JPH03258036A - Monitor system for optical transmission line - Google Patents
Monitor system for optical transmission lineInfo
- Publication number
- JPH03258036A JPH03258036A JP2056979A JP5697990A JPH03258036A JP H03258036 A JPH03258036 A JP H03258036A JP 2056979 A JP2056979 A JP 2056979A JP 5697990 A JP5697990 A JP 5697990A JP H03258036 A JPH03258036 A JP H03258036A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- signal
- monitor
- fiber cable
- monitoring
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 66
- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims description 41
- 230000001172 regenerating effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 abstract 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光伝送路の監視方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an optical transmission line monitoring method.
従来この種の光伝送路の監視方式においては、光伝送路
を介して伝送すべき信号に変調を施したものを監視信号
とし、光ファイバケーブルに接続された光再生中継器の
光もしくは電気信号段で監視信号の帰路用光ファイバケ
ーブルにループバックして信号を伝達し、端局に送る方
法をとっていた。Conventionally, in this type of optical transmission line monitoring system, the monitoring signal is a modulated signal to be transmitted via the optical transmission line, and the optical or electrical signal of the optical regenerator connected to the optical fiber cable is used as the monitoring signal. The method used was to loop back the monitoring signal to the optical fiber cable for the return route, transmit the signal, and send it to the terminal station.
上述した従来の伝送路の監視方式は、主信号に変調を施
したものを監視信号として伝送路を監視するため、正常
の動作状態にあるインサービス状態では光伝送路の監視
ができないという欠点がある。The conventional transmission line monitoring method described above uses a modulated main signal as a monitoring signal to monitor the transmission line, so it has the disadvantage that it is not possible to monitor the optical transmission line when it is in service, which is a normal operating state. be.
本発明の方式は、光ファイバケーブルと光再生中継器に
よって信号を伝送する光伝送路の監視方式において、前
記光再生中継器の入力を分岐し、この入力にもとづいて
前記光再生中継器ごとに異る波長の光監視信号を発生し
て、前記光再生中継器ごとに異る波長の光監視信号を前
記光伝送路の監視系光ファイバケーブルに重畳して端局
に供給する手段とを備えて構成される。The method of the present invention is a monitoring method for an optical transmission line in which signals are transmitted using an optical fiber cable and an optical regenerator, in which the input of the optical regenerator is branched, and based on this input, each optical regenerator is means for generating optical monitoring signals of different wavelengths, superimposing the optical monitoring signals of different wavelengths for each of the optical regenerators onto the monitoring optical fiber cable of the optical transmission line, and supplying the superimposed optical monitoring signals to the terminal station. It consists of
次に、図面を参照して本発明を説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の１ｆｆＩ戒図であり、２つ
の光再生中継器を備えた光伝送路の場合を例として示し
、信号系光ファイバケーブル６と帰路用の監視系光ファ
イバケーブル７を介して接続された監視回路付再生中継
器４と５を備えて成り、監視回路付再生中継器４は、光
再生中継器ｌと、波長人工の光監視信号を発生する光監
視信号発生回銘２と、光監視信号を監視系光ファイバケ
ーブル７に結合する光結合器３を備え、また監視回路付
再生中継器８は、光再生中継器１と、波長穴２の光監視
信号を発生する光監視信号発生回路８と、光結合器９を
備えて構成される。FIG. 1 is a 1ffI diagram of an embodiment of the present invention, showing as an example the case of an optical transmission line equipped with two optical regenerators, a signal system optical fiber cable 6 and a monitoring system optical fiber for the return path. It comprises regenerative repeaters 4 and 5 with a monitoring circuit connected via a cable 7, and the regenerative repeater 4 with a monitoring circuit is connected to an optical regenerative repeater 1 and an optical monitoring signal that generates an optical monitoring signal of artificial wavelength. The regenerative repeater 8 with a monitoring circuit is equipped with an optical coupler 3 that couples the optical monitoring signal to the optical fiber cable 7 for the monitoring system. The optical monitoring signal generating circuit 8 is configured to include an optical monitoring signal generating circuit 8 that generates a signal, and an optical coupler 9.
次に、第１図の実施例の動作について説明する。Next, the operation of the embodiment shown in FIG. 1 will be explained.
監視回路付再生器４の光再生中継器１に入力した主信号
は、再生中継処理を経て信号系光ファイバケーブル６に
送出されるとともに、分岐して光監視信号発生回路２に
供給される。The main signal input to the optical regenerative repeater 1 of the regenerator with monitoring circuit 4 is sent out to the signal system optical fiber cable 6 through regenerative repeating processing, and is branched and supplied to the optical monitoring signal generation circuit 2.
光監視信号発生回路２は、入力した主信号を利用し、波
長穴１の光監視信号を発生するレーザダイオードの駆動
信号を発生し、がくして発生した波長穴１の監視信号は
光結合器３を介して監視系光ファイバケーブル７に送出
される。The optical monitoring signal generation circuit 2 uses the input main signal to generate a drive signal for a laser diode that generates an optical monitoring signal for the wavelength hole 1, and the generated monitoring signal for the wavelength hole 1 is sent to the optical coupler 3. The signal is sent out to the monitoring system optical fiber cable 7 via.
全く同様にして、波長穴２の光監視信号が光結合器９を
介して監視系光ファイバケーブル７に送出される。In exactly the same way, the optical monitoring signal of the wavelength hole 2 is sent to the monitoring system optical fiber cable 7 via the optical coupler 9.
波長の異る２つの光監視信号は、こうして波長多重され
て端局に供給され、主信号の伝送を妨げることなく光伝
送路の監視を行なうことができる。The two optical monitoring signals having different wavelengths are thus wavelength-multiplexed and supplied to the terminal station, making it possible to monitor the optical transmission line without interfering with the transmission of the main signal.
以上説明したように本発明は、光再生中継器に中継器ご
とに発光波長の異る光監視信号を発生する光監視信号発
生器路を付加し、その光監視信号を監視信号帰路光ファ
イバケーブルを介して波長多重し端局ヘループバックす
ることにより、インサービス時に、あっても光伝送路の
監視ができる効果がある。As explained above, the present invention adds an optical supervisory signal generator path to an optical regenerative repeater to generate an optical supervisory signal having a different emission wavelength for each repeater, and transmits the optical supervisory signal to a supervisory signal return optical fiber cable. By wavelength multiplexing and looping back to the terminal station, it is possible to monitor the optical transmission line even if it is in service.
第１図は本発明の一実施例の構成国である。
１・・・再生中継器、２・・・光監視信号発生回路、３
・・・光結合器、４・・・監視回路付再生中継器、５・
・・再生中継器、６・・・主信号系光ファイバケーブル
、７・・・監視系光ファイバケーブル、８・・・光監視
信号発生回路、９・・・光結合器、１０・・・監視回路
付再生中継器。FIG. 1 shows the constituent countries of one embodiment of the present invention. 1... Regenerative repeater, 2... Optical monitoring signal generation circuit, 3
...Optical coupler, 4...Regenerative repeater with monitoring circuit, 5.
... Regenerative repeater, 6... Main signal system optical fiber cable, 7... Monitoring system optical fiber cable, 8... Optical monitoring signal generation circuit, 9... Optical coupler, 10... Monitoring Regenerative repeater with circuit.
Claims (1)
する光伝送路の監視方式において、前記光再生中継器の
入力を分岐し、この入力にもとづいて前記光再生中継器
ごとに異る波長の光監視信号を発生して、前記光再生中
継器ごとに異る波長の光監視信号を前記光伝送路の監視
系光ファイバケーブルに重畳して端局に供給する手段を
備えて成ることを特徴とする光伝送路の監視方式。In a monitoring method for an optical transmission line in which signals are transmitted using an optical fiber cable and an optical regenerative repeater, the input of the optical regenerative repeater is branched, and based on this input, optical monitoring of a different wavelength for each optical regenerative repeater is performed. It is characterized by comprising means for generating a signal, superimposing an optical monitoring signal of a different wavelength for each of the optical regenerators onto a monitoring optical fiber cable of the optical transmission line, and supplying the superimposed signal to the terminal station. A monitoring method for optical transmission lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2056979A JPH03258036A (en) | 1990-03-07 | 1990-03-07 | Monitor system for optical transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2056979A JPH03258036A (en) | 1990-03-07 | 1990-03-07 | Monitor system for optical transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03258036A true JPH03258036A (en) | 1991-11-18 |
Family
ID=13042627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2056979A Pending JPH03258036A (en) | 1990-03-07 | 1990-03-07 | Monitor system for optical transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03258036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440418A (en) * | 1992-07-15 | 1995-08-08 | Oki Electric Industry Co., Ltd. | Method and apparatus for alarm surveillance for an optical transmission system |
| EP0935355A2 (en) * | 1998-02-05 | 1999-08-11 | Lucent Technologies Inc. | A system and method for monitoring and characterizing optical links |
| US5943146A (en) * | 1995-07-26 | 1999-08-24 | Nec Corporation | Optical transmission system in which no arrival of a first light signal is notified from a first station to a second station by an alarm light signal multiplexed with a second light signal in wavelength |
-
1990
- 1990-03-07 JP JP2056979A patent/JPH03258036A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440418A (en) * | 1992-07-15 | 1995-08-08 | Oki Electric Industry Co., Ltd. | Method and apparatus for alarm surveillance for an optical transmission system |
| US5943146A (en) * | 1995-07-26 | 1999-08-24 | Nec Corporation | Optical transmission system in which no arrival of a first light signal is notified from a first station to a second station by an alarm light signal multiplexed with a second light signal in wavelength |
| EP0935355A2 (en) * | 1998-02-05 | 1999-08-11 | Lucent Technologies Inc. | A system and method for monitoring and characterizing optical links |
| EP0935355A3 (en) * | 1998-02-05 | 1999-12-22 | Lucent Technologies Inc. | A system and method for monitoring and characterizing optical links |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5995256A (en) | Method and system for managing optical subcarrier reception | |
| US5440418A (en) | Method and apparatus for alarm surveillance for an optical transmission system | |
| EP0449475B1 (en) | Telemetry for optical fiber amplifier repeater | |
| JP3729951B2 (en) | Optical network system | |
| JP5195746B2 (en) | Transmission line monitoring method and apparatus | |
| US6141125A (en) | Intra-node diagnostic signal | |
| JPH08317433A (en) | One-dimensional optical data array installed in optical network | |
| JP5291100B2 (en) | Beat noise suppression system and method in line monitoring apparatus | |
| JP4467213B2 (en) | Optical transmission system | |
| JPH04150628A (en) | Wavelength stabilizing method for optical communication system and its circuit | |
| US20040005150A1 (en) | Optical signal transmission system, optical signal transmitter, optical signal receiver, method of transmitting optical signal and method of receiving optical signal | |
| US20030067649A1 (en) | Ring network using multi-wavelength generator | |
| EP0751635A2 (en) | Supervisory apparatus for wavelength-division-multiplexed optical data communications | |
| JPH03258036A (en) | Monitor system for optical transmission line | |
| WO2020137821A1 (en) | Optical transmission device and optical transmission method | |
| JPH07183871A (en) | Wavelength multiplexed optical communication system | |
| JPH11243374A (en) | Optical signal transmission system and optical signal transmitting device used therein | |
| JPH08298486A (en) | Monitor method for optical repeater and its system | |
| JP2000228649A (en) | Optical wdm transmission system and optical transmission device and method | |
| US5463488A (en) | Distribution of clock signals by pump power modulation in an optically amplified network | |
| WO2022153349A1 (en) | Light source device, optical device, control light generation method, and monitoring light generation method | |
| JPH03258038A (en) | Monitor system for optical fiber relay transmission line | |
| JPH02270427A (en) | Optical submarine repeater | |
| JP2591146B2 (en) | Monitoring method for Hikari Low Cable System | |
| JP2556124B2 (en) | Optical submarine repeater |