JPS589039A - Monitoring system for optical transmission line - Google Patents
Monitoring system for optical transmission lineInfo
- Publication number
- JPS589039A JPS589039A JP56107784A JP10778481A JPS589039A JP S589039 A JPS589039 A JP S589039A JP 56107784 A JP56107784 A JP 56107784A JP 10778481 A JP10778481 A JP 10778481A JP S589039 A JPS589039 A JP S589039A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical
- main signal
- pilot signal
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は光伝送路の監視方式Ｋｌｌする・現在、光伝送
路の監視方式として、所謂介在キャッチボール方式と呼
ばれる手段が提案されている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical transmission line monitoring system.Currently, a means called the so-called interposed catchball system has been proposed as an optical transmission line monitoring system.
これに、海底伝送方式で用いられる障害位置探索法を光
ケーブルでの伝送に応用したもので、伝送路障害時の障
害位置検出に有効である。This is an application of the fault location search method used in submarine transmission systems to optical cable transmission, and is effective in detecting fault locations when transmission line faults occur.
以下、図面會参照して上記介在キャッチボール方式の説
明１行なう。The intervening catch ball system will be explained below with reference to the drawings.
纂１図で、ｔ、２，３．４は端局の主信号送受信部、５
．６．７，８扛監袂パイロット信号送受信部、２３．２
４．２５．２４は端局１り送られる光信号の中継器であ
る。尚、図面では省略されているが、上記各中継器は、
特に海底伝送等の長距離伝送においてそれぞれ間に多数
の中継器を介在し、光ファイバによ５１１続され、ケー
ブルを構成している。In the first diagram, t, 2, 3.4 is the main signal transmitting/receiving section of the terminal station, 5
．． 6.7, 8 supervising pilot signal transmitting/receiving section, 23.2
4.25.24 is a repeater for optical signals sent from the terminal station 1. Although omitted in the drawing, each of the above repeaters is
Particularly in long-distance transmission such as undersea transmission, a large number of repeaters are interposed between each transmission, and 511 optical fibers are connected to form a cable.
介在キャッチボール方式では、−局の送信部５゜８より
常時監視パイレット信号を象出し、光伝送路の監視食性
なっている。In the intervening catchball system, a constant monitoring pilot signal is generated from the transmitter 5.8 of the - station, and the optical transmission line is monitored.
即ち、両端局間管往復する信号伝搬遅砥時間の同期で、
上記パイレット信号を短時間０ＦＦＫて、信号の間歇を
両端局間でキャッチボールの様にやりとすするものであ
る−
ここで、中継器の故障、ケーブルの切断郷党伝送路に障
害が発生すると、該障害に起因する信号断の情報が、両
端局に伝搬される。この信号断の情報は、伝送路の障害
発生位置によりそれぞれ異なった時間に各端局に到達し
、これら到達時間差ｔ、曽配パイーット信号の間歇の到
達時間から針側し、障害発生位置を知る。In other words, by synchronizing the signal propagation delay time for reciprocating the pipe between both ends,
The pilot signal is 0FFKed for a short period of time, and the intermittent signal is played like a game of catch between both terminal stations.If a repeater failure occurs, the cable is cut, or a failure occurs in the transmission line, the failure occurs. Information on the signal interruption caused by this is propagated to both end stations. This signal disconnection information arrives at each terminal station at different times depending on the location of the fault on the transmission path, and the difference in arrival times t between these signals is calculated from the intermittent arrival time of the Souppait signal to determine the location of the fault. .
しかし乍も、上記従来の介在中ヤッチポール方式では、
１１１Ｉ！パイロット信号の送受（Ｉｆｔ、独立の光伝
送路で行なってい４ため主信号系の中継器２３゜２４の
故障及び主信号系の党７γイパのみの切断によっては、
障害発生位置を検出することが固層である。However, in the above-mentioned conventional intervening Yatch pole method,
111I! Since pilot signal transmission and reception (Ift) is carried out on an independent optical transmission line, failure of the main signal system repeaters 23 and 24 and disconnection of only the main signal system relays 23 and 24 may cause
Detecting the location of a fault is a solid state.
本発１１は、上記従来の介在キャッチボール方式０ＩＳ
ｌｆｆ題点を解決するもので、主信号系の光伝送路に陣
書の発生した場合Ｋｔ−１必ずその障害発生位置を検出
することが１能な光伝送路監視方式會提供することを目
的としている。The present invention 11 is based on the conventional intervening catchball system 0IS.
The purpose of this is to provide an optical transmission line monitoring system that solves the lff problem and is capable of always detecting the location of the Kt-1 fault when it occurs on the optical transmission line of the main signal system. It is said that
又、上記本発−の目的は、光波長分割多重によｐ主信号
と監視パイロット信号ｔｐｉ＋−の光７アイパで伝送し
、且つ鮫監横パイ冒ット信号の短時間の間歇ｔ、二つの
端局間を往復する信号伝搬遍雨時関の同期で送受信し伝
送路障害発生時の障害位置を検出する光伝送路監視方式
により達成される。In addition, the purpose of the above-mentioned device is to transmit the P main signal and the monitoring pilot signal tpi+- by optical wavelength division multiplexing, and to transmit the short-time intermittent t, 2 of the shark supervisory horizontal pilot signal. This is achieved by an optical transmission line monitoring system that transmits and receives signals back and forth between two terminal stations in synchronized transmission and reception, and detects the location of a transmission line failure when it occurs.
以下、図面管参照しτ本発明による光伝送路監視方式を
１１明する。Hereinafter, the optical transmission path monitoring system according to the present invention will be explained with reference to the drawings.
第２１は、本発明による監視方式の基本的構成管示すプ
四ツタ図であり、口中９．１０．１１゜１２は端局、２
７．２１１ａ中１１１４１．１１４．１１！１は各中継
Ｓ１結ぶ光ファパよｐ成ゐケーブルである。尚、前述の
ように、各中継器間Ｏ結合は、間に複数の中継器を介し
て行なうことが可能であゐ命Ｍｕｌｔｃｐｌ・ｘｉｍｇ
）により主信号と監視パイロット信号を同一の７アイパ
で伝送しているため、パイｐット信号を送受するためだ
けに用いられる光伝送路が設けられりい擾い。The 21st is a four-point diagram showing the basic configuration of the monitoring system according to the present invention.
11141.114.11!1 in 7.211a is an optical fiber-to-p cable that connects each relay S1. As mentioned above, the O-coupling between each repeater can be performed via multiple repeaters in between.
), the main signal and monitoring pilot signal are transmitted using the same 7-iper, which makes it difficult to provide an optical transmission line that is used only for transmitting and receiving the pilot signal.
従って、主信号系の光伝送路に障害が発生した場合、よ
記バイｉツ＋碧号断の情報が必ず搬送されるため、従来
に比較して、その監視を確実なｔのとしている。Therefore, if a failure occurs in the optical transmission line of the main signal system, the information of ``Yoki Bye Itsu + Ao Ichigo'' is always conveyed, making the monitoring more reliable than in the past.
又、元ファイバの本数も、従来の様に、パイロット信号
伝送用のファイバを別途設ける必要がないため、減少で
き石。In addition, the number of original fibers can be reduced as there is no need to provide a separate fiber for pilot signal transmission as in the conventional case.
第３１１に本発明による光伝送路の送信憫の更に詳＃１
１にブ胃ツク図會示す。No. 311: Further details of the transmission method of the optical transmission line according to the present invention #1
Figure 1 shows the diagram.
壇ず、送信端局側にシいて、レーザダイオード（ＬＤ１
等発党票子１３は外部よｐ送られる信号に従い、電気信
号を光信号に変換し出力する・ここで、本働明では、監
視パイロット信号を発すゐ発覚素子１４と、前妃主儒号
の出力とｔ合波回路１７で、光波長分割多重（しめ、信
号ｔ−１本の光７アイパ１１ＢＫ″Ｃ送出する。Instead, a laser diode (LD1) is installed on the transmitting terminal side.
In accordance with the signal sent from the outside, the detector element 13 converts the electrical signal into an optical signal and outputs it.In this work, the detector element 14, which emits the monitoring pilot signal, and the detector element 14, which emits the monitoring pilot signal, and the The output and t multiplexing circuit 17 sends out optical wavelength division multiplexing (t-1 optical signal t-1).
又、受信端局側でに、この一本の光ファイバで搬送され
た光信号ｔ１分波回路１８により主信号と監視パイロッ
ト信号とに分波し、それぞれ主信号受省用受光素子１５
、及び瞥視パイロット儒号受信用受光素子１６に送ゐ。Further, on the receiving end station side, the optical signal t1 carried by this single optical fiber is demultiplexed into a main signal and a monitoring pilot signal by a demultiplexing circuit 18, and each is sent to a light receiving element 15 for receiving the main signal.
, and sent to the light-receiving element 16 for receiving the visual pilot signal.
第４１ＩｌｌＫ１送受信の双方向の光伝送會一本Ｏ光７
テイパ會用いて行なう実施例について示す。41st IllK1 Two-way optical transmission system for transmission and reception One optical fiber 7
An example using a taper meeting will be shown.
ここで端局１９灯光フアイバ１１９を使用して主信号（
波畏：入）、監禮信号Ｃ波長：入、）音光波長分割多重
によシ中継器２９へ送出すると供、Ｋ％端局２９より、
主信号Ｃ波長：入、）、監視信号（波長；入、 ［）
多重した光信号を受は為。Here, the main signal (
The signal C wavelength: input,) is sent to the repeater 29 via acoustic and optical wavelength division multiplexing, and from the K% terminal station 29,
Main signal C wavelength: on, ), monitoring signal (wavelength: on, [)
To receive multiplexed optical signals.
同様にし°て、端局２１は、主信号Ｃ波長二人、１、Ｉ
ｌ視傷信号Ｃ波長大雪 １ｖｔ中継ａａＯよｐ受信し主
信号Ｃ波長二人ｓ）、監視信号（＠長二人４ ）を送信
する。Similarly, the terminal station 21 receives the main signal wavelengths C, 1, and I.
lVisual damage signal C wavelength heavy snow 1vt relay aaO receives the main signal C wavelength two peoples) and sends a monitoring signal (@cho two people 4).
中継器２９、および３０間は、一本の元７アイパ１２０
によｐ主信号並びに監視信号が搬送される大め、大巾な
ケーブルの減少が可能である。Between repeaters 29 and 30, one original 7-aipa 120
This makes it possible to reduce the number of large, wide cables on which the main signals as well as the monitoring signals are carried.
以上、本発明は、光波長分割多重によｐ主信号と監視パ
イ四ット信号ｔ−同一の党ファイバで伝送する％Ｏであ
り、これにより、ケーブルの本数を減少させると供に、
主信号系の障害時にありて、確＠に、その障害位置音検
出することが可能である・
尚、上述ＯＸＸ何例ｔｌＰい′ｃは、設明ツタめ、１つ
の主信号に対し一つの監信号を伝送する場合についての
み示したが、実際に社複数の主信号を光波長分割多重に
よｊｌＦｔｌ＃に伝送することにより、一層効率の良い
信号送受が可能となる。即ち、一本の光伝送系において
は、少なくと％１’：）０監視パイ四シト儒４＃を送受
す４０４で、十分−ｔｏ機能を果たす４ｅであり、主信
号については、通常知られゐ多重方式によｐＩＩ数の信
号を岡崎に伝遇す４仁とができる。As described above, the present invention transmits the P main signal and the supervisory signal T by the same party fiber by optical wavelength division multiplexing, thereby reducing the number of cables and
When there is a fault in the main signal system, it is possible to accurately detect the location of the fault. Although only the case of transmitting a supervisory signal is shown, by actually transmitting a plurality of main signals to jlFtl# by optical wavelength division multiplexing, even more efficient signal transmission and reception becomes possible. That is, in a single optical transmission system, 404, which transmits and receives at least %1':)0 monitoring pi4sitofu4#, is enough to fulfill the -to function, and the main signal is usually not known. By using the multiplexing method, four signals can be transmitted to Okazaki as many as pII.
第１図は従来のｆｔ伝送路監視方式を、第２−１第４ｍ
５は本発Ｗ１４による光伝送路監視方式を、第３Ｉｌｌ
は、本発明による元伝送路麹視方式の一方向の更に詳細
なブ四ツク＠を示している。
図中、ｌ〜ＩＬ １９．２１は端局、２３〜３０は中継
器、１３．１４は発光素子、１５．１８蝶受光素子、１
７扛合ｔＩＬｇｌ路、１８は分波回路、１００〜１２１
は光ファイバを示す・
第１図
第２の
１８３図
図
−Figure 1 shows the conventional ft transmission line monitoring system.
5 shows the optical transmission path monitoring method based on the present invention W14 in the 3rd Ill.
shows a more detailed block diagram of one direction of the original transmission line inspection method according to the present invention. In the figure, l to IL 19.21 are terminal stations, 23 to 30 are repeaters, 13.14 is a light emitting element, 15.18 is a butterfly light receiving element, 1
7 combination tILgl path, 18 branching circuit, 100 to 121
indicates an optical fiber. Figure 1, Figure 2, Figure 183-
Claims (1)
一の光ファイバで伝送し、且つ該監視パイロット信号の
短時間の間歇ミニつの端局間を往復する信号伝搬遅砥時
間の同期で送受信し、伝送路障害時生時の障害位置を検
出することｔＯＷとする光伝送路監視方式。The optical wavelength division multiplexed KL5 main signal and the monitoring pilot signal are transmitted through the same optical fiber, and the monitoring pilot signal is transmitted and received in synchronization with the signal propagation delay time of the short-term intermittent round trip between the mini terminal stations. An optical transmission line monitoring method that detects the location of a fault when a road fault occurs (tOW).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56107784A JPS589039A (en) | 1981-07-10 | 1981-07-10 | Monitoring system for optical transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56107784A JPS589039A (en) | 1981-07-10 | 1981-07-10 | Monitoring system for optical transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS589039A true JPS589039A (en) | 1983-01-19 |
Family
ID=14467928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56107784A Pending JPS589039A (en) | 1981-07-10 | 1981-07-10 | Monitoring system for optical transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63261932A (en) * | 1987-04-20 | 1988-10-28 | Nec Corp | Fault point location system |
| JPH02264527A (en) * | 1989-04-04 | 1990-10-29 | Nec Corp | Two-way communication system using single stripe optical fiber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183704A (en) * | 1975-01-20 | 1976-07-22 | Fujitsu Ltd | |
| JPS53130053A (en) * | 1977-04-20 | 1978-11-13 | Sumitomo Electric Ind Ltd | Circuit supervisory system of optical fiber cable |
| JPS55128134A (en) * | 1979-03-28 | 1980-10-03 | Nippon Telegr & Teleph Corp <Ntt> | Determination system for obstruction point of optical fiber |
| JPS55136933A (en) * | 1979-04-13 | 1980-10-25 | Kansai Electric Power Co Inc:The | System for searching fault point of optical fiber transmission line |
| JPS55136934A (en) * | 1979-04-13 | 1980-10-25 | Kansai Electric Power Co Inc:The | Fault-finding method for optical-fiber transmission line |
-
1981
- 1981-07-10 JP JP56107784A patent/JPS589039A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183704A (en) * | 1975-01-20 | 1976-07-22 | Fujitsu Ltd | |
| JPS53130053A (en) * | 1977-04-20 | 1978-11-13 | Sumitomo Electric Ind Ltd | Circuit supervisory system of optical fiber cable |
| JPS55128134A (en) * | 1979-03-28 | 1980-10-03 | Nippon Telegr & Teleph Corp <Ntt> | Determination system for obstruction point of optical fiber |
| JPS55136933A (en) * | 1979-04-13 | 1980-10-25 | Kansai Electric Power Co Inc:The | System for searching fault point of optical fiber transmission line |
| JPS55136934A (en) * | 1979-04-13 | 1980-10-25 | Kansai Electric Power Co Inc:The | Fault-finding method for optical-fiber transmission line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63261932A (en) * | 1987-04-20 | 1988-10-28 | Nec Corp | Fault point location system |
| JPH02264527A (en) * | 1989-04-04 | 1990-10-29 | Nec Corp | Two-way communication system using single stripe optical fiber |
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