JPH03280731A - Optical fiber relay system - Google Patents
Optical fiber relay systemInfo
- Publication number
- JPH03280731A JPH03280731A JP2082649A JP8264990A JPH03280731A JP H03280731 A JPH03280731 A JP H03280731A JP 2082649 A JP2082649 A JP 2082649A JP 8264990 A JP8264990 A JP 8264990A JP H03280731 A JPH03280731 A JP H03280731A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- signal
- control signal
- monitor control
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 36
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 19
- 230000008054 signal transmission Effects 0.000 claims description 11
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000006854 communication Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光ファイバー中継システムに関し、特に３Ｒ機
能を有する光中継器を備えた中継装置を介して単局間で
双方向通信を行なう光ファイバー中継システムに関する
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical fiber relay system, and particularly to an optical fiber relay system that performs bidirectional communication between single stations via a relay device equipped with an optical repeater having a 3R function. Regarding.
光ファイバー中継システムには、システムの保全及び障
害時の障害点探索を目的とした監視制御機能を備えてい
る。特に海底中継システムは深海数千ｍに布設され、直
接ケーブルや中継器の状況を調査することができない為
、監視制御機能は重要である。The optical fiber relay system is equipped with a monitoring and control function for the purpose of system maintenance and failure point detection in the event of a failure. In particular, submarine relay systems are installed several thousand meters deep under the sea, and the status of cables and repeaters cannot be directly investigated, so monitoring and control functions are important.
従来、この種の監視制御機能は、数百Ｍ ｂ ／ ｓ〜
数Ｇ ｂ ／ ｓで伝送される主信号に変調を施して監
視制御信号を送出し、また逆に各中継器のモニ夕信号を
主信号に変調を施し端局に送出ｉ〜て−た。Conventionally, this type of monitoring and control function has been performed at several hundred Mb/s
The main signal transmitted at several Gb/s was modulated to send out a monitoring control signal, and conversely, the main signal of each repeater was modulated and sent to the terminal station.
上述した従来の光ファイバー中継システムは、主信号に
対し変調を施す為、主信号伝送路に変復調回路を挿入す
る必要があり、主信号伝送に９化を生じない様高度な技
術を要求される。特にインサービスで監視制御を行う為
には、主信号を木殊なコード体系（例えば２４ＢＩＰ）
にする必史があり端局構成が複雑になるという欠点があ
る。The conventional optical fiber relay system described above modulates the main signal, so it is necessary to insert a modulation/demodulation circuit into the main signal transmission path, and advanced technology is required to prevent 9ization from occurring in the main signal transmission. In particular, in order to perform in-service monitoring and control, the main signal must be coded using a special code system (for example, 24BIP).
This has the disadvantage that the terminal configuration becomes complicated.
また、位相変調を施す場合は、中継器のジッタ特性まで
考慮しなければならないという欠点が夕る。Furthermore, when phase modulation is applied, there is a drawback that even the jitter characteristics of the repeater must be taken into consideration.
本発明の光ファイバー中継システムは、光ファイバー伝
送路に上りおよび下りそれぞれ少なくとも１個の３Ｂ、
機能を有する光中継器を配設した袴数の中継装置を接続
し端局間で双方向の光通信を行なう光ファイバー中継シ
ステムにおいて、１１３号伝送用の光ファイバー及び光
中継器がら独立１゜てシステムの監視制御信号を伝送づ
る専用の光ファイバーと、前記専用の光ファイバーに接
続され前記光中継器と同一の前記中継装置に実装置、て
前記監視制御信号に自己の属する前記中継装置で取得す
るシステム監視用のモニタ情報を含ませて送出する上り
および下りそれぞｔ１１個の光ファイバーアンプと、前
記端局に実装され前記監視制御信号を送出するとともに
前記光ファイバーアンプから提供されるモニタ情報を受
けて前記中継装置を含む光ファイバー伝送路の状態を監
視する監視信号伝送装置とを備えて構成される。The optical fiber relay system of the present invention includes at least one 3B in each upstream and downstream optical fiber transmission line,
In an optical fiber relay system that connects a number of relay devices equipped with functional optical repeaters and performs bidirectional optical communication between end stations, the optical fiber and optical repeater for No. 113 transmission are used as an independent system. a dedicated optical fiber for transmitting a monitoring control signal; a real device connected to the dedicated optical fiber and connected to the same repeating device as the optical repeater; system monitoring in which the monitoring control signal is acquired by the repeating device to which it belongs t11 optical fiber amplifiers each for uplink and downlink transmitting the monitor information including the monitor information for the relay; and a monitoring signal transmission device that monitors the state of the optical fiber transmission line including the device.
次に本発明について図面を参照して説明する。 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構成を示すブロック図であ
る。第１図に示す実施例は、端局Ａ、 Ｂ間を光ファイ
バー２１へ−２６及び中継装置７，８で中継伝送する場
合を示１−２端局１００ Ｂ 、端局］、 ＯＯＢ内の
主信号伝送装置１〜４において主信号の送受を行ない、
各中継装置内の３Ｂ機能を持つ３Ｒ中継器９〜１６で主
信号の中継伝送を行なう。３Ｂ機能とは、波形等化（Ｒ
ｅｓｈａｐｉｎｇ） 、 ’Ａ別再再生Ｒｅｇｅｎｅｒ
ａｔ−ｉｎｇ＞およびタイミング再生（Ｒｅｔｉｍｉｎ
ｇ）をいう。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The embodiment shown in FIG. 1 shows a case in which relay transmission is performed between terminal stations A and B using an optical fiber 21 -26 and relay devices 7 and 8. The signal transmission devices 1 to 4 transmit and receive main signals,
The main signal is relayed and transmitted by 3R repeaters 9 to 16 having a 3B function in each repeater. The 3B function is waveform equalization (R
eshaping), 'A Regener
at-ing> and timing regeneration (Retiming)
g).
一方、端局Ａ１．０ＯＡ、端局Ｂ１００Ｂ内の監視信号
伝送装置ら、６によって監視制御信号の送受を行ない、
監視信号用の光ファイバー２５゜２６（但し、主信号用
と特に異なるファイバーである必要はなく、同一特性、
構造で良い）にて伝送を行ない、３Ｒ中継器９へ、１６
と同一中継装置内に設けた光ファイバーアンプ１７．１
８ならびに１９．２０にて監視制御信号の増幅中継を行
つ。On the other hand, the supervisory signal transmission device 6 in the terminal station A1.0OA and the terminal station B100B transmits and receives supervisory control signals,
Optical fiber 25°26 for monitoring signals (however, it does not have to be a different fiber from the one used for main signals; it must have the same characteristics,
(any structure is fine), and transmits to 3R repeater 9, 16
Optical fiber amplifier 17.1 installed in the same repeater as
8 and 19.20, amplification and relay of supervisory control signals will be carried out.
第２図は第１−図の実施例における光ファ・イバーアン
ブの構成を示すブロック図である。第２図に示す光ファ
イバーアンプは、監視信号伝送装置５．６からの監視信
号入力を受けてボンピング光源３１の出力と合波出力す
る光合波器２７と、希土類ドープファイバーまたとえば
Ｅｒドープファイバーを利用する希土類ドープファイバ
ー２８と、希土類ドープファイバー２８の発振出方がら
自己の属する中継装置向けの監視制御信号をフィルタリ
ングして抽出する光フィルタ２９と、光フィルタ２９で
抽出した監視制御信号を分波する光分波器３０と、光分
波器３ｏの出力を光−電気変換して出力する光検出器３
３と、自己の属する中継装置に配設した３Ｒ中継器９〜
１６から受ける動作モニタ用のモニタ信号を受けて、モ
ニタ信号の電圧等の大きさに対応して発振器３２の発振
周波数を可変とする発振周波数設定信号を出力する監視
制御回路３４と、発振器３２と、発振器３２の発振出力
により変調を施されボンピング出力を発生し、光合波器
２７を介して希土類ドープファイバー２８を光ファイバ
ー発振させるボンピング光源３１を備えて成る。FIG. 2 is a block diagram showing the configuration of the optical fiber amplifier in the embodiment shown in FIGS. The optical fiber amplifier shown in FIG. 2 utilizes an optical multiplexer 27 that receives a supervisory signal input from a supervisory signal transmission device 5.6 and outputs the multiplexed signal with the output of the bombing light source 31, and a rare earth-doped fiber, such as an Er-doped fiber. an optical filter 29 that filters and extracts a supervisory control signal for the repeater to which it belongs based on the way the rare earth doped fiber 28 oscillates; and an optical filter 29 that demultiplexes the supervisory control signal extracted by the optical filter 29. An optical demultiplexer 30 and a photodetector 3 that converts the output of the optical demultiplexer 3o into electricity and outputs it.
3 and the 3R repeater 9~ installed in the relay device to which it belongs
a monitor control circuit 34 that receives a monitor signal for operation monitoring from the oscillator 16 and outputs an oscillation frequency setting signal that varies the oscillation frequency of the oscillator 32 in accordance with the magnitude of the voltage or the like of the monitor signal; , a bombing light source 31 that is modulated by the oscillation output of an oscillator 32 to generate a bombing output, and causes the rare earth doped fiber 28 to oscillate through the optical multiplexer 27.
第２図に示く構成の光ファイバーアンプは、その監視制
御信号出力を光分波器３ｏで２分岐し、端局から送信さ
れた自己の属する中継装置向けの監視制御信号を光分波
器３３で光−電気変換し、その電気信号を監視制御回路
３４に入力する。例えば、主信号を中継する中継装置の
各種モニタを行う場合、モニタ信号として供給されるモ
ニタ電圧に応じ発振器３２の発振周波数を可変とする発
振周波数設定信号を圧力し、発振器３２によりポンピン
グ光源３１に変調を施すことにより、監視制御信号に振
幅変調をかけ、次段の端局に送る。The optical fiber amplifier configured as shown in FIG. performs optical-to-electrical conversion, and inputs the electrical signal to the monitoring control circuit 34. For example, when performing various monitoring of a relay device that relays a main signal, an oscillation frequency setting signal is applied that varies the oscillation frequency of the oscillator 32 according to the monitor voltage supplied as a monitor signal, and the oscillator 32 supplies the pumping light source 31 with By applying modulation, amplitude modulation is applied to the supervisory control signal and the signal is sent to the next stage terminal station.
このような光ファイバーアンプは、伝送周波数の自由選
択可能な為、監視制御信号の送信及びモニタの応答信号
周波数は主信号のビットレートに関係なく任意に選択で
き、主信号のインサービス状態に同等影響を及ぼすこと
なく監視を行なうことができる。Since such optical fiber amplifiers can freely select the transmission frequency, the transmission frequency of the supervisory control signal and the response signal frequency of the monitor can be arbitrarily selected regardless of the bit rate of the main signal, and the in-service state of the main signal is equally affected. Monitoring can be carried out without affecting the environment.
以上説明したように本発明は、主信号伝送用とは別に、
監視制御信号用として専用の光ファイバーと光ファイリ
ングアンプを配設することにより主信号の回路及びビッ
トレートに関係なく監視制御回路の設計、運用が可能で
あり、回路構成を著しく簡略化できる効果がある。As explained above, the present invention, in addition to main signal transmission,
By installing a dedicated optical fiber and optical filing amplifier for supervisory control signals, it is possible to design and operate the supervisory control circuit regardless of the main signal circuit and bit rate, which has the effect of significantly simplifying the circuit configuration. .
第１図は本発明の一実施例の構成を示すプロ・ンク図、
第２図は第１図の実施例における光ファイバーアンプの
構成例を示すブロック図である。
１〜４・・・主信号伝送装置、５．６・・・監視信号伝
送装置、７，８・・・中継装置、９〜１６・・・３Ｒ光
中継器、１７〜２０・・・光ファイバーアンプ、２１〜
２６・・・光ファイバー、２７・・・光合成器、２８・
・・希土類ドープファイバー、２９・・・光フィルタ、
３０・・・光分波器、３１・・・ボンピング光源、３２
・・・発振器、３３・・・光検出器、３４・・・監視制
御回路。FIG. 1 is a diagram showing the configuration of an embodiment of the present invention;
FIG. 2 is a block diagram showing an example of the configuration of the optical fiber amplifier in the embodiment of FIG. 1. 1-4... Main signal transmission device, 5.6... Monitoring signal transmission device, 7, 8... Relay device, 9-16... 3R optical repeater, 17-20... Optical fiber amplifier , 21~
26... Optical fiber, 27... Photosynthesizer, 28.
... Rare earth doped fiber, 29... Optical filter,
30... Optical demultiplexer, 31... Bumping light source, 32
...Oscillator, 33...Photodetector, 34...Monitoring control circuit.
Claims (1)
も１個の３Ｒ機能を有する光中継器を配設した複数の中
継装置を接続し端局間で双方向の光通信を行なう光ファ
イバー中継システムにおいて、主信号伝送用の光ファイ
バー及び光中継器から独立してシステムの監視制御信号
を伝送する専用の光ファイバーと、前記専用の光ファイ
バーに接続され前記光中継器と同一の前記中継装置に実
装して前記監視制御信号に自己の属する前記中継装置で
取得するシステム監視用のモニタ情報を含ませて送出す
る上りおよび下りそれぞれ１個の光ファイバーアンプと
、前記端局に実装され前記監視制御信号を送出するとと
もに前記光ファイバーアンプから提供されるモニタ情報
を受けて前記中継装置を含む光ファイバ伝送路の状態を
監視する監視信号伝送装置とを備えて成ることを特徴と
する光ファイバー中継システム。For main signal transmission in an optical fiber relay system that connects multiple repeaters each equipped with at least one optical repeater with 3R function on an optical fiber transmission line and performs bidirectional optical communication between end stations. A dedicated optical fiber that transmits system monitoring and control signals independently from the optical fiber and optical repeater; one upstream and one downstream optical fiber amplifier that includes and transmits monitor information for system monitoring acquired by the relay device to which the relay device belongs; and one optical fiber amplifier installed in the terminal station that transmits the monitoring control signal and provides it from the optical fiber amplifier. an optical fiber relay system, comprising: a supervisory signal transmission device that monitors the state of an optical fiber transmission path including the relay device in response to monitor information sent to the optical fiber relay system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082649A JPH03280731A (en) | 1990-03-29 | 1990-03-29 | Optical fiber relay system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082649A JPH03280731A (en) | 1990-03-29 | 1990-03-29 | Optical fiber relay system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03280731A true JPH03280731A (en) | 1991-12-11 |
Family
ID=13780280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2082649A Pending JPH03280731A (en) | 1990-03-29 | 1990-03-29 | Optical fiber relay system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03280731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668658A (en) * | 1995-02-28 | 1997-09-16 | Nec Corporation | Transfer of repeater information signals in in-line optical amplifier repeater system |
| JP2010041214A (en) * | 2008-08-01 | 2010-02-18 | Nec Corp | Transmitter and distributed management method for the same |
-
1990
- 1990-03-29 JP JP2082649A patent/JPH03280731A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668658A (en) * | 1995-02-28 | 1997-09-16 | Nec Corporation | Transfer of repeater information signals in in-line optical amplifier repeater system |
| JP2010041214A (en) * | 2008-08-01 | 2010-02-18 | Nec Corp | Transmitter and distributed management method for the same |
| US8315173B2 (en) | 2008-08-01 | 2012-11-20 | Nec Corporation | Transmission apparatus and method for distributed management thereof |
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