KR0134925B1 - An optic multiplexer - Google Patents

Abstract

The present invention relates to an optical multiplexing device, and more particularly, to an optical multiplexing device that enables the optical multiplexing device to be used as a repeater when a bypass route is formed between two station devices.

The object of the present invention is to control the multiplexing and demultiplexing, and to control the multiplexing mode or the relay mode selection signal, the relay signal receiving means for receiving the relayed optical signal, and the selection signal generated by the control means Selects a signal output from the relay signal receiving means and the low speed multiplexing means and applies it to the optical transmitting means, and selects an output mode of the fast demultiplexing signal received according to the selection signal generated by the control means And a light receiving mode selecting means for applying the received optical signal to the selected mode, and a boosting signal transmitting means for transmitting the relay signal obtained from the light receiving mode selecting means to the other station apparatus.

Description

Photomultiplexer

1 is a block diagram of a conventional optical multiplexing device.

2 is a configuration of a relay line according to the prior art.

3 is a block diagram of an optical multiplexing device according to the present invention.

4 is a configuration of a relay line according to the present invention.

＊ Explanation of symbols for main parts of drawing

101: relay signal receiver, 102: optical transmission mode selection unit,

106: light receiving mode selector, 105: relay signal transmitter

The present invention relates to an optical multiplexing device, and more particularly, to an optical multiplexing device that enables the optical multiplexing device to be used as a repeater when a bypass route is formed between two station devices.

FIG. 1 is a block diagram of a conventional optical multiplexing apparatus. As shown in FIG. 1, a low speed multiplexer 1 including first to fourth slow multiplexers 1a to 1d for multiplexing four 2Mbps signals into one 8Mbps signal is shown. ), A high-speed multiplexing and optical transmitter 2 for high-speed multiplexing four 8-Mbps signals output from the low-speed multiplexing unit 1 into one 34-Mbps signal, and four 8-Mbps high-speed multiplexing signals received at 34 Mbps. First to fourth demultiplexing the high-speed demultiplexing and the light receiving unit 3 to demultiplex the signal into four signals, and the four 8Mbps signals demultiplexed by the fast demultiplexing and the light receiving unit 3 into four 2Mbps low-speed signals. It consists of a low speed demultiplexer 4 which consists of demultiplexers 4a-4d, and the control part 5 which controls the said multiplexing and demultiplexing.

The operation of the conventional optical multiplexing device configured as described above will be described with reference to FIG. 2.

First, the first to fourth low speed multiplexers 1a to 1d in the low speed multiplexer 1 multiplex the low speed 2Mbps signals received from the outside into 8Mbps signals, respectively, under the control of the controller 5. And it is transmitted to the optical transmitter (2).

The high speed multiplexing and optical transmitter 2 multiplexes four input 8 Mbps signals at a high speed of 34 Mbps and transmits them as optical signals.

Meanwhile, the high speed demultiplexing and light receiving unit 3 converts the received high speed multiplexed optical signal into an electrical signal, demultiplexes into four 8 Mbps signals and inputs them to the low speed demultiplexing unit 4.

The low speed demultiplexer 4 performs the low speed demultiplexing of the four 8 Mbps signals input to the subscriber through the first to fourth low speed demultiplexers 4a to 4d with a 2 Mbps signal.

At this time, the transmitted or received optical signal is connected to the opposing optical multiplexing device as shown in FIG. 2. If the distance between the first and second end station devices 6, 8 exceeds the maximum transmittable distance, the intermediate point is The optical signal is used to relay the optical signal.

That is, the optical signal transmitted from the first end station apparatus 6 is transmitted to the second end station apparatus 8 through the repeater 7.

In addition, the optical signal transmitted from the second end station apparatus 8 is transmitted to the first end station apparatus 6 as described above through the repeater 7.

At this time, the repeater converts the received optical signal into an electrical signal and converts the optical signal back into the same optical signal with the original signal strength.

However, such a conventional optical multiplexing device can be used only as a single station device, and there is a problem in that a separate dedicated repeater must be used when transmitting and receiving an optical signal with another terminal device having a maximum transmission distance.

Accordingly, the present invention is to solve the above problems of the conventional optical multiplexing device, and an object of the present invention is to provide an optical multiplexing device so that the optical multiplexing device can be used as a relay when a bypass route is formed between two station devices. have.

Technical means for achieving the object of the present invention is to control the multiplexing and demultiplexing, the control means for generating an optical multiplexing mode or relay mode selection signal, the relay signal receiving means for receiving the relayed optical signal, and Optical transmission mode selection means for selecting the signal output from the relay signal receiving means and the low speed multiplexing means according to the selection signal generated by the control means to apply to the optical transmission means and received according to the selection signal generated by the control means Optical reception mode selecting means for selecting an output mode of the fast demultiplexing signal and applying the received optical signal to the selected mode; and relay signal transmitting means for transmitting the relay signal obtained from the optical reception mode selecting means to the other station apparatus. Lose.

Hereinafter, described in detail with reference to the accompanying drawings of the present invention.

3 is a block diagram of an optical multiplexing apparatus according to the present invention. As shown in FIG. 3, a low-speed multiplexing unit including first to fourth low-speed multiplexers 100a to 100d multiplexes four 2Mbps low-speed signals into one 8Mbps signal. 100 and a light transmission mode or a relay mode according to the outputs of the relay signal receiver 101 for receiving the relayed optical signal and the relay signal receiver 101 and the slow multiplexer 100, and the selected optical signal. An optical transmission mode selector 102 for outputting a signal, a high speed multiplexing and optical transmitter 103 for multiplexing four 8 Mbps signals outputted from the optical transmission mode selector 102 into a 34 Mbps signal and transmitting them as optical signals; A high speed demultiplexing and light receiving unit 104 for demultiplexing the received high speed optical signal into four 8 Mbps signals, and an optical mode for selecting an output mode of a signal received by the high speed demultiplexing and light receiving unit 104 according to a usage mode Receiving mode A selector 106, a relay signal transmitter 105 for transmitting the relay signal output from the optical reception mode selector 106 to another station apparatus, and four output signals from the optical reception mode selector 106; A low speed demultiplexer 107 comprising first to fourth low speed demultiplexers 107a to 107d for demultiplexing an 8 Mbps signal into a 2 Mbps signal and outputting the same, and a control unit 108 for controlling the multiplexing and demultiplexing. .

First, the controller 108 determines the optical transmission mode and controls the optical transmission mode selection unit 102.

In this state, the low speed 2 Mbps signal obtained from the subscriber is multiplexed at 8 Mbps by the first to fourth low speed multiplexers 100a-100d in the low speed multiplexer 100 to the optical transmission mode selector 102. Will be sent.

In addition, the relay signal receiving unit 101 receives the optical signal transmitted for relaying from the other station apparatus and inputs it to the optical receiving mode selection unit 102 described above.

Accordingly, the optical transmission mode selector 102 selects a transmission mode under the control of the controller 108 and selects and outputs two signals.

That is, when the mode is selected as the optical multiplexing device, four 8 Mbps signals obtained by the low speed multiplexer 100 are transmitted to the high speed multiplexer and the optical transmitter 103, and when the relay mode is selected, the relay signal receiver ( The relay signal obtained at 101 is selected and transmitted to the high speed multiplexing and optical transmitter 103 described above.

Then, the high speed multiplexing and optical transmitter 103 multiplexes the input signal into a 34 Mbps high speed optical signal and transmits the optical signal to the other station apparatus.

On the other hand, under the control of the controller 108, the light receiving mode selection unit 106 also selects the output mode of the received signal.

In this state, the high speed demultiplexing and light receiving unit 104 receives the 34 Mbps high speed optical signal transmitted from the other station apparatus and demultiplexes the 8 Mbps signal to the optical receiving mode selection unit 106.

Accordingly, the light receiving mode selection unit 106 selects and outputs an output mode of the received signal input under the control of the controller 108.

That is, when the optical multiplexing mode is selected, four input 8 Mbps signals are transmitted to the low speed demultiplexing unit 107. When the relay mode is selected, four 8 Mbps signals are input to the relay signal transmitting unit 105. Done.

Accordingly, the relay signal transmitter 105 converts four input 8 Mbps signals into 34 Mbps high speed optical signals and transmits them to the other station apparatus.

In addition, the low speed demultiplexer 107 demultiplexes the four 8 Mbps signals input to the first to fourth low speed demultiplexers 107a-107d into low speed signals of 2 Mbps, respectively, and transmits them to the connected subscribers.

4 is a diagram illustrating the configuration of a relay line when the optical multiplexing device is used as the optical multiplexing device and the repeater as described above.

As shown in the drawing, the signal transmitted from the first station apparatus 109 is received by the second station apparatus 110 to determine whether it is a received signal or a relay signal, and if it is a received signal, it is processed and transmitted to the subscriber. do.

In addition, if the relay signal is received, the received signal is transmitted to the other station apparatus, and the third station apparatus 111 also receives the transmission signal and operates in the same manner as the second station apparatus 110, and similarly, the fourth station apparatus 112 ) Also transmits or receives the received signal according to the selection of the optical multiplexing device and the relay mode.

The signal transmitted from the fourth end station apparatus 112 is also transmitted to the first end station apparatus 109 through the third and second end station apparatuses 111 and 110 sequentially.

As described above, the present invention has the effect that a single optical multiplexing device can use the optical multiplexing mode and the relay mode, so that the signal can be transmitted without a separate dedicated repeater when transmitting a signal to a station apparatus exceeding the maximum transmission distance. .

Claims (1)

An optical multiplexing device including a low speed multiplexer, a low speed demultiplexer, a high speed multiplexer and an optical transmitter, and a high speed demultiplexer and a light receiver, wherein the multiplexing and demultiplexing is controlled, and an optical multiplexing mode or a relay mode selection signal is generated. Relay signal receiving means for receiving an optical signal relayed in connection with a control means, an optical transmission mode selection means, and connected between a low speed multiplexer, a high speed multiplexing and an optical transmitter, according to the selection signal generated by the control means An optical transmission mode selecting means for selecting a signal output from the signal receiving means and the low speed multiplexing means and applying it to the optical transmitting means, and a selection signal generated between the low speed demultiplexing unit and the high speed demultiplexing and light receiving unit to generate the signal; To select the output mode of the received fast demultiplexed signal according to the And a relay signal transmitting means connected to the light receiving mode selecting means and transmitting the relay signal obtained from the light receiving mode selecting means to the other station apparatus.