 2 bytes corresponding to the wavelength values λ3 and λ4 input from 692 are respectively detected, and the number of different wavelength value data among the detected wavelength value data is counted, and The count-based wavelength number data is output 696. In this example, since the number of wavelengths is "2", the wavelength number data of "0010" represented by a decimal number is output to the output 696. This output 696 is connected to the corresponding input of the supervisory control signal generation circuit 230.

The directionality detection circuit 228 has inputs 694 and 692.
Input the ID number value data including "7" and "3" and the ID number value data including "8" and "4", respectively, and output these detected ID number value data to the output 698. . The output 698 is connected to the corresponding input of the supervisory control signal generation circuit 230.

The supervisory control signal generation circuit 230 is
The ID number value data including "7" and "3" input from the input 698 is multiplexed to the position of the F1L byte, and the ID number value data including "8" and "4" input from the same input 698 is F2L. Multiplex to byte position. In this example, the supervisory control signal generation circuit 166 receives the wavelength number data of “2” input from the input 696.
It is multiplexed at the D1 byte position.

The generation circuit 230 forms the signal of the frame structure for the supervisory channel in which the ID number value data of 2 bytes and the wavelength number data of 1 byte are multiplexed as described above and outputs it to the outputs 688 and 700. To do. The output 700 is connected to the input of the electro-optical conversion circuit 232, and the output 688 is connected to the corresponding input of the supervisory control IF circuit 224.

The circuit configuration of the electric / optical conversion circuit 232 is basically the same as that of the electric / optical conversion circuit 72, and a signal (serial logic data) input from the input 700 has a wavelength value of λs2 via a drive circuit. It sends it to the semiconductor laser, converts the sent logical data into a light intensity signal, and outputs it to the bidirectional optical demultiplexing circuit 217 through the optical fiber 674.

Referring to FIG. 11, the terminal station 146 has # 5 to #
8 multiplexers 234-240 are provided. The circuit configuration of the # 5 multiplexer 234 is basically the same as the circuit configuration of the # 3 multiplexer 152 (see FIG. 14). The different points will be described below.

First, the input / output relationship will be described. The input 590 of the multiplexer 152 corresponds to the multiplexer 23.
4 is the input 676 and the multiplexer 152 outputs 592-59
The equivalent of 6 is output 702-706 in the multiplexer 234.
Is. The input 676 of the multiplexer 234 is connected to the corresponding output of the optical WDM amplifier circuit 218.

Explaining the difference in the contents of the signals, the high-speed optical signal input to the input 676 is the STM- whose wavelength value is λ1 from the # 1 multiplexer 148 facing the multiplexer 234.
This signal has a one-frame structure.

The circuit configuration of the # 6 multiplexer 236 is basically the same as that of the # 3 multiplexer 152 (see FIG. 14). The different points will be described below.

First, the input / output relationship will be described. The input device 590 of the multiplexer 152 corresponds to the multiplexer 23.
6 is the input 678 and the multiplexer 152 outputs 592-59
The equivalent of 6 is output 708-712 in the multiplexer 236.
Is. The input 678 of the multiplexer 236 is connected to the corresponding output of the optical WDM amplifier circuit 218.

Explaining the difference in the contents of the signals, the high-speed optical signal input to the input 678 is the STM- whose wavelength value is λ2 from the # 2 multiplexer 150 facing the multiplexer 236.
This signal has a one-frame structure.

The circuit configuration of the # 7 multiplexer 238 is basically the same as the circuit configuration of the # 1 multiplexer 148 (see FIG. 13). The different points will be described below.

First, the input / output relationship will be described. Corresponding to the inputs 570 to 574 of the multiplexer 148 are the inputs 714 to 718 of the multiplexer 238, and the multiplexers
The corresponding outputs 576 and 578 of 148 are outputs 680 and 694 in multiplexer 238. The output 680 is connected to the corresponding input of the optical WDM amplifier 218, and the output
694 is connected to the corresponding inputs of detection circuits 226 and 228.

Explaining the difference in signal contents, the wavelength value / direction information generating circuit 182 of the multiplexing device 238 in this example generates the data of λ3 as the wavelength value information, and the directional information. As a result, data of the ID number value “7” of the own device 238 and the ID number value “3” of the multiplexing device 152 facing the own device 238 is generated. The semiconductor laser of the electrical / optical conversion circuit 180 of the multiplexer 238 outputs an optical signal having a wavelength value of λ3.

The circuit configuration of the # 8 multiplexer 240 is basically the same as the circuit configuration of the # 1 multiplexer 148 (see FIG. 13). The different points will be described below.

First, the input / output relationship will be described. The inputs 570 to 574 of the multiplexer 148 correspond to the inputs 720 to 724 of the multiplexer 240.
The corresponding outputs 576 and 578 of 148 are outputs 682 and 692 in multiplexer 240. The output 682 is connected to the corresponding input of the optical WDM amplifier circuit 218, and the output
692 is connected to the corresponding inputs of detection circuits 226 and 228.

Explaining the difference in signal contents, the wavelength value / direction information generation circuit 182 of the multiplexing device 240 in this example generates the data of λ4 as the wavelength value information, and the directional information. Generates data of the ID number value “8” of the own device 240 and the ID number value “4” of the multiplexing device 154 facing the own device 240. The semiconductor laser of the electrical / optical conversion circuit 180 of the multiplexer 240 outputs an optical signal having a wavelength value of λ4.

Referring to FIG. 11, the terminal station 146 is provided with a network management terminal device 242, which in this example is
Input from input terminal 690 ID number value data including "1" and "5" from terminal station 142 side, ID number value data including "2" and "6", wavelength numerical data of "2" and end "7" and "on station 146 side
The ID number value data including "3", the ID number value data including "8" and "4", and the wavelength numerical value data of "2" are converted into a displayable signal and displayed on the monitor. As explained in 142, from this display, the terminal station 146 and the terminal station 1
Similar to 42, it is possible to know the number of multiplexed optical signals in this system and the state of directionality, and to manage them appropriately.

In this example, the wavelength multiplexing number detection circuit 162,
The circuit configuration of 226 and the direction detection circuits 164, 228, etc.
Since the number of multiplexers is two (the number of wavelengths in one direction is two), the circuit has a two-circuit configuration. For example, when the number of multiplexers is three, a three-circuit configuration is sufficient. The number of circuit configurations corresponding to the number of

In this example, the circuit configuration is such that it transmits the wavelength value (converts the wavelength value to the wavelength multiplexed value) information and the directionality information, but only the wavelength value (converts the wavelength value to the wavelength multiplexed value) information. May be used, or a circuit configuration that sends only the directional information may be used.

In this example, the system configuration is a bidirectional optical WDM transmission system, but it may be a unidirectional optical WDM transmission system. Further, in this example, the system configuration is a bidirectional optical wavelength multiplex transmission system having one repeater station having a linear intermediate repeater between the terminal stations, but the configuration of the optical wavelength multiplex transmission system between the terminal stations is shown. Alternatively, one or a plurality of relay stations having a regeneration intermediate relay apparatus and / or a linear intermediate relay apparatus may exist between the terminal stations.

In this case, the regeneration and linear intermediate repeater comprises an optical demultiplexer for separating the monitoring channel signal light and an optical / electrical converter for converting the monitoring channel signal light separated by the optical demultiplexer into an electric signal. And a byte detection circuit for extracting each byte included in the electric signal converted by the optical / electrical converter, and a display for displaying information of each byte extracted by the byte detection circuit. Therefore, the information multiplexed in each byte can be monitored.

With reference to FIGS. 9 to 11, since the terminal station 142 and the terminal station 146 have basically the same configuration, the terminal station
The operations of 142 and relay station 144 will be mainly described. First,
The operation of the terminal station 142 will be described.

The multiplexing circuit 178 of the # 1 multiplexer 148 is
The three input # 1 to # 3 multiplexed signals (STM-0 frame signals) 570 to 574 are multiplexed to form a high speed signal (STM-1 frame signal) and sent to the electrical / optical conversion circuit 180. The electric / optical conversion circuit 180 converts the high-speed signal, which is an electric signal sent, into a high-speed optical signal (wavelength value λ1) and converts it into an optical fiber 57.
Optical wavelength multiplex amplifier circuit of optical wavelength multiplexer 156 via 6
Send to 158. Also, the wavelength value / direction information generation circuit 182 of the # 1 multiplexer 148 has wavelength value data λ1 consisting of a decimal number, which is the wavelength value information of its own device 148, and its own device 148, which is the direction information of its own device 148. ID number value data "1" and the ID number value data "5" of the # 5 multiplexer 234 facing the own device 148 are generated, and these generated data are generated by the wavelength / direction management byte generation circuit 184 and the signal line. It is sent to the wavelength multiplex number detection circuit 162 and the directionality detection circuit 164 of the optical wavelength multiplexer 156 via 578.

Similarly, the multiplexing circuit of the # 2 multiplexer 150
The 178 also receives three input signals # 1 to # 3 (STM-0
Frame signals) 580 to 584 are multiplexed and high-speed signals (STM-
1 frame signal) is formed and sent to the electrical / optical conversion circuit 180. The electrical / optical conversion circuit 180 converts the high-speed signal, which is an electric signal sent, into a high-speed optical signal (wavelength value λ2) and sends it to the optical wavelength multiplex amplification circuit 158 via the optical fiber 586. In addition, the wavelength value / direction information generation circuit 182 of the # 2 multiplexer 150.
Is the wavelength value data λ2 consisting of a decimal number, which is the wavelength value information of the own device 150, and the directionality information of the own device 150.
The ID number value data "2" of the own device 150 and the ID number value data "6" of the # 6 multiplexing device 236 opposite to the own device 150 are generated in the form of a base number, and these generated data are wavelength / direction management bytes. It is sent to the wavelength multiplex number detection circuit 162 and the directionality detection circuit 164 via the generation circuit 184 and the signal line 588.

The optical wavelength multiplex amplifier circuit 158 is an optical fiber 576.
Optical demultiplexing circuit that combines and amplifies the high-speed optical signal with wavelength value λ1 from the optical fiber and the high-speed optical signal with wavelength value λ2 from the optical fiber 586.
Send to 160. On the other hand, the wavelength multiplex number detection circuit 162 uses the signal line 5
The wavelength value data λ1 from the 78 and the wavelength value data λ2 from the signal line 588 are detected, the number of different wavelength values in the detected wavelength value data is counted, and the wavelength is a decimal number based on the count. The numerical data "2" is sent to the supervisory control signal generation circuit 166. Further, the direction detection circuit 164 uses the signal line 57
ID number value data "1" and "5" from 8 and signal line 588
The ID number value data "2" and "6" from are detected and sent to the supervisory control signal generation circuit 166. Supervisory control signal generation circuit 16
6 is the input ID number value data "1" and "5" in the position of F1L byte, ID number value data "2" and "6" in the position of F2L byte, wavelength number data "2" in the D1 byte An electric / optical conversion circuit 168 and a supervisory control IF circuit for forming a supervisory channel frame structure signal which is multiplexed at each position
Send to 170.

The electric / optical conversion circuit 168 converts the transmitted electric signal of the frame structure for the supervisory channel into the supervisory channel optical signal of the wavelength value λs1 and sends it to the optical demultiplexing circuit 160 via the optical fiber 610. . The optical demultiplexing circuit 160 combines the high-speed optical signal with the wavelength values λ1 and λ2 from the optical fiber 606 and the supervisory channel optical signal with the wavelength value λs1 from the optical fiber 610, and the relay station via the optical fiber 608.
144 linear intermediate repeater 189 supervisory control optical separation circuit 190
Send to.

Further, the optical demultiplexing circuit 160 of the terminal station 142 outputs the wavelength value of the high-speed optical signal of the wavelength values λ3 and λ4 multiplexed from the supervisory control optical demultiplexing circuit 190 of the relay station 144 via the optical fiber 608. An optical signal obtained by multiplexing the supervisory channel optical signal of λs2 is sent. The optical demultiplexing circuit 160 sends the supervisory channel optical signal of the wavelength value λs2 of the input optical signal to the optical / electrical conversion circuit 172 via the optical fiber 612, and the high speed of the input optical signal of the wavelength values λ3 and λ4. The optical signal is sent to the optical wavelength multiplex amplifier circuit 158 via the optical fiber 606.

The optical / electrical conversion circuit 612 converts the supervisory channel optical signal having the wavelength value λs2 into an electrical signal and sends it to the supervisory control signal detection circuit 174, and the supervisory control signal detection circuit 174 receives the supervisory channel of the sent electrical signal. The frame structure signal is detected and sent to the supervisory control IF circuit 170. The ID number data values "7" and "3" are located at the F1L byte position and the ID number data values "8" and "4" are located at the F2L byte position in the detected supervisory channel frame structure signal. However, wavelength number data "2" is multiplexed at the position of D1 byte.

The optical wavelength multiplex amplification circuit 158 is the optical fiber 606.
The amplified high-speed optical signal of wavelength values λ3 and λ4 is amplified and demultiplexed, and the demultiplexed high-speed optical signal of wavelength value λ3 is sent to the # 3 multiplexer 152 via the optical fiber 590, and is demultiplexed. The transmitted high-speed optical signal having the wavelength value λ4 is sent to the # 4 multiplexer 154 via the optical fiber 598.

# 3 Optical / electrical conversion circuit 18 of multiplexer 152
Reference numeral 6 converts the input high-speed optical signal (wavelength value λ3) into an electric signal and sends the converted high-speed signal to the separation circuit 188. The separation circuit 188 converts the received high-speed signal into three low-speed optical signals (#
1 to # 3 signals to be separated) 592 to 596 are separately output.

Similarly, the optical / electrical conversion circuit 186 of the # 4 multiplexer 154 also receives the input high-speed optical signal (wavelength value λ4).
Is converted into an electrical signal, and this converted high-speed signal is separated
Send to 188. The separation circuit 188 separates the received high speed signal into three low speed optical signals (# 1 to # 3 separated signals) 600 to 604 and outputs them.

The supervisory control IF circuit 170 has the F1L byte ID number data values "1" and "5" from the supervisory control signal generation circuit 174 and the F2L byte ID number data values "2" and "6".
, D1 byte wavelength number data "2", F1L byte ID number data values "7" and "3" from the supervisory control signal detection circuit 82, and F2L byte ID number data values "8" and "Four"
, And D1 byte wavelength number data "2", respectively.
4 to the network management terminal device 176.

The network management terminal device 176 converts the transmitted data into a signal in a format that can be displayed on the monitor and displays it on the signal. This projection is a # 1 multiplexer 148.
To # 5 multiplexer 234, # 2 multiplexer 150 to # 6 multiplexer 236, # 7 multiplexer 238 to # 3 multiplexer 152, # 8 multiplexer 240 to # 4 multiplexer. It is shown that the signals are respectively transferred to the multiplexers 154, the signals having the wavelength multiplexing number of 2 are transferred from the terminal station 142 to the terminal station 146, and the signals having the wavelength multiplexing numbers of 2 are also transferred from the terminal station 146. It indicates that the data is transferred to the terminal station 142.

As described above, according to the second embodiment, the optical wavelength division multiplexer 156 uses the ID of its own device 148 from the multiplexer 148.
The number value data “1” and the ID number value data “5” of the opposite multiplexer 234, and the own device 150 from the multiplexer 150
ID number value data "2" and multiplexing device 236 that is the connection destination
ID number value data "6" of the network management terminal device 17
I am sending to 6. This allows the network management terminal device
A signal 176 is transferred from the # 1 multiplexer 148 to the # 5 multiplexer 234, and a signal is transferred from the # 2 multiplexer 150 to the # 6 multiplexer.
Indicates that the signal is transferred to 236. Therefore, the administrator can accurately manage the signal transfer direction, that is, the directionality in this system.

As described above, according to the second embodiment, the optical wavelength multiplexer 156 has the wavelength value data λ1 from the multiplexer 148 and the wavelength value data λ2 from the multiplexer 150.
The wavelength number data "2" is generated based on the above, and is sent to the network management terminal device 176. As a result, the network management terminal device 176 indicates that the number of wavelength-multiplexed signals transferred from the terminal station 142 to the terminal station 146 is two. Therefore, the administrator can accurately manage the number of wavelength division multiplexing in this system.

As described above, according to the second embodiment, the optical wavelength multiplexer 156 detects the supervisory channel frame structure signal transmitted from the optical wavelength multiplexer 216, and the detected supervisory channel is detected. F1 in the frame structure signal
ID number data value "7" and "3" at L byte position, and F2
ID number data value "8" and "4" at L byte position, and D1
The wavelength number data "2" at the byte position is sent to the network management terminal device 176. As a result, the network management terminal device 176 transfers the signal from the # 7 multiplexer 238 to the # 3 multiplexer 152, and the # 8 multiplexer 240 to # 4.
It indicates that the signal is transferred to the multiplexer 154, and that the number of wavelength-multiplexed signals transferred from the terminal station 146 to the terminal station 142 is two. Therefore, the administrator can appropriately manage the signal transfer direction, that is, the directionality and the wavelength multiplexing number in this system.

Next, the operation of relay station 144 will be described.

The supervisory control optical demultiplexing circuit 190 of the relay station 144 includes the optical demultiplexing circuit 160 of the terminal station 142 and the optical fiber 608.
The multiplexed optical signal of the supervisory channel optical signal of the wavelength value λs1 is sent to the multiplexed high-speed optical signal of the wavelength values λ1 and λ2 via. The supervisory control optical demultiplexing circuit 190 sends the supervisory channel optical signal of the wavelength value λs1 among the input optical signals to the optical / electrical conversion circuit 196 via the optical fiber 636, and the wavelength values λ1, λ2 and The optical signal of λs1 is sent to the bidirectional optical amplifier circuit 192 via the optical fiber 638.

The optical / electrical conversion circuit 196 converts the supervisory channel optical signal having the wavelength value λs1 into an electrical signal and sends it to the supervisory control signal detection circuit 198. The supervisory control signal detection circuit 198 converts the sent electrical signal. The signal of the frame structure for the supervisory channel is detected and sent to the wavelength multiplex number detection circuit 200 and the directionality detection circuit 202. The ID number data value "is set at the position of the F1L byte in the detected signal of the frame structure for the monitoring channel.
7 "and" 3 ", ID number data values" 8 "and" 4 "are multiplexed at the F2L byte position, and wavelength number data" 2 "is multiplexed at the D1 byte position.

The wavelength multiplexing number detection circuit 200 detects the wavelength number data "2" from the respective data sent from the supervisory control signal detection circuit 198 and sends it to the pump light source control circuit 204, and the pump light source control circuit 204 sends it. A first control signal based on the received wavelength number data "2" is formed and sent to the optical amplifier circuit 192. The optical amplifier circuit 192 has a first optical fiber type amplifier circuit including a pumping light source circuit, and the first control signal is sent to the pumping light source circuit. The first optical fiber type amplifier circuit uses the pumping light from the pumping light source circuit having the intensity based on the first control signal and the optical fiber 63.
The signal light from 8 is multiplexed, and the signal light of the multiplexed optical signal is amplified to a predetermined level based on the first control signal and sent to the optical fiber 646 via the supervisory control light separation circuit 194.

The directionality detection circuit 202 includes ID number value data including "1" and "5" and "2" and "6" from each data sent from the supervisory control signal detection circuit 198. The ID number value data and the monitor data (not shown) are output. Terminal 146
The circuit system for transferring a signal from the terminal station 142 to the terminal station 142 is basically the same as the circuit system for transferring a signal from the terminal station 142 to the terminal station 146 described above, and therefore description thereof will be omitted.

As described above, according to the second embodiment, the relay station 14
The administrator of 4 can know the state of the multiplexed number of the optical signal of this system, can output it as signal light of the intensity based on the multiplexed number, can know the direction of the optical signal,
These can be managed appropriately.

In this example, the multiplexer outputs STM-1 frame signals, but it may output STM-4, 16, 64 frame signals.

[0239]

As described above, according to the present invention, the first network management terminal means of the first terminal station has the identification number value data inserted from the first interface means to the first to fourth positions. Receive. As a result, the first network management terminal means monitors which multiplexer the first and second multiplexers of the first terminal station are connected to on the basis of the received identification number value data. To display. Therefore, it is possible to know the connection state of the multiplexing device of this system and to appropriately manage the connection state.

As described above, according to the present invention, the second network management terminal means of the second terminal station receives the identification number value data inserted in the first to fourth positions from the second interface means. receive. As a result, the second network management terminal means monitors which multiplexer the first and second multiplexers of the second terminal station are connected to on the basis of the received identification number value data. To display. Therefore, it is possible to know the connection state of the multiplexing device of this system and to appropriately manage the connection state.

As described above, according to the present invention, the connection destination information comparing means of the second terminal station receives the identification number value data inserted in the first position from the connection destination information detecting means and the third multiplex. The identification number value data inserted in the position indicating the connection source from the encryption device is compared, and the identification number value data inserted in the second position from the connection destination information detecting means and the third number are compared.
Of the multiplex device is compared with the third identification number value data of this multiplex device by replacing the identification number value data inserted at the position indicating the connection destination, and if both are matched by these comparisons, The first match data, and if either or both do not match, the first mismatch data is output to the second interface means, and is inserted at the third position from the connection destination information detecting means. The identification number value data is compared with the identification number value data inserted in the position indicating the connection source from the fourth multiplexing device, and the identification inserted in the fourth position from the connection destination information detecting means. The number value data is compared with the fourth identification number value data of this multiplexing device by replacing the identification number value data inserted at the position indicating the connection destination from the fourth multiplexing device, and both are compared by these comparisons. If it matches the case of the second matching data and either or both mismatch outputs a second mismatch data to the second interface means.

The second interface means sends the first match data or the first mismatch data and the second match data or the second mismatch data from the connection destination information comparing means to the second network management terminal means. ing. Second
Network management terminal means If the received data is matching data, it indicates that it is connected normally, and if the received data is inconsistent data, it indicates that it is always connected incorrectly and that monitor is displayed. indicate. Therefore, when a message indicating that the connection is always illegal is displayed, the connection can be changed so that the connection becomes normal.

As described above, according to the present invention, the optical matrix switch means of the second terminal station receives the first high speed optical signal and the second high speed optical signal demultiplexed by the second optical demultiplexing means. , And the first match data or the first mismatch data and the second match data or the second mismatch data from the connection destination information comparing means, and if the first and second match data is received, When the first high-speed optical signal is output to the first output terminal, the received second high-speed optical signal is output to the second output terminal, and the first and / or second mismatch data is received, The received first high-speed optical signal is output to the second output terminal, and the received second high-speed optical signal is output to the first output terminal. Therefore, if the connection is always illegal, the connection can be automatically changed so as to be normal.

As described above, according to the present invention, the first network management terminal means of the first terminal station has the identification number value data inserted from the first interface means to the first to fourth positions, and The wavelength-multiplexed value data inserted in the fifth position is received. As a result, the first network management terminal means determines in which direction the main signal lights of the first and second multiplexers of the first terminal station are transferred based on the received identification number value data. In addition to displaying on the monitor, the number of wavelength multiplexes is displayed on the monitor based on the received wavelength multiplex value data. Therefore, it is possible to know in which direction the main signal light of this system is transferred, and it is possible to know what the wavelength multiplexing number is.

As described above, according to the present invention, the first optical / electrical converting means of the first repeater station changes the supervisory channel frame optical signal demultiplexed by the first optical demultiplexing means to the corresponding supervisory channel frame. It is converted into an electric signal and sent to the wavelength division number detecting means. The wavelength multiplexing number detecting means detects the wavelength multiplexing value data inserted into at least the fifth position in the supervisory channel frame electric signal from the first optical / electrical converting means and sends it to the pumping light source controlling means. The pumping light source control means generates a control signal according to the wavelength multiplexing number based on the wavelength multiplexing value data from the wavelength multiplexing number detecting means and sends it to the optical amplifying means. The optical amplification means amplifies the optical signal including the supervisory channel frame optical signal and the first and second high-speed optical signals from the first optical separation means by the excitation optical signal of the intensity based on the control signal from the excitation light source control means. ing. As a result, the first relay station receives the first control signal according to the number of wavelength division multiplexing based on the wavelength division multiplexing value data inserted in the supervisory channel frame electric signal.
Monitoring channel frame optical signal sent from the terminal station of
Optical signals including the first and second high speed optical signals can be amplified to a predetermined level.

As described above, according to the present invention, the second network management terminal means of the first relay station receives the identification number value data inserted at the first to fourth positions from the directionality detecting means. receive. This allows the second relay of the first relay station to
On the basis of the received identification number value data, the network management terminal means displays the direction in which the main signal light is being transferred on its monitor. Therefore, it is possible to know in which direction the main signal light of this system is transferred.

As described above, according to the present invention, the third network management terminal means of the second terminal station has the identification number value data inserted from the second interface means to the first to fourth positions. And the wavelength-multiplexed value data inserted at the fifth position. As a result, the third network management terminal means determines from which direction the main signal light has been transferred to the third and fourth multiplexers of the second terminal station based on the received identification number value data. In addition to displaying on the monitor, the number of wavelength multiplexes is displayed on the monitor based on the received wavelength multiplex value data. Therefore, it is possible to know in which direction the main signal light of this system is transferred, and it is possible to know what the wavelength multiplexing number is.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a first embodiment of a terminal station to which a supervisory control device in an optical wavelength multiplexing transmission system of the present invention is applied, in combination with FIG.

FIG. 2 is a functional block diagram of a first embodiment of another terminal station to which the supervisory controller in the optical wavelength multiplexing transmission system of the present invention is applied, in combination with FIG.

FIG. 3 is a diagram showing a combined state of FIGS. 1 and 2.

FIG. 4 is a functional block diagram of a multiplexer including a transmitter used in the embodiments of FIGS. 1 and 2.

5 is a functional block diagram of a multiplexer including a receiving unit used in the embodiments of FIGS. 1 and 2. FIG.

6 is an operation explanatory diagram of an example of a connection destination information byte generation circuit used in the embodiment of FIG. 1 and a wavelength value / direction information generation circuit used in the embodiment of FIG. 9;

7 is a diagram of an example of an optical matrix switch used between a bidirectional optical WDM amplifier circuit and a multiplexer including a receiver used in the embodiment of FIG.

FIG. 8 is a diagram showing an example of an optical matrix switch used between a bidirectional optical WDM amplifier circuit and a multiplexer including a receiver used in the embodiment of FIG.

FIG. 9 is a functional block diagram of a second embodiment of the terminal station to which the supervisory control device in the optical wavelength division multiplexing transmission system of the present invention is applied, in combination with FIG. 10 and FIG.

FIG. 10 is a functional block diagram of an embodiment of a relay station to which the supervisory control device in the optical wavelength multiplexing transmission system of the present invention is applied, in combination with FIG. 9 and FIG.

11 is a functional block diagram of a second embodiment of another terminal station to which the supervisory control device in the optical wavelength multiplexing transmission system of the present invention is applied, in combination with FIG. 9 and FIG.

12 is a diagram showing a combined state of FIGS. 9, 10 and 11. FIG.

13 is a functional block diagram of a multiplexer including a transmitter used in the embodiments of FIGS. 9 and 11. FIG.

FIG. 14 is a functional block diagram of a multiplexer including a receiver used in the embodiments of FIGS. 9 and 11.

15 is an operation explanatory diagram of an example of a wavelength value / direction information generation circuit used in the embodiment of FIG.

FIG. 16 is a block diagram of an example of a conventional optical transmission system.

FIG. 17 is an explanatory diagram of an example showing a frame structure of an STM-1 frame signal.

[Explanation of symbols]

12, 28, 54-60, 126-132, 148-154, 234-240
Multiplexer 16, 24 Regeneration intermediate repeater 20 Linear intermediate repeater 62, 104, 156, 216 Bidirectional optical wavelength multiplexer 64, 108, 158, 218 Bidirectional optical wavelength multiplex amplifier circuit 66, 106, 160, 217 Bidirectional optical demultiplexing circuit 68, 84, 116, 120 Connection destination information detection circuit 70, 122, 166, 230 Monitoring control signal generation circuit 72, 92, 124, 168, 180, 232 Electrical / optical conversion circuit 76, 114, 170, 224 Monitor control IF circuit 78, 118 Connection destination information comparison circuit 80, 96, 110, 172, 186, 196, 206, 220 Optical / electrical conversion circuit 82, 112, 174, 198, 208, 222 Monitor control signal detection Circuits 86, 134, 176, 242 Network management terminal devices 88, 178 Multiplexing circuit 90 Overhead insertion circuit 94 Connection destination information byte generation circuit 98 Overhead detection circuit 100, 188 Separation circuit 102 Connection destination information byte detection circuit 162, 200, 210 , 226 Wavelength multiplex detection circuit 164, 202, 212, 228 Directional detection circuit 182 Wavelength value / direction information Forming circuit 184 Wavelength / direction management byte generating circuit 189 bidirectional linear intermediate repeater 190, 194 monitor control light separating circuit 192 bidirectional optical amplifier 204, 214 the excitation light source control circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04J 3/00 H04B 10/20 H04L 12/24 H04L 12/26

Claims (24)

(57) [Claims] 1. The first terminal station includes at least first and second terminals.
In the optical wavelength division multiplex transmission system having the first optical multiplexer, the first optical wavelength multiplexer, and the first network management terminal means. Receiving the low-speed optical signal, converting the received low-speed optical signal into a corresponding electric signal, and multiplexing the converted electric signals to form a high-speed signal; A high-speed signal is received from the multiplexing means, and the first identification number value data of the first multiplexing device that is the connection source and the third identification number of the third multiplexing device that is the connection destination of the multiplexing device. Value data is generated and output, and the generated third identification number value data of the received high speed signal is placed at a position indicating the connection source of the high speed signal that has received the generated first identification number value data. Insert each at the position showing the connection destination and insert the inserted high-speed signal A first transmission means for converting and outputting to a first high speed optical signal which is an optical signal having a corresponding first wavelength value, wherein the second multiplexing device has a plurality of predetermined low speed optical signals. Second multiplexing means for receiving a signal, converting each of the received low-speed optical signals into a corresponding electrical signal, and multiplexing the converted electrical signals to form a high-speed signal; and the second multiplexing means. From the second multiplexer, which is the connection source, and the fourth identification number value data, which is the fourth multiplexer to which the multiplexer is connected. Generate and output the generated second identification number value data at the position indicating the connection source of the received high-speed signal, and the generated fourth identification number value data at the connection destination of the received high-speed signal. A second optical signal having a second wavelength value corresponding to each of the inserted high-speed signals A second transmission means for converting into a high-speed optical signal and outputting the high-speed optical signal, wherein the first optical wavelength division multiplexer transmits the first high-speed optical signal from the first transmission means and the second transmission means. First wavelength multiplexing means for wavelength-multiplexing the second high-speed optical signal from the means, first and third identification number value data from the first transmitting means, and the second transmission Receiving the second and fourth identification number value data from the means, the first identification number value data indicating the received connection source at the first position, the third identification number value data indicating the received connection destination At the second position, the second identification number value data indicating the received connection source is inserted at the third position, and the fourth identification number value data indicating the received connection destination is inserted at the fourth position. The generated supervisory channel frame electrical signal is generated and output, and the generated supervisory channel frame electrical signal is processed. Third transmitting means for converting and outputting to a monitoring channel frame optical signal which is an optical signal having a first monitoring wavelength value, the monitoring channel frame optical signal from the third transmitting means and the first wavelength multiplexing Second wavelength multiplexing means for wavelength-multiplexing the high-speed optical signal from the converting means, and identification inserted in at least first to fourth positions in the supervisory channel frame electric signal from the third transmitting means. A first interface means for outputting number value data, wherein the first network management terminal means receives the identification number value data inserted at the first to fourth positions from the first interface means. A supervisory controller in an optical wavelength division multiplexing transmission system characterized by receiving. 2. The supervisory control device according to claim 1, wherein the first transmitting means is represented by a decimal number or a binary number output from the first multiplexing device.
And a first connection destination information byte generating means for generating third identification number value data, wherein the second transmitting means is expressed by a decimal number or a binary number output from the second multiplexing device. 2. A supervisory controller in an optical wavelength division multiplexing transmission system, comprising: second connection destination information byte generating means for generating the second and fourth identification number value data. 3. The optical controller according to claim 1, wherein the optical wavelength division multiplexing optical transmission system of the second terminal station is opposite to the optical wavelength division multiplexing optical transmission system of the first terminal station. Has at least a second optical wavelength multiplexer, the third and fourth multiplexers, and second network management terminal means, and the second optical wavelength multiplexer is the first optical wavelength multiplexer. First optical demultiplexing means for demultiplexing the optical signal from the second wavelength multiplexing means into a supervisory channel frame optical signal and an optical signal containing the first and second high-speed optical signals; and the first optical demultiplexing means. Second optical demultiplexing means for demultiplexing the first and second high-speed optical signals demultiplexed by the first and second high-speed optical signals, and demultiplexing by the first optical demultiplexing means. Convert the transmitted supervisory channel frame optical signal to the corresponding supervisory channel frame electrical signal. First optical / electrical converting means for converting, and a first optical / electrical converting means for outputting the identification number value data inserted at least at the first to fourth positions in the supervisory channel frame electric signal from the first optical / electrical converting means Optical interface, and the second network management terminal means receives from the second interface means the identification number value data inserted in the first to fourth positions. A supervisory control device in a wavelength division multiplexing transmission system. 4. The supervisory control device according to claim 3, wherein the second optical wavelength multiplexing device further includes first to first optical signals in the supervisory channel frame electrical signal from the first optical / electrical converting means. Connection destination information detecting means for detecting the identification number value data inserted at the position 4, the identification number value data inserted at the first position from the connection destination information detecting means, and the third multiplexing device. And the identification number value data inserted in the position indicating the connection source from the connection destination information detecting means, and the third number multiplexing and the identification number value data inserted in the second position from the connection destination information detecting means. The identification number value data inserted in the position indicating the connection destination from the device is compared with the third identification number value data of the multiplexing device, and if the comparison results in both, the first Match data, which Alternatively, when both do not match, the first mismatch data is output to the second interface means, and the identification number value data inserted into the third position from the connection destination information detecting means and the fourth number. Comparing the identification number value data inserted in the position indicating the connection source from the multiplexer, and the identification number value data inserted in the fourth position from the connection destination information detecting means with the 4 is compared with the fourth identification number value data of the multiplexing device by replacing the identification number value data inserted at the position indicating the connection destination from the multiplexing device of No. 4, and if both are matched by these comparisons, Is the second match data,
And a connection destination information comparing unit that outputs second mismatch data to the second interface unit when either or both do not match, the second interface unit including the connection destination information comparing unit. Control data in the optical wavelength division multiplexing transmission system, characterized in that the first match data or the first mismatch data and the second match data or the second mismatch data from apparatus. 5. The supervisory control device according to claim 4, wherein the third multiplexer converts the first high-speed optical signal from the second optical demultiplexing means into a corresponding electric signal, Extraction of identification number value data multiplexed at the position indicating the connection source and connection destination of the converted high-speed signal, and the identification number value data inserted at the position indicating the extracted connection source and the connection destination extracted The third identification number value data of the multiplexing device by replacing the identification number value data inserted at the position The multiplexer converts the second high-speed optical signal from the second optical demultiplexer into a corresponding electrical signal, and the multiplexed high-speed signal is identified at each of the positions indicating the connection source and connection destination. The number value data is extracted and the extracted connection source is shown. The identification number value data inserted in the position and the fourth identification number value data of the multiplexer obtained by replacing the extracted identification number value data inserted in the position indicating the connection destination are connected to the connection destination information comparing means. A supervisory control device in an optical wavelength multiplexing transmission system, characterized in that it has a second receiving means for outputting. 6. The supervisory control device according to claim 3, further comprising a relay station formed of an intermediate relay device between the first terminal station and the second terminal station. The first optical demultiplexing means receives the optical signal from the second wavelength multiplexing means through the intermediate repeater, and is a supervisory control device in an optical wavelength multiplexing transmission system. 7. The supervisory control device according to claim 3, wherein the optical wavelength division multiplexing transmission system of the second terminal station is further demultiplexed by the second optical demultiplexing means. Receiving the first high-speed optical signal and the second high-speed optical signal, and receiving the first match data or the first mismatch data and the second match data or the second mismatch data from the connection destination information comparing means. , When the first and second coincidence data are received, the received first high-speed optical signal
Output the received second high-speed optical signal to the second output terminal respectively, and when the first and / or second mismatch data is received, the received first high-speed optical signal A supervisory control device in an optical wavelength division multiplexing transmission system, comprising: an optical matrix switch means for outputting a signal to a second output terminal and the received second high-speed optical signal to a first output terminal, respectively. 8. The first terminal station includes at least first and second terminals.
In the optical wavelength division multiplex transmission system having the first optical multiplexer, the first optical wavelength multiplexer, and the first network management terminal means. Receiving the low-speed optical signal, converting the received low-speed optical signal into a corresponding electric signal, and multiplexing the converted electric signals to form a high-speed signal; Generates and outputs directional information composed of the first identification number value data of the multiplexing device and the third identification number value data of the third multiplexing device facing the multiplexing device, and 1st wavelength for generating and outputting 1st wavelength value data corresponding to the wavelength value of the light output from the multiplexer /
Direction management byte generating means, and first transmitting means for converting the high speed signal from the first multiplexing means into a first high speed optical signal which is an optical signal having a corresponding first wavelength value and outputting the first high speed optical signal. The second multiplexing device receives a plurality of predetermined low-speed optical signals, converts each of the received low-speed optical signals into a corresponding electric signal, and multiplexes the converted electric signals into a high-speed signal. From the second multiplexing means for forming a signal, the second identification number value data of the second multiplexing device and the fourth identification number value data of the fourth multiplexing device facing the multiplexing device. A second wavelength that generates and outputs the following directional information and that generates and outputs second wavelength value data corresponding to the wavelength value of the light output from the second multiplexer.
Direction management byte generating means, and second transmitting means for converting the high speed signal from the second multiplexing means into a second high speed optical signal which is an optical signal having a corresponding second wavelength value and outputting the second high speed optical signal. And the first optical wavelength division multiplexer wavelength-multiplexes the first high-speed optical signal from the first transmission means and the second high-speed optical signal from the second transmission means. First wavelength multiplexing means and first wavelength / direction management byte generation means for receiving first and third identification number value data and first wavelength value data, and second wavelength / direction management The second and fourth identification number value data and the second wavelength value data are received from the byte generating means, the number of different wavelengths is counted based on the received first and second wavelength value data, and based on the count. Wavelength multiplex value data is generated and the received first identification number value data is The location, the third identification number value data received the second
At the position, the received second identification number value data at the third position, the received fourth identification number value data at the fourth position, and the generated wavelength multiplex value data at the fifth position. To generate and output the supervisory channel frame electric signals respectively inserted into the supervising channel frame electric signals, and convert the generated supervisory channel frame electric signals into supervisory channel frame optical signals which are optical signals having the corresponding first supervisory wavelength values. Third transmitting means for outputting, and second wavelength multiplexing means for wavelength-multiplexing the supervisory channel frame optical signal from the third transmitting means and the high-speed optical signal from the first wavelength multiplexing means A first output of the identification number value data inserted into at least the first to fourth positions and the wavelength-multiplexed value data inserted into the fifth position in the supervisory channel frame electric signal from the third transmitting means, Interface And the first network management terminal means is inserted from the first interface means into the identification number value data and the fifth position inserted into the first to fourth positions. A supervisory control device in an optical wavelength division multiplexing transmission system, which receives wavelength division multiplexing value data. 9. The supervisory control device according to claim 8, wherein the first wavelength / direction management byte generating means is expressed by a decimal number or a binary number output from the first multiplexing device. A first wavelength value / direction information generation means for generating the first and third identification number value data and the first wavelength value data, and the second wavelength / direction management byte generation means for the second wavelength / direction management byte generation means.
Second wavelength value / direction information generating means for generating the second and fourth identification number value data and the second wavelength value data represented by a decimal number or a binary number output from the multiplexer of FIG. A supervisory control device in an optical wavelength division multiplexing transmission system, comprising: 10. The supervisory control apparatus according to claim 8 or 9, wherein the optical wavelength division multiplexing optical transmission of the first relay station connected to the optical wavelength division multiplexing optical transmission system of the first terminal station. The system has at least a linear intermediate repeater, and the linear intermediate repeater transmits the optical signal from the second wavelength multiplexing means to a supervisory channel frame optical signal and a supervisory channel frame optical signal. First optical demultiplexing means for demultiplexing into an optical signal including a high-speed optical signal, and first for converting the supervisory channel frame optical signal demultiplexed by the first optical demultiplexing means into a corresponding supervisory channel frame electrical signal Optical / electrical conversion means, and wavelength multiplex number detection means for detecting wavelength multiplex value data inserted in at least a fifth position in the supervisory channel frame electric signal from the first optical / electrical conversion means, Directionality detecting means for detecting identification number value data inserted into at least first to fourth positions in the supervisory channel frame electric signal from the first optical / electrical converting means; Pumping light source control means for generating a control signal according to the wavelength multiplexing number based on the wavelength multiplexing value data, and monitoring from the first light separating means by the pumping light signal of intensity based on the control signal from the pumping light source control means A supervisory control device in an optical wavelength division multiplexing transmission system, comprising: a channel frame optical signal; and an optical amplification means for amplifying an optical signal including the first and second high-speed optical signals. 11. The supervisory control device according to claim 10, wherein the optical wavelength division multiplexing optical transmission system of the first relay station further includes second network management terminal means, and the second network management terminal. The means receives the identification number value data inserted in the first to fourth positions from the direction detecting means, and is a supervisory controller in the optical wavelength division multiplexing transmission system. 12. The monitor control device according to claim 10, wherein the second terminal is connected to the optical wavelength multiplexing optical transmission system of the first relay station and faces the first terminal station. The optical wavelength multiplexing optical transmission system of the station has at least a second optical wavelength multiplexing device, the third and fourth multiplexing devices, and third network management terminal means, The optical wavelength multiplexing device includes second optical demultiplexing means for demultiplexing the optical signal from the optical amplification means into a supervisory channel frame optical signal and an optical signal including first and second high-speed optical signals, and the second optical demultiplexing means. Second optical / electrical converting means for converting the optical signal of the supervisory channel frame demultiplexed by the second optical demultiplexing means into a corresponding electrical signal of the supervisory channel frame, and the supervisory channel frame from the second optical / electrical converting means At least the first in the electrical signal A second interface unit for outputting the identification number value data inserted in the first to fourth positions and the wavelength multiplex value data inserted in the fifth position, and the third network management terminal unit, In an optical wavelength division multiplexing transmission system, characterized in that the identification number value data inserted in the first to fourth positions and the wavelength division multiplexing value data inserted in the fifth position are received from the second interface means. Monitoring and control equipment. 13. The supervisory control device according to claim 12, wherein the second optical wavelength division multiplexer further includes the second optical wavelength division multiplexer.
The third and second optical demultiplexing means for demultiplexing the first and second high-speed optical signals demultiplexed by the optical demultiplexing means into a first high-speed optical signal and a second high-speed optical signal. From the third optical demultiplexing means to the first multiplexer.
Receiving the high-speed optical signal from the third multiplexer,
2. A supervisory controller in an optical wavelength division multiplexing transmission system, wherein the second high-speed optical signal is received from the optical demultiplexing means. 14. The supervisory control device according to claim 12, wherein the second optical demultiplexing means of the second terminal station does not go through the first relay station, but the first terminal station. A supervisory controller in an optical wavelength multiplexing transmission system, which receives an optical signal from the second wavelength multiplexing means of a station. 15. An optical wavelength multiplexing transmission system having at least first and second multiplexers, a first optical wavelength multiplexer, and first network management terminal means in a first terminal station. In the supervisory control device, the first multiplexing device receives a plurality of predetermined low speed optical signals, converts each of the received low speed optical signals into a corresponding electric signal, and multiplexes each of the converted electric signals. A first multiplexing means for forming a high-speed signal, and a first wavelength / wavelength for generating and outputting first wavelength value data corresponding to the wavelength value of the light output from the first multiplexer.
Direction management byte generating means, and first transmitting means for converting the high speed signal from the first multiplexing means into a first high speed optical signal which is an optical signal having a corresponding first wavelength value and outputting the first high speed optical signal. The second multiplexing device receives a plurality of predetermined low-speed optical signals, converts each of the received low-speed optical signals into a corresponding electric signal, and multiplexes the converted electric signals into a high-speed signal. Second multiplexing means for forming a signal, and a second wavelength for generating and outputting second wavelength value data corresponding to the wavelength value of the light output from the second multiplexing device.
Direction management byte generating means, and second transmitting means for converting the high speed signal from the second multiplexing means into a second high speed optical signal which is an optical signal having a corresponding second wavelength value and outputting the second high speed optical signal. And the first optical wavelength division multiplexer wavelength-multiplexes the first high-speed optical signal from the first transmission means and the second high-speed optical signal from the second transmission means. First wavelength multiplexing means, first wavelength value data from the first wavelength / direction management byte generation means, and second wavelength value data from the second wavelength / direction management byte generation means. Receiving, counting the number of different wavelengths based on the received first and second wavelength value data, generating wavelength multiplexed value data based on the count, and generating the generated wavelength multiplexed value data at the first position, respectively. Generates and outputs a supervisory channel frame electrical signal that is inserted,
Third transmitting means for converting the generated supervisory channel frame electric signal to a supervisory channel frame optical signal which is an optical signal having a corresponding first supervisory wavelength value and outputting the same, and monitoring from the third transmitting means. Second wavelength multiplexing means for wavelength-multiplexing the channel frame optical signal and the high-speed optical signal from the first wavelength multiplexing means; and at least the supervisory channel frame electrical signal from the third transmitting means. And a first interface means for outputting the wavelength-multiplexed value data inserted in the first position, wherein the first network management terminal means is inserted in the first position from the first interface means. A supervisory control device in an optical wavelength division multiplexing transmission system, which receives wavelength division multiplexing value data. 16. The supervisory control device according to claim 15, wherein the first wavelength / direction management byte generation means is expressed by a decimal number or a binary number output from the first multiplexing device. First to generate first wavelength value data
Wavelength value / direction information generating means, and the second wavelength / direction management byte generating means includes:
Optical wavelength division multiplexing transmission system including second wavelength value / direction information generating means for generating the second wavelength value data represented by a decimal number or a binary number output from the multiplexer of FIG. And control equipment in. 17. The supervisory control device according to claim 15 or 16, wherein the optical wavelength-multiplexed optical transmission of the first relay station connected to the optical wavelength-multiplexed optical transmission system of the first terminal station. The system has at least a linear intermediate repeater, and the linear intermediate repeater transmits the optical signal from the second wavelength multiplexing means to a supervisory channel frame optical signal and a supervisory channel frame optical signal. First optical demultiplexing means for demultiplexing into an optical signal including a high-speed optical signal, and first for converting the supervisory channel frame optical signal demultiplexed by the first optical demultiplexing means into a corresponding supervisory channel frame electrical signal Optical / electrical conversion means, and wavelength multiplex number detection means for detecting the wavelength multiplex value data inserted at least at the first position in the supervisory channel frame electric signal from the first optical / electrical conversion means, The pumping light source control means for generating a control signal according to the wavelength multiplexing number based on the wavelength multiplexing value data from the wavelength multiplexing number detecting means, and the pumping light signal of the intensity based on the control signal from the pumping light source control means, 1. A supervisory controller in an optical wavelength division multiplexing transmission system, comprising: a supervisory channel frame optical signal from an optical demultiplexing unit 1; . 18. The supervisory control device according to claim 17, wherein an optical wavelength of a second terminal station connected to the optical wavelength division multiplexing optical transmission system of the first relay station and facing the first terminal station. The multiplexed optical transmission system includes at least a second optical wavelength multiplexer, the third and fourth multiplexers, and a second optical wavelength multiplexer.
Network management terminal means of the second optical wavelength division multiplexer, wherein the second optical wavelength division multiplexer transmits the optical signal from the optical amplifier means to a monitoring channel frame optical signal and an optical signal including first and second high-speed optical signals. Second optical demultiplexing means for demultiplexing the optical signal into two, and second optical / electrical converting means for converting the supervisory channel frame optical signal demultiplexed by the second optical demultiplexing means into a corresponding supervisory channel frame electrical signal Second interface means for outputting wavelength-multiplexed value data inserted into at least the first position in the supervisory channel frame electric signal from the second optical / electrical converting means, the second network management The monitor control device in the optical wavelength division multiplexing transmission system, wherein the terminal means receives the wavelength division multiplexed data inserted at the first position from the second interface means. 19. The supervisory control device according to claim 18, wherein the second optical wavelength division multiplexer further includes the second optical wavelength division multiplexer.
The third and second optical demultiplexing means for demultiplexing the first and second high-speed optical signals demultiplexed by the optical demultiplexing means into a first high-speed optical signal and a second high-speed optical signal. From the third optical demultiplexing means to the first multiplexer.
Receiving the high-speed optical signal from the third multiplexer,
2. A supervisory controller in an optical wavelength division multiplexing transmission system, wherein the second high-speed optical signal is received from the optical demultiplexing means. 20. The supervisory control device according to claim 18, wherein the second optical demultiplexing means of the second terminal station does not go through the first relay station, but the first terminal station. A supervisory controller in an optical wavelength multiplexing transmission system, which receives an optical signal from the second wavelength multiplexing means of a station. 21. An optical wavelength division multiplexing transmission system having at least first and second multiplexers, a first optical wavelength division multiplexer, and first network management terminal means in a first terminal station. In the supervisory control device, the first multiplexing device receives a plurality of predetermined low speed optical signals, converts each of the received low speed optical signals into a corresponding electric signal, and multiplexes each of the converted electric signals. First multiplexing means for forming a high speed signal, first identification number value data of the first multiplexing device, and third identification number value data of a third multiplexing device facing the multiplexing device For generating and outputting directional information consisting of
Wavelength / direction management byte generating means for converting the high-speed signal from the first multiplexing means into a first high-speed optical signal which is an optical signal having a corresponding first wavelength value, and outputs the first high-speed optical signal. A second multiplexer that receives a plurality of predetermined low-speed optical signals, converts the received low-speed optical signals into corresponding electric signals, and multiplexes the converted electric signals. Second multiplexing means for converting the multiplex device to a high-speed signal, second identification number value data of the second multiplex device, and fourth identification number of the fourth multiplex device opposite to the multiplex device. Second to generate and output directionality information consisting of value data
Wavelength / direction management byte generating means for converting the high speed signal from the second multiplexing means into a second high speed optical signal which is an optical signal having a corresponding second wavelength value, and outputs the second high speed optical signal. A first optical wavelength division multiplexer that transmits the first high-speed optical signal from the first transmission means and the second high-speed optical signal from the second transmission means. First wavelength multiplexing means for multiplexing, first and third identification number value data from the first wavelength / direction management byte generation means, and from the second wavelength / direction management byte generation means Received second and fourth identification number value data, received the received first identification number value data at a first position, and received the received third identification number value data at a second position. The second identification number value data at the third position,
A first monitoring wavelength value corresponding to the generated monitoring channel frame electric signal is generated and output as a monitoring channel frame electric signal by inserting the received fourth identification number value data into the fourth position. Third transmitting means for converting into a monitoring channel frame optical signal which is an optical signal having the following, and outputting the monitoring channel frame optical signal from the third transmitting means and the high-speed light from the first wavelength multiplexing means. Second wavelength multiplexing means for wavelength-multiplexing the signal and the identification number value data inserted into at least first to fourth positions in the supervisory channel frame electric signal from the third transmitting means. A first interface means, and the first network management terminal means receives the identification number value data inserted in the first to fourth positions from the first interface means. Rukoto supervisory control device in the optical wavelength multiplex transmission system according to claim. 22. The supervisory control device according to claim 21, wherein the first wavelength / direction management byte generation means is expressed by a decimal number or a binary number output from the first multiplexing device. It includes a first wavelength value / direction information generating means for generating first and third identification number value data, and the second wavelength / direction management byte generating means includes the second wavelength / direction management byte generating means.
Optical wavelength including a second wavelength value / direction information generating means for generating the second and fourth identification number value data represented by a decimal number or a binary number output from the multiplexer of FIG. A supervisory control device in a multiplexed transmission system. 23. The supervisory control apparatus according to claim 21 or 22, wherein the optical wavelength-multiplexed optical transmission of the first relay station connected to the optical wavelength-multiplexed optical transmission system of the first terminal station. The system has at least a linear intermediate repeater, and the linear intermediate repeater transmits the optical signal from the second wavelength multiplexing means to a supervisory channel frame optical signal and a supervisory channel frame optical signal. First optical demultiplexing means for demultiplexing into an optical signal including a high-speed optical signal, and first for converting the supervisory channel frame optical signal demultiplexed by the first optical demultiplexing means into a corresponding supervisory channel frame electrical signal And an directional detector for detecting the identification number value data inserted at least at the first to fourth positions in the monitoring channel frame electrical signal from the first optical / electrical converting means. A supervisory control device in an optical wavelength division multiplexing transmission system, comprising: 24. The supervisory control apparatus according to claim 23, wherein the optical wavelength division multiplexing optical transmission system of the first relay station further includes second network management terminal means, and the second network management terminal. The means receives the identification number value data inserted in the first to fourth positions from the direction detecting means, and is a supervisory controller in the optical wavelength division multiplexing transmission system.