JP2003134062A - System, method and program for managing optical transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical transmission line management system capable of excluding factors such as lowering of spatial resolution and sampling resolution to lower the precision of measurement to the utmost. SOLUTION: The optical transmission line management system 10 manages an optical transmission line 31 by using measuring instruments 201, 211 that are arranged at test stations 20, 21 installed on the optical transmission line 31, insert test light to the optical transmission line 31 and measure backward scattered light of the inserted test light, and is provided with: a measurement instruction transmitting part 101 that transmits a measurement instruction to the measuring instruments 201, 211 to insert the test light of conditions corresponding to a half length of the optical transmission line 31; a measurement result receiving part 102 that receives data based on the backward scattered light measured by the measuring instruments 201, 211 on the basis of the transmitted measurement instruction; and a fault judging part 103 that judges whether a fault is caused on the optical transmission line 31 on the basis of the received data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical transmission line management system, an optical transmission line management method, an optical transmission line management program, and a computer-readable recording medium.

[0002]

2. Description of the Related Art As a technique for measuring a failure of an optical transmission line, a test light is inserted into an optical fiber forming the optical transmission line,
OTDR (Optical) for measuring backscattered light
TimeDomain Reflectometer)
Some use. In this case, in order to measure the obstacle of the long-distance optical transmission line, the measurement pulse width of the test light and the measurement distance range must be widened.

[0003]

There is a technical problem to be solved such that the spatial resolution and the sampling resolution are lowered when the measurement pulse width and the measurement distance range of the test light are widened.

Therefore, according to the present invention, when measuring a failure of an optical transmission line, an optical transmission line management system and an optical transmission line can be eliminated in which the factors that deteriorate the measurement accuracy such as the reduction of the spatial resolution and the sampling resolution can be eliminated as much as possible. An object is to provide a path management method and an optical transmission path management program.

[0005]

The optical transmission line management system of the present invention is arranged at one end station and the other end station installed at one end and the other end of the optical transmission line, respectively, and supplies test light to the optical transmission line. An optical transmission line is managed by using a measuring device that inserts and measures the backscattered light of the inserted test light, and the optical transmission line is composed of a first section and a second section from one end side. For the first measuring device installed at the one end station, the test light of the condition corresponding to the length of the first section of the optical transmission line is supplied to the second measuring device installed at the other end station. To the measuring device, a measurement instruction transmitting unit that transmits a measurement instruction so that the test light of the condition corresponding to the length of the second section of the optical transmission line is inserted and measured, and the transmitted measurement instruction. Backscatter measured by the first measuring device and the second measuring device based on the measurement instruction. Comprises a measurement result receiving means for receiving data based on, on the basis of the received data, and fault judgment means for judging whether the optical transmission path has failed, the.

The optical transmission line management method of the present invention is arranged such that one end station and the other end station are respectively installed at one end and the other end of the optical transmission line, and the test light is inserted into the optical transmission line and the inserted test is performed. The optical transmission line is managed by using a measuring device that measures the backscattered light of the light.
And a second section, and for the first measuring device installed at one end station, a test light of a condition corresponding to the length of the first section of the optical transmission line, A measurement instruction is sent to the second measuring device installed at the other end station so that the test light of the condition corresponding to the length of the second section of the optical transmission line is inserted and measured. Based on the transmitted measurement instruction and the measurement instruction transmitted,
A measurement result receiving step of receiving data based on the backscattered light measured by the first measuring device and the second measuring device;
A failure determination step of determining whether or not a failure has occurred in the optical transmission line based on the received data.

The optical transmission line management program of the present invention is arranged at one end station and the other end station respectively installed at one end and the other end of the optical transmission line, inserts test light into the optical transmission line, and inserts the test light. Using a measuring device that measures the backscattered light of the light,
An optical transmission line is managed, and the optical transmission line is composed of a first section and a second section from one end side,
For the first measuring device installed at the one end station of the computer, the test light of the condition corresponding to the length of the first section of the optical transmission line is supplied to the second measuring station installed at the other end station. To the measuring device, the measuring instruction transmitting means for transmitting the measuring instruction so as to insert and measure the test light of the condition corresponding to the length of the second section of the optical transmission line, and the transmitting means. The measurement result receiving means for receiving data based on the backscattered light measured by the first measuring device and the second measuring device based on the measured instruction, and the optical transmission path is damaged based on the received data. It functions as a failure determination means for determining whether or not it has occurred.

According to the present invention, since the measurement instruction is transmitted so as to insert and measure the test light of the condition corresponding to each length obtained by dividing the optical transmission line into two sections, the measurement instruction is received. The measuring device can insert the test light of the condition corresponding to the length of each section of the optical transmission line and measure the state of the optical transmission line. The data based on the backscattered light of the optical transmission line measured based on this measurement instruction is received, and it is determined based on the received data whether or not a failure has occurred in the optical transmission line. It is possible to determine whether or not a failure has occurred in the optical transmission line under the conditions corresponding to the lengths of the respective sections. Under the conditions corresponding to the length of each section of the optical transmission line, measure the backscattered light of the optical transmission line, and use the data based on the measured backscattered light to determine whether a fault has occurred in the optical transmission line. Since it can be determined whether or not the spatial resolution and the sampling resolution are reduced as much as possible, for example, as compared with the case where the measurement is performed under the condition corresponding to the entire length of the optical transmission line.

Further, in the optical transmission line management system of the present invention, the optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device respectively correspond to the plurality of optical fibers. And selectively inserting the test light, and the measurement instruction transmitting means is provided to the second measuring device.
If the test light is not inserted from the first measuring device,
You may make it transmit a measurement instruction | indication so that a test light may be inserted with respect to the said optical fiber.

Further, in the optical transmission line management method of the present invention,
The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, In the measurement instruction transmitting step, when the test light is not inserted from the first measuring equipment, the measurement instruction is transmitted to the second measuring equipment so as to insert the test light into the optical fiber.

In the optical transmission line management program of the present invention, the optical transmission line includes a plurality of optical fibers,
The first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, and the measurement instructing means sets the first measuring device to the second measuring device with respect to the first measuring device. When the test light has not been inserted from the measuring device, the measurement instruction is transmitted to insert the test light into the optical fiber.

Since it is possible to avoid inserting the test light from both ends of the optical fiber constituting the optical transmission line at the same time, the accuracy of the data based on the backscattered light measured by the first measuring device and the second measuring device is improved. Therefore, it is possible to more accurately measure whether or not a failure has occurred in the optical transmission line.

Further, in the optical transmission line management system of the present invention, the optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device respectively correspond to the plurality of optical fibers. And selectively inserting the test light, the measurement instructing means for the first measuring device to the second measuring device.
When the test light is inserted from the measuring equipment of, the test light shall be sent to the other optical fibers of the optical fibers that make up the optical transmission line other than the one in which the test light is inserted. Send measurement instructions to insert.

In the optical transmission line management method of the present invention,
The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, In the measurement instruction transmitting step, when the test light is inserted from the first measurement device into the second measurement device, the test light is inserted into the optical fibers forming the optical transmission line. A measurement instruction is transmitted to insert the test light into another optical fiber other than the one optical fiber.

Further, in the optical transmission line management program of the present invention, the optical transmission line includes a plurality of optical fibers,
The first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, and the measurement instructing means sets the first measuring device to the second measuring device with respect to the first measuring device. When the test light is inserted from the measuring equipment of, the test light shall be sent to the other optical fibers of the optical fibers that make up the optical transmission line other than the one in which the test light is inserted. Send measurement instructions to insert.

Since it is possible to avoid inserting the test light from both ends of the optical fiber constituting the optical transmission path at the same time, the accuracy of the data based on the backscattered light measured by the first measuring device and the second measuring device is improved. At the same time, since the first measuring device and the second measuring device can measure different optical fibers, the operating efficiency of the first measuring device and the second measuring device is improved.

Further, in the optical transmission line management system of the present invention, the optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device respectively correspond to the plurality of optical fibers. And selectively inserting the test light, and the respective measurement instructions transmitted by the measurement instruction means to the first measurement device and the second measurement device have a predetermined priority order. The measurement instruction means inserts test light into the first measuring device or the second measuring device from the first measuring device or the second measuring device which is installed on the opposite side with the optical fiber interposed therebetween. If so, the measurement instruction is transmitted to insert the test light into the optical fiber according to the priority order.

In the optical transmission line management method of the present invention,
The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, The respective measurement instructions to be transmitted to the first measurement device and the second measurement device have priorities set in advance, and in the measurement instruction transmission step, the first measurement device or the second measurement device is selected. On the other hand, when the test light is inserted from the first measurement device or the second measurement device installed on the opposite sides of the optical fiber, the test light is transmitted to the optical fiber according to the priority order. Send measurement instructions to insert.

Further, in the optical transmission line management program of the present invention, the optical transmission line includes a plurality of optical fibers,
The first measuring device and the second measuring device selectively insert the test light into each of the plurality of optical fibers, and the measurement instruction means has the first measuring device and the second measuring device. Each measurement instruction to be transmitted to the equipment has a predetermined priority order, and the measurement instruction means is provided on the opposite side of the first measurement equipment or the second measurement equipment with the optical fiber interposed therebetween. When the test light is inserted from the installed first measurement device or second measurement device,
A measurement instruction is transmitted to insert the test light into the optical fiber according to the priority order.

Since the first measuring device and the second measuring device insert the test light into the optical fiber according to the predetermined priority order, for example, even if a measurement instruction with a high priority order is transmitted later, If the priority of the measuring device on the opposite side of the fiber is lower, it can be interrupted, and measurement can be performed while avoiding simultaneous insertion of test light from both ends of the optical fiber forming the optical transmission line. Therefore, the accuracy of the data based on the backscattered light measured by the first measurement device and the second measurement device is improved, and the operation rates of the first measurement device and the second measurement device are improved.

The optical transmission line management system of the present invention has a first terminal station and a second terminal station installed at one end and the other end of the optical transmission path, and one end of which is connected to the second terminal station. The test light is inserted into each of the third terminal stations arranged at the other end of the other optical transmission line, and the test light is inserted into the optical transmission line and the other optical transmission line, and the backscattered light of the inserted test light is measured. A measuring device is used to manage the optical transmission line and the other optical transmission line. The optical transmission line is composed of a first section and a second section from one end side, and the other optical transmission path is It is composed of a third section and a fourth section from one end side, and corresponds to the length of the first section of the optical transmission line for the first measuring device installed in the first terminal station. The measurement instruction is given to the third terminal to insert the test light under the specified conditions into the optical transmission line for measurement. For the measuring device of No. 3, the measurement instruction is given so that the test light of the condition corresponding to the length of the fourth section of the other optical transmission line is inserted into the other optical transmission line to perform the measurement. For the second measuring device installed in the station, if the first measuring device does not insert the test light, the test light of the condition corresponding to the length of the second section of the optical transmission line is used. To the optical transmission line, and when the test light is not inserted by the third measuring device, the test light of the condition corresponding to the length of the third section of the other optical transmission line is supplied to the other optical transmission line, respectively. Data based on the backscattered light measured by the first measuring device and the second measuring device based on the measurement instruction transmitting means for transmitting the measurement instruction to insert and measure, and the transmitted measurement instruction. Based on the received data, the optical transmission line and other optical transmission lines are disabled. There comprises a failure determining means for determining whether or not the generation of an.

According to the optical transmission line management method of the present invention, one end is connected to the first terminal station and the second terminal station respectively installed at one end and the other end of the optical transmission line, and one end is connected to the second terminal station. The test light is inserted into each of the third terminal stations arranged at the other end of the other optical transmission line, and the test light is inserted into the optical transmission line and the other optical transmission line, and the backscattered light of the inserted test light is measured. A measuring device is used to manage the optical transmission line and the other optical transmission line. The optical transmission line is composed of a first section and a second section from one end side, and the other optical transmission path is 3rd from one end
And the fourth section. For the first measuring device installed at the first terminal station, the test light of the condition corresponding to the length of the first section of the optical transmission line is used. The measurement instruction to insert into the optical transmission line for measurement, and for the third measuring device installed at the third terminal station, correspond to the length of the fourth section of the other optical transmission line. A measurement instruction is issued to insert the test light under the specified conditions into another optical transmission line for measurement, and the first measurement device sets the test light to the second measurement device installed in the second terminal station. If not inserted, the second optical transmission line
If the test light is not inserted into the optical transmission line under the condition corresponding to the length of the section, the third measurement device corresponds to the length of the third section of the other optical transmission line. Based on the transmitted measurement instruction, a measurement instruction transmitting step of transmitting a measurement instruction so that the test light of the condition is inserted into another optical transmission path for measurement, and the first measurement device and the second measuring instrument
Measuring step for receiving data based on the backscattered light measured by the measuring device and determining whether or not a failure has occurred in the optical transmission line and other optical transmission lines based on the received data. A failure determination step.

The optical transmission line management program of the present invention connects the first terminal station and the second terminal station installed at one end and the other end of the optical transmission line, respectively, and one end thereof to the second terminal station. The test light is inserted into each of the third terminal stations arranged at the other end of the other optical transmission line, and the test light is inserted into the optical transmission line and the other optical transmission line, and the backscattered light of the inserted test light is measured. A measuring device is used to manage the optical transmission line and the other optical transmission line. The optical transmission line is composed of a first section and a second section from one end side, and the other optical transmission path is It is composed of a third section and a fourth section from one end side,
For the first measuring device installed in the first terminal station, the computer inserts the test light of the condition corresponding to the length of the first section of the optical transmission line into the optical transmission line for measurement. To the third measuring equipment installed in the third terminal station, the test light of the condition corresponding to the length of the fourth section of the other optical transmission line is transmitted to the other optical transmission device. A measurement instruction to be inserted into the path for measurement and an optical transmission to the second measuring device installed in the second terminal station when the first measuring device does not insert the test light If the test light under the condition corresponding to the length of the second section of the optical path is in the optical transmission line, and if the third measuring device does not insert the test light, the length of the third section of the other optical transmission line is And a measurement instruction transmitting means for transmitting a measurement instruction so that the test light of the condition corresponding to the height is inserted into each of the other optical transmission lines for measurement. Based on the signal has been measured instructed, first
Measurement result receiving means for receiving data based on the backscattered light measured by the second measuring instrument and the second measuring instrument, and a failure occurs in the optical transmission line and the other optical transmission line based on the received data. It functions as a failure determining means for determining whether or not there is.

According to the present invention, since the measurement instruction is transmitted so that the test light of the condition corresponding to each length obtained by dividing the optical transmission path into two sections is inserted and measured, the measurement instruction is received. The measuring device can insert the test light of the condition corresponding to the length of each section of the optical transmission line and measure the state of the optical transmission line. Further, when the test light is inserted from the measuring device on the opposite side of the optical transmission line, the state of another optical transmission line can be measured, so that the measurement efficiency is improved.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. When possible, the same parts are designated by the same reference numerals, and overlapping description will be omitted.

An optical transmission line management system 10 which is an embodiment of the present invention will be described with reference to FIG. FIG. 1 shows an optical transmission line management system 10 and measuring devices 201, 211, and 2.
FIG. 3 is a diagram illustrating a configuration for managing optical transmission lines 30, 31, 32, and 33 using 21.

The optical transmission lines 30, 31, 32 and 33 are connected to each other to form a series of optical transmission lines. Optical transmission line 3
0 and the optical transmission line 31 between the test station 20 and the optical transmission line 3
1 and the optical transmission line 32, the test station 21 is connected to the optical transmission line 3
The test station 22 is installed between the optical transmission line 2 and the optical transmission line 33. Measuring devices 201, 211, and 221 are installed in the test stations 20, 21, and 22, respectively, and the measuring devices 201, 211, and 221 are the optical switches 2 respectively.
01a, 211a, 221a and OTDR 201b, 2
11b and 221b. Moreover, the measuring devices 201, 211, and 221 are configured to be communicable with the optical transmission line management system 10.

Details of the optical transmission lines 30, 31, 32 and 33 and the measuring devices 201, 211 and 221 will be described with reference to FIG. FIG. 2 shows optical transmission lines 30, 31, 32, and 3.
3 is a diagram showing a mutual relationship between the measurement device 201 and the measuring devices 201, 211, and 221. FIG. The optical transmission line 30 includes optical fibers 301 and 3
02, 303, 304, 305, and 306 are included. Similarly, the optical transmission lines 31, 32, and 33 are similar to the optical fibers 311, 312, 313, 314, 315, and 3.
16, optical fibers 321, 322, 323, 324, 3
25, 326, optical fibers 331, 332, 333, 3
34, 335, 336. The optical fibers 301, 311, 321, 331 are connected to each other to form a series of optical transmission lines. Similarly, the other corresponding optical fibers are also connected to each other.

Optical switch 20 constituting the measuring device 201
1a is an optical fiber 301 to 3 constituting the optical transmission line 30.
No. 06, and each of the optical fibers 311 to 316 forming the optical transmission line 31 can selectively insert the test light. Specifically, the optical switch 201a has 12 input / output systems, and each input / output system has an optical fiber 301-
306 and each of the optical fibers 311 to 316 are coupled by means such as an optical coupler. By adopting such a configuration, for example, the test light can be input to the optical fiber 311 in the direction of the test equipment 211, and the backscattered light corresponding to the input test light can be received.

The OTDR 201b is an optical switch 201a.
Are optical fibers 301 to 306 and optical fibers 311 to 3
It is a portion for supplying the test light to be inserted into the light source 16. Also, O
The TDR 201b is a portion that measures the loss and return loss of each optical fiber based on the backscattered light received by the optical switch 201a. The OTDR 201b is connected to the optical transmission line management system 10 and outputs a test light based on the measurement instruction information transmitted from the optical transmission line management system 10.

Optical switch 21 constituting the measuring device 211
1a and the OTDR 211b, and the optical switches 221a and OTDR 221b constituting the measuring device 221 have the same configuration as the optical switch 201a and the OTD constituting the measuring device 201.
The configuration is the same as that of R201b.

Next, the optical transmission line management system 10 will be described. The optical transmission line management system 10 is physically a computer system (for example, workstation, personal computer) including a CPU (central processing unit), a memory, an input device such as a mouse and a keyboard, a display device such as a display, and a storage device such as a hard disk. Computer).

The optical transmission line management system 10 has, as functional components, a measurement instruction transmitting unit (measurement instruction transmitting unit) 101, a measurement result receiving unit (measurement result receiving unit) 102, as shown in FIG. Failure determination unit (failure determination means) 103
And are configured. Hereinafter, each component will be described in detail.

The measurement instruction transmitting unit 101 includes a measuring device 201.
In contrast, the test light of the condition corresponding to the half length of the optical transmission line 30 is transmitted to each of the optical fibers 301 to 306 forming the optical transmission line 30 by half the length of the optical transmission line 31 ( The test light of the condition corresponding to the length of the first section) is supplied to the optical fibers 311 to 316 forming the optical transmission line 31,
Send measurement instructions to insert and measure respectively.

Further, the measurement instruction transmitting unit 101 supplies the test equipment with the test light of the condition corresponding to the half length of the optical transmission line 31 (the length of the second section) for the measurement device 211. For each of the optical fibers 311 to 316 constituting the optical transmission line 32, a test light of a condition corresponding to a half length of the optical transmission line 32 (length of the third section) is applied to each optical fiber forming the optical transmission line 32. A measurement instruction is transmitted to each of the fibers 321 to 326 so as to be inserted and measured. Similarly, the measurement instruction transmitting unit 101 configures, for the measuring device 221, the test light under the condition corresponding to the half length of the optical transmission line 32 (the length of the fourth section) in the optical transmission line 32. For each of the optical fibers 321 to 326, the test light of the condition corresponding to the half length of the optical transmission line 33 is inserted into each of the optical fibers 331 to 336 forming the optical transmission line 33. And send a measurement instruction to measure.

Further, the measurement instruction transmitting unit 101 is, for example,
When the measuring device 201 inserts the test light into the optical fiber 311 of the optical transmission line 31, it instructs the measuring device 211 not to insert the test light into the optical fiber 311 of the optical transmission line 31. Send. In this case, the measuring device 2
For example, the optical fiber 3 of the optical transmission line 31
You may make it transmit a measurement instruction | indication so that a test light may be inserted in any of 12-316. As another aspect in this case, there is an aspect in which a measurement instruction is transmitted to the measuring device 211 so as to insert the test light into any one of the optical fibers 321 to 326 of the optical transmission path 32. A more preferable mode is a mode in which the measurement instruction is inserted into the measuring device 211 so as to insert the test light into the optical fiber 321.
Since the optical fiber 311 and the optical fiber 321 are connected to form a series of optical transmission lines, it is possible to specify whether or not a fault has occurred in the core wire to which the optical fiber 311 and the optical fiber 321 correspond, and the fault grasping efficiency of the entire optical transmission line This is because

In yet another mode, the measuring instruments 201 to 201
Some of the measurement instructions transmitted to the 221 have predetermined priorities. The measurement instruction transmission unit 101
For example, when the measurement instruction having a low priority is transmitted to the measurement device 201 and the measurement device 201 measures the optical transmission line 31 based on the measurement instruction, the measurement device 21
When transmitting a measurement instruction with a high priority to the measurement device 1, the measurement device 2 is set to give priority to the measurement of the measurement device 211.
An instruction signal is transmitted to 11. In this case, the measuring device 201
When the measurement device 211 and the measurement device 211 measure the same optical fiber 311, the measurement of the measurement device 201 may be interrupted.

The measurement result receiving unit 102, based on the measurement instruction transmitted by the measurement instruction transmitting unit 101, measures the measuring device 201.
˜221 is the part that receives the data based on the backscattered light measured. The measurement result receiving unit 102 outputs the received data to the failure determining unit 103.

The fault judging section 103 is provided with the measurement result receiving section 10
2 is a part for judging whether or not a failure has occurred in the optical transmission lines 30 to 33 based on the received data. More specifically, the presence or absence of a fault is determined by performing data analysis such as obtaining the loss and return loss of the optical transmission lines 30 to 33 using the data based on the backscattered light.

Next, the first method for determining the presence / absence of a failure in the optical transmission lines 30 to 33 using the optical transmission line management system 10 will be described with reference to FIG. FIG. 3 is a flowchart showing a first method of determining the presence / absence of a failure using the optical transmission line management system 10.

The measurement instruction transmitter 101 of the optical transmission line management system 10 inserts the test light into the optical fibers 311 to 316 forming the optical transmission line 31 in the measuring device 201 to measure the backscattered light. A measurement instruction is transmitted to (step S01). The measurement instruction transmitting unit 101 is the measurement device 201.
When the measurement instruction is transmitted to the measurement result receiving unit 102, the measurement result receiving unit 102 enters a standby state for receiving the measurement result from the measuring device 201 (step S02).

When the measurement result receiving unit 102 receives the measurement result from the measuring device 201, the measurement instruction transmitting unit 101 inserts the test light into the optical fibers 311 to 316 forming the optical transmission line 31 for the measuring device 211. Then, a measurement instruction is transmitted to measure the backscattered light (step S03).
When the measurement instruction transmitting unit 101 transmits the measurement instruction to the measuring device 211, the measurement result receiving unit 102 enters a standby state for receiving the measurement result from the measuring device 211 (step S0).
4).

The measurement result receiving section 102 includes a measuring device 201.
When the measurement result is received from the measuring device 211, the received measurement result is output to the failure determination unit 103. The failure determination unit 103 determines whether or not a failure has occurred in the optical fibers 311 to 316 forming the optical transmission line 31 based on the received measurement result (step S05).

If the optical transmission line 31 is measured by the procedure described in steps S01 to S05, the optical transmission line 3
Since the test light is not simultaneously inserted from both ends of each of the optical fibers 311 to 316 forming part 1, the measurement accuracy is improved.

Next, a second method for determining the presence / absence of a failure in the optical transmission lines 30 to 33 using the optical transmission line management system 10 will be described with reference to FIG. FIG. 4 is a flowchart showing a second method of determining the presence / absence of a failure using the optical transmission line management system 10.

The measurement instruction transmitting unit 101 of the optical transmission line management system 10 measures the backscattered light by sequentially inserting the test light into the optical fibers 311 to 316 forming the optical transmission line 31 in the measuring device 201. The measurement instruction is transmitted so as to perform (step S11). Here, it is assumed that measurement is performed in order from the optical fiber 311 to the optical fiber 316. When the measurement instruction transmitting unit 101 transmits the measurement instruction to the measuring device 201, the measurement result receiving unit 102 causes the measuring device 201 to
From the optical fibers 311 to 316 in order to receive the measurement results in order (step S12).

When the measurement result receiving unit 102 receives the measurement results of the optical fibers 311 to 316 from the measuring device 201,
The measurement result receiving unit 102 determines whether the measurement device that outputs the measurement result is the measurement device 201 (step S).
13). This is done so that when a plurality of optical fibers are attached, the presence / absence of a failure is determined at the same time when the test from both sides of each optical fiber is completed.

In step S13, if the measuring device that outputs the measurement result is the measuring device 201, the measurement instruction transmitting unit 101 instructs the measuring device 211 to select one of the optical fibers 311 to 316 forming the optical transmission line 31. , A measurement instruction is transmitted to insert the test light into the optical fiber that has received the measurement result and measure the backscattered light (step S1).
4). Specifically, when the measurement result receiving unit 102 receives the measurement result of the optical fiber 311, the measurement instruction transmitting unit 101
Sends a measurement instruction to the measuring device 211 to insert the test light into the optical fiber 311.

In step S13, if the measurement device that outputs the measurement result is not the measurement device 201, the measurement result reception unit 102 outputs the measurement result received from the measurement device 201 and the measurement device 211 to the failure determination unit 103. The failure determination unit 103 determines whether or not a failure has occurred in the optical fibers 311 to 316 forming the optical transmission line 31 based on the received measurement result (step S15).

Processing in step S14 or step S
When the process of 15 is completed, the measurement result receiving unit 102 determines whether or not the measurement results of all the optical fibers are received. If not received, the process proceeds to the process of step S12, and if received, the process is performed. Ends (step S1
6).

If the optical transmission line 31 is measured by the procedure described in steps S11 to S16, the optical transmission line 3
Since the test light is not simultaneously inserted from both ends of each of the optical fibers 311 to 316 forming part 1, the measurement accuracy is improved. Further, since the measuring device 211 can sequentially insert the test light into the optical fiber whose measurement has been completed by the measuring device 201 to perform measurement, the failure determination unit 103 can determine the presence or absence of a failure in the order of reception.

Next, a third method for determining the presence / absence of a failure in the optical transmission lines 30 to 33 using the optical transmission line management system 10 will be described with reference to FIG. FIG. 5 is a flowchart showing a third method of determining the presence / absence of a failure using the optical transmission line management system 10.

The measurement instruction transmitter 101 of the optical transmission line management system 10 specifies the optical fiber measured by the measuring device 211 (step S21). For example, of the optical fibers forming the optical transmission line 31, the optical fiber 311 is specified as the optical fiber to be measured. The measurement instruction transmitting unit 101 confirms whether the measuring device 201 does not insert the test light into the optical fiber 311 (step S22). If the test light is not inserted in the optical fiber 311, the measurement instruction transmitting unit 101 specifies the optical fiber 311 as the optical fiber to be measured, and transmits the measurement instruction to the measuring device 211 to measure the optical fiber 311. (Step S26).

On the other hand, if the test light is inserted in the optical fiber 311, the measurement instruction transmitting section 101 determines the optical fiber 311.
The optical fiber 321 connected to is temporarily specified as the optical fiber to be measured, and it is confirmed whether or not the test light is not inserted in the optical fiber 321 (step S23).
If the test light is not inserted in the optical fiber 321, the measurement instruction transmitting unit 101 identifies the optical fiber 321 as the optical fiber to be measured (step S25). The measurement instruction transmitter 101 sends the measurement device 211 an optical fiber 32
A measurement instruction is transmitted to measure 1 (step S2
6).

On the other hand, if the test light is inserted in the optical fiber 321, the measurement instruction transmitting unit 101 tentatively specifies another optical fiber 312 as the optical fiber to be measured, and returns to step S22 to continue the processing ( Step S2
4).

The measurement result receiving section 102 includes a measuring device 211.
When the measurement result is received from, it is output to the failure determination unit 103,
The failure determination unit 103 determines whether or not a failure has occurred (step S27).

When the optical transmission line 31 and the optical transmission line 32 are measured by the procedure described in steps S21 to S27, the optical fibers 311 to 311 forming the optical transmission line 31 are measured.
In addition to the fact that test light is not simultaneously inserted from both ends of the optical fiber 16, each optical fiber 32 that constitutes the optical transmission line 32
Since 1 to 326 can be measured at the same time, improvement in measurement accuracy and improvement in measurement efficiency are compatible.

Next, a fourth method for determining the presence / absence of a failure in the optical transmission lines 30 to 33 using the optical transmission line management system 10 will be described with reference to FIG. FIG. 6 is a flowchart showing a fourth method of determining the presence / absence of a failure using the optical transmission line management system 10.

The measurement instruction transmitting unit 101 of the optical transmission line management system 10 identifies the optical fiber measured by the measuring device 211 (step S31). For example, of the optical fibers forming the optical transmission line 31, the optical fiber 311 is specified as the optical fiber to be measured. The measurement instruction transmitting unit 101 confirms whether or not the measuring device 201 has inserted the test light into the optical fiber 311 (step S32). If the test light is not inserted in the optical fiber 311, the measurement instruction transmitting unit 101 specifies the optical fiber 311 as the optical fiber to be measured, and transmits the measurement instruction to the measuring device 211 to measure the optical fiber 311. (Step S36).

On the other hand, if the test light is inserted in the optical fiber 311, the measurement instruction transmitting section 101 determines that the measuring device 211
It is determined whether or not the priority of the measurement instruction to be transmitted to is high (step S33). If the priority of the measurement instruction transmitted to the measuring device 211 is high, other low-priority measurements are suspended (step S35). After interrupting the measurement of low priority, the process of step S36 is performed. On the other hand, if the priority of the measurement instruction transmitted to the measuring device 211 is low,
The measurement instruction transmitting unit 101 tentatively specifies another optical fiber 312 as an optical fiber to be measured, and returns to step S32 to continue the processing (step S34).

The measurement result receiving section 102 includes a measuring device 211.
When the measurement result is received from, it is output to the failure determination unit 103,
The failure determination unit 103 determines whether or not a failure has occurred (step S37).

When the optical transmission line 31 and the optical transmission line 32 are measured by the procedure described in steps S31 to S37, the optical fibers 311 to 311 forming the optical transmission line 31 are measured.
In addition to the fact that the test light is not simultaneously inserted from both ends of 16, the measurement with high priority can be completed first, so that the measurement accuracy and the measurement efficiency are both improved.

Next, an optical transmission line management program 92 for causing a computer to function as the optical transmission line management system 10 according to the embodiment of the present invention and a computer-readable recording medium 9 in which the optical transmission line management program 92 is recorded will be described.
FIG. 7 is a diagram showing the configuration of the recording medium 9 in which the optical transmission line management program 92 is recorded. The recording medium 9 is, for example, a magnetic disk, an optical disk, or a CD-RO.
M, a memory built in the computer, and the like.

The recording medium 9 is provided with a program area 91 for recording a program, as shown in FIG. An optical transmission line management program 92 is recorded in the program area 91. The optical transmission line management program 92 includes a main module 921 that supervises processing, a measurement instruction transmission module 922, a measurement result reception module 923, and a failure determination module 924. Here, the measurement instruction transmitting module 922 and the measurement result receiving module 92
3. The function realized by operating each of the failure determination modules 924 is the measurement instruction transmitting unit 101 and the measurement result receiving unit 10 of the optical transmission line management system 10.
2. The functions of the failure determination unit 103 are the same.

[0065]

According to the present invention, since the measurement instruction is transmitted so that the test light of the condition corresponding to each length obtained by dividing the optical transmission path into two sections is inserted and measured, the measurement instruction is transmitted. The measuring device for receiving can insert the test light of the condition corresponding to the length of each section of the optical transmission line and measure the state of the optical transmission line. The data based on the backscattered light of the optical transmission line measured based on this measurement instruction is received, and it is determined based on the received data whether or not a failure has occurred in the optical transmission line. It is possible to determine whether or not a failure has occurred in the optical transmission line under the conditions corresponding to the lengths of the respective sections. Under the conditions corresponding to the length of each section of the optical transmission line, measure the backscattered light of the optical transmission line, and use the data based on the measured backscattered light to determine whether a fault has occurred in the optical transmission line. Since it can be determined whether or not the spatial resolution and the sampling resolution are reduced as much as possible, for example, as compared with the case where the measurement is performed under the condition corresponding to the entire length of the optical transmission line. Therefore, an object of the present invention, when measuring a failure of an optical transmission line, is to eliminate as much as possible a factor that deteriorates measurement accuracy such as a decrease in spatial resolution and sampling resolution. We were able to provide a line management method and an optical transmission line management program.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an optical transmission line management system that is an embodiment of the present invention.

FIG. 2 is a diagram illustrating a measuring device and an optical transmission line of FIG.

FIG. 3 is a flowchart showing a method of managing an optical transmission line by using the optical transmission line management system according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a method for managing an optical transmission line using the optical transmission line management system according to the embodiment of the present invention.

FIG. 5 is a flowchart showing a method for managing an optical transmission line by using the optical transmission line management system according to the embodiment of the present invention.

FIG. 6 is a flowchart showing a method for managing an optical transmission line by using the optical transmission line management system according to the embodiment of the present invention.

FIG. 7 is a diagram illustrating an optical transmission line management program that is an embodiment of the present invention.

[Explanation of symbols]

10 ... Optical transmission line management system, 101 ... Measurement instruction transmitting unit, 102 ... Measurement result receiving unit, 103 ... Failure determination unit, 2
0, 21, 22 ... Testing station, 201, 211, 221 ... Measuring equipment, 201a, 211a, 221a ... Optical switch,
201b, 211b, 221b ... OTDR, 30, 3
1, 32, 33 ... Optical transmission lines.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2G086 CC03                 5K002 BA04 BA06 EA05 FA01 GA03                 5K042 CA10 CA13 CA23 DA32 EA04                       FA21 JA01 JA03 LA11 LA13

Claims (15)

[Claims] 1. A backscattered light of the inserted test light is measured by inserting the test light into the one end station and the other end station respectively installed at one end and the other end of the optical transmission line and inserting the test light into the optical transmission line. In the optical transmission line management system for managing the optical transmission line by using a measuring device, the optical transmission line is composed of a first section and a second section from the one end side, and is installed in the one end station. For the first measuring device, the test light of the condition corresponding to the length of the first section of the optical transmission line is supplied to the second measuring device installed at the other end station. Is a measurement instruction transmitting means for transmitting a measurement instruction so as to insert and measure the test light of the condition corresponding to the length of the second section of the optical transmission line, and based on the transmitted measurement instruction. The first measuring device and the second measuring device The optical transmission line including a measurement result receiving unit that receives data based on the backscattered light and a failure determination unit that determines whether or not a failure has occurred in the optical transmission line based on the received data. Management system. 2. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. Wherein the measurement instruction transmitting means inserts the test light into the optical fiber when the test light is not inserted into the second measuring device from the first measuring device. The optical transmission line management system according to claim 1, wherein the optical transmission path management system transmits the measurement instruction so that the measurement instruction is transmitted. 3. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. The optical fiber forming the optical transmission line when the test light is inserted into the second measuring device from the first measuring device. 2. The optical transmission line management system according to claim 1, wherein the measurement instruction is transmitted so as to insert the test light into an optical fiber other than the one optical fiber into which the test light is inserted. 4. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. Each of the measurement instructions transmitted by the measurement instruction transmitting unit to the first measurement device and the second measurement device has a predetermined priority order. The instruction transmitting means tests the first measuring device or the second measuring device from the first measuring device or the second measuring device which are installed on opposite sides of the optical fiber with respect to each other. If light is inserted,
The optical transmission line management system according to claim 1, wherein a measurement instruction is transmitted to insert the test light into the optical fiber according to the priority. 5. A first terminal station and a second terminal station respectively installed at one end and the other end of the optical transmission line, and the second terminal station.
The test light is inserted into the optical transmission line and the other optical transmission line which are respectively disposed in the third terminal stations which are disposed at the other ends of the other optical transmission lines whose one end is connected to the terminal station and which are inserted. In an optical transmission line management system that manages the optical transmission line and the other optical transmission line using a measuring device that measures the backscattered light of the test light, the optical transmission line includes a first section and a first section from the one end side. The second optical transmission line is composed of a second section, a third section and a fourth section from the one end side, and the first measurement device installed in the first terminal station. With respect to the above, the measurement instruction is given to the third terminal station so that the test light of the condition corresponding to the length of the first section of the optical transmission line is inserted into the optical transmission line for measurement. For the third measuring device, the length of the fourth section of the other optical transmission line is A measurement instruction to insert the test light under the specified conditions into the other optical transmission line for measurement, and to the second measurement device installed in the second terminal station, the first measurement device Does not insert the test light, the test light of the condition corresponding to the length of the second section of the optical transmission line is inserted into the optical transmission line, and the third measuring device inserts the test light. If not, a measurement instruction to send a measurement instruction so that the test light of the condition corresponding to the length of the third section of the other optical transmission line is inserted into the other optical transmission line for measurement, respectively. Transmitting means, a measurement result receiving means for receiving data based on the backscattered light measured by the first measuring instrument and the second measuring instrument based on the transmitted measurement instruction, and the received data. On the basis of the failure of the optical transmission line and the other optical transmission line An optical transmission path management system comprising a fault determining means for determining Luke, the. 6. The backscattered light of the inserted test light is measured by inserting the test light into the one end station and the other end station respectively installed at one end and the other end of the optical transmission line, and inserting the test light into the optical transmission line. In the optical transmission line management method for managing the optical transmission line by using a measuring device, the optical transmission line is composed of a first section and a second section from the one end side, and is installed in the one end station. For the first measuring device, the test light of the condition corresponding to the length of the first section of the optical transmission line is supplied to the second measuring device installed at the other end station. Includes a measurement instruction transmitting step for transmitting a measurement instruction so as to insert and measure a test light of a condition corresponding to the length of the second section of the optical transmission line, and based on the transmitted measurement instruction. The first measuring device and the second measuring device The optical transmission line including a measurement result receiving step of receiving data based on the backscattered light and a failure determination step of determining whether or not a failure has occurred in the optical transmission path based on the received data. Management method. 7. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. In the step of transmitting the measurement instruction, when the test light is not inserted into the second measuring device from the first measuring device, the test light is inserted into the optical fiber. The optical transmission line management method according to claim 6, wherein the measurement instruction is transmitted so as to be inserted. 8. The optical transmission path is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. In the step of transmitting the measurement instruction, when the test light is inserted from the first measuring device to the second measuring device, the light forming the optical transmission line is inserted. The optical transmission line management method according to claim 6, wherein the measurement instruction is transmitted so that the test light is inserted into an optical fiber other than the one optical fiber in which the test light is inserted among the fibers. 9. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. In each of the measurement instructions to be transmitted to the first measurement device and the second measurement device, a priority order is set in advance, and in the measurement instruction transmission step, Test light is inserted from the first measuring instrument or the second measuring instrument that is installed on the opposite side of the first measuring instrument or the second measuring instrument with the optical fiber in between. The optical transmission line management method according to claim 6, further comprising transmitting a measurement instruction to insert the test light into the optical fiber according to the priority order. 10. A first terminal station and a second terminal station installed at one end and the other end of the optical transmission path, respectively, and another optical transmission path whose one end is connected to the second terminal station. Using a measuring device which is arranged at each of the third terminal stations arranged at the other end and which inserts the test light into the optical transmission line and the other optical transmission line and measures the backscattered light of the inserted test light, In the optical transmission line management method for managing the optical transmission line and the other optical transmission line, the optical transmission line is composed of a first section and a second section from the one end side, and the other optical transmission path is provided. Is composed of a third section and a fourth section from the one end side. For the first measuring device installed in the first terminal station, is the first section of the optical transmission line. Measurement instruction to insert the test light of the condition corresponding to the length into the optical transmission line for measurement For the third measuring device installed in the third terminal station, a test light of a condition corresponding to the length of the fourth section of the other optical transmission line is supplied to the other optical transmission line. A measurement instruction to insert and measure is given to the second measuring device installed in the second terminal station, when the first measuring device does not insert the test light. If the test light under the condition corresponding to the length of the second section of the transmission line is not inserted into the optical transmission line, and if the third measuring device does not insert the test light, the third optical line of the other optical transmission line is inserted. Based on the transmitted measurement instruction, a measurement instruction transmitting step for transmitting a measurement instruction so that the test light of the condition corresponding to the length of the section is inserted into each of the other optical transmission lines and measured. Receiving data based on the backscattered light measured by the first measuring device and the second measuring device Measurements and receiving step, based on the data the received optical transmission line management method and a failure determining step for determining whether the optical transmission line and the other optical transmission line fault has occurred. 11. The backscattered light of the inserted test light is measured by inserting the test light into the one end station and the other end station respectively installed at one end and the other end of the optical transmission line, and inserting the test light into the optical transmission line. In the optical transmission line management program for managing the optical transmission line by using a measuring device, the optical transmission line is composed of a first section and a second section from the one end side, To the first measuring device installed in the second measuring device installed in the other end station, the test light having a condition corresponding to the length of the first section of the optical transmission line is installed. With respect to the above, the measurement instruction transmitting means for transmitting the measurement instruction so as to insert and measure the test light of the condition corresponding to the length of the second section of the optical transmission line, and the transmitted measurement. Based on the instruction, the first measuring device and the Measurement result receiving means for receiving data based on the backscattered light measured by the measuring instrument of 2, and failure determining means for determining whether or not a failure has occurred in the optical transmission line based on the received data. An optical transmission line management program for functioning. 12. The optical transmission path is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. Wherein the measurement instruction transmitting means inserts the test light into the optical fiber when the test light is not inserted into the second measuring device from the first measuring device. The optical transmission line management program according to claim 11, which transmits the measurement instruction so as to perform. 13. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. The optical fiber forming the optical transmission line when the test light is inserted into the second measuring device from the first measuring device. 12. The optical transmission line management program according to claim 11, wherein the measurement instruction is transmitted so that the test light is inserted into an optical fiber other than the one optical fiber in which the test light is inserted. 14. The optical transmission line is configured to include a plurality of optical fibers, and the first measuring device and the second measuring device selectively test light with respect to each of the plurality of optical fibers. Each of the measurement instructions transmitted by the measurement instruction transmitting unit to the first measurement device and the second measurement device has a predetermined priority order. The instruction transmitting means tests the first measuring device or the second measuring device from the first measuring device or the second measuring device which are installed on opposite sides of the optical fiber with respect to each other. If light is inserted,
The optical transmission line management program according to claim 11, which transmits a measurement instruction to insert test light into the optical fiber according to the priority. 15. A first terminal station and a second terminal station installed at one end and the other end of the optical transmission path, respectively, and another optical transmission path whose one end is connected to the second terminal station. Using a measuring device which is arranged at each of the third terminal stations arranged at the other end and which inserts the test light into the optical transmission line and the other optical transmission line and measures the backscattered light of the inserted test light, In the optical transmission line management system for managing the optical transmission line and the other optical transmission line, the optical transmission line is composed of a first section and a second section from the one end side, and the other optical transmission path. Is composed of a third section and a fourth section from the one end side, and a computer is connected to the first measuring device installed at the first terminal station in the first section of the optical transmission line. The test light of the condition corresponding to the section length is inserted into the optical transmission line and measured. To the third measuring device installed in the third terminal station, a test light of a condition corresponding to the length of the fourth section of the other optical transmission line is specified. The first measurement device inserts the test light into the second measurement device installed in the second terminal station, and issues a measurement instruction to insert the measurement light into the other optical transmission line. If not, the test light of the condition corresponding to the length of the second section of the optical transmission line is inserted into the optical transmission line. Measuring instruction transmitting means for respectively transmitting a measuring instruction so that the test light of the condition corresponding to the length of the third section of the optical transmission line is inserted into the other optical transmission line and measured. Based on the backscattered light measured by the first measuring device and the second measuring device based on the measured instruction. Function as a measurement result receiving means for receiving data and a failure determining means for determining whether or not a failure has occurred in the optical transmission path and the other optical transmission path based on the received data. An optical transmission line management program.