JPH04127729A - Optical submarine repeater supervisory control signal transmission system - Google Patents
Optical submarine repeater supervisory control signal transmission systemInfo
- Publication number
- JPH04127729A JPH04127729A JP2249158A JP24915890A JPH04127729A JP H04127729 A JPH04127729 A JP H04127729A JP 2249158 A JP2249158 A JP 2249158A JP 24915890 A JP24915890 A JP 24915890A JP H04127729 A JPH04127729 A JP H04127729A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- output light
- polarization
- signal
- supervisory 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims description 12
- 230000008054 signal transmission Effects 0.000 title claims description 7
- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 230000010287 polarization Effects 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光海底中継器監視制御信号伝送方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an optical submarine repeater monitoring and control signal transmission system.
従来、この種の光海底中継器監視制御信号伝送方式とし
ては、いわゆるマーク率変調方式またはパリティバイオ
レーション方式がある。Conventionally, as this type of optical submarine repeater monitoring and control signal transmission system, there is a so-called mark rate modulation system or a parity violation system.
上述した従来のマーク率変調方式は回線サービス状態で
は使用できないという欠点があり、またパリティバイオ
レーション方式では複雑なビット操作が必要であるとい
う問題点があった。The conventional mark rate modulation method described above has the disadvantage that it cannot be used in a line service state, and the parity violation method has the problem of requiring complicated bit manipulation.
本発明の光海底中継器監視制御信号伝送方式は、電気デ
ータ信号を光データ信号に変換する半導体レーザと、前
記半導体し−ダの発振光の偏光方位を回転させるファラ
デー素子と、前記ファラデー素子に磁界を印加する電磁
石と、前記電磁石に偏光方位を制御する信号を印加する
監視制御信号発生回路と、前記ファラデー素子の出力光
の偏光状態を保持したまま伝送させる偏波面保存ファイ
バと、前記偏波面保存ファイバの出力光を２方向に分岐
するビームスプリッタと、前記ビームスプリッタの一方
の出力光を光電変換したのち電気データ信号を検出する
第１の受光器と、前記ビームスプリッタの他方の出力光
のうち一方向の偏光方位成分のみを取り出す偏光子と、
前記偏光子の出力光を光電変換する第２の受光器と、前
記受光器の出力信号から監視制御信号に一致した周波数
成分のみを取り出すバンドパスフィルタとを備えること
を特徴とする。The optical submarine repeater monitoring control signal transmission system of the present invention includes a semiconductor laser that converts an electrical data signal into an optical data signal, a Faraday element that rotates the polarization direction of the oscillated light of the semiconductor laser, and a Faraday element that rotates the polarization direction of the oscillated light of the semiconductor laser. an electromagnet that applies a magnetic field; a supervisory control signal generation circuit that applies a signal that controls the polarization direction to the electromagnet; a polarization-maintaining fiber that transmits the output light of the Faraday element while maintaining its polarization state; and the polarization plane. a beam splitter that splits the output light of the storage fiber into two directions; a first optical receiver that photoelectrically converts the output light of one of the beam splitters and then detects an electrical data signal; A polarizer that extracts only the polarization direction component in one direction,
It is characterized by comprising a second light receiver that photoelectrically converts the output light of the polarizer, and a bandpass filter that extracts only the frequency component matching the monitoring control signal from the output signal of the light receiver.
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図は本発明の光海底中継器監視制御信号伝送方式の
一実施例を示すフロック図、第２１２Ｉは第１図におけ
る主要信号波形図である。FIG. 1 is a block diagram showing an embodiment of the optical submarine repeater monitoring control signal transmission system of the present invention, and FIG. 212I is a main signal waveform diagram in FIG. 1.
本実施例は第１図に示すように、電気データ信号を光デ
ータ信号に変換する半導体し−サ１と、半導体レーザ１
の発振光の偏光方位を回転させるファラデー素子３と、
ファラデー素子３に磁界を印加する電磁石２と、電磁石
２に偏光方位を制御する監視制御信号ａを印加する監視
制御信号発生回路４と、ファラデー素子３の出力光すの
偏光状態を保持したまま伝送させる偏波面保存ファイバ
５と、偏波面保存ファイバ５の出力光を２方向に分岐す
るビームスプリッタ６と、ビームスプリッタ６の一方の
出力光を光電変換したのち電気データ信号を検出する第
１の受光器７と、ビームスプリッタ６の他方の出力光の
うち一方向の偏光方位成分Ｃのみを取り出す偏光子８と
、偏光子８の出力光を光電変換する第２の受光器つと、
受光器９の出力信号から監視制御信号ａに一致した周波
数成分ｄのみを取り出すバンドパスフィルタ１０とから
構成されている。As shown in FIG. 1, this embodiment includes a semiconductor laser 1 that converts an electrical data signal into an optical data signal,
a Faraday element 3 that rotates the polarization direction of the oscillated light;
An electromagnet 2 that applies a magnetic field to the Faraday element 3, a supervisory control signal generation circuit 4 that applies a supervisory control signal a that controls the polarization direction to the electromagnet 2, and a transmission while maintaining the polarization state of the output light of the Faraday element 3. a polarization-maintaining fiber 5, a beam splitter 6 that splits the output light of the polarization-maintaining fiber 5 into two directions, and a first light receiver that photoelectrically converts one of the output lights of the beam splitter 6 and then detects an electrical data signal. a polarizer 8 that extracts only the polarization direction component C in one direction from the other output light of the beam splitter 6, and a second light receiver that photoelectrically converts the output light of the polarizer 8.
It consists of a bandpass filter 10 that extracts only the frequency component d that matches the supervisory control signal a from the output signal of the optical receiver 9.
続いて本実施例の動作について第２図を併用して説明す
る。Next, the operation of this embodiment will be explained with reference to FIG. 2.
半導体レーザ１の出力光はファラデー素子３に入力され
る。ここで半導体レーザ１は出力光の偏光方位が紙面に
水平となるように固定されている。監視制御信号発生回
路４から監視制御信号ａを電磁石２に印加する。電磁石
２は印加された監視制御信号ａに応じて磁界を発生して
半導体レーザ１の出力光の偏光方位を９０°回転させて
ファラデー素子３の出力光すを得る。この出力光すは偏
波面保存ファイバ５によって伝送された後、ビームスプ
リッタ６で２方向に分岐される。分岐された光の”一方
は受光器７で光電変換されたのちデータ信号が検出され
る。また他方の光は偏光方位が紙面と垂直方向に調整さ
れた偏光子８に入力され、その出力光Ｃ（紙面に垂直な
直線偏光成分）のみが出力される。この出力光Ｃは受光
器９で光電変換された後、バンドパスフィルタ１０によ
って監視制御信号ａと一致した周波数成分ｄを検出する
。The output light of the semiconductor laser 1 is input to the Faraday element 3. Here, the semiconductor laser 1 is fixed so that the polarization direction of the output light is parallel to the plane of the paper. A supervisory control signal a is applied from a supervisory control signal generation circuit 4 to the electromagnet 2. The electromagnet 2 generates a magnetic field in response to the applied supervisory control signal a, rotates the polarization direction of the output light of the semiconductor laser 1 by 90 degrees, and obtains the output light of the Faraday element 3. This output light beam is transmitted by a polarization maintaining fiber 5 and then split into two directions by a beam splitter 6. One of the branched lights is photoelectrically converted by the photoreceiver 7, and then a data signal is detected.The other light is input to a polarizer 8 whose polarization direction is adjusted perpendicular to the plane of the paper, and its output light is Only C (a linearly polarized light component perpendicular to the plane of the paper) is output. After this output light C is photoelectrically converted by a light receiver 9, a bandpass filter 10 detects a frequency component d that coincides with the supervisory control signal a.
以上説明したように本発明は、半導体レーザの発振光の
偏光方位を監視制御信号で変調し、これを伝送した後に
復調するようにしたので、回線サービス状態で使用でき
、かつ複雑なビット操作か不要になるという効果を有す
る。As explained above, the present invention modulates the polarization direction of the oscillated light from a semiconductor laser using a supervisory control signal, and demodulates the signal after transmitting it, so that it can be used in a line service state and does not require complicated bit operations. This has the effect of making it unnecessary.
第１図は本発明の光海底中継器監視制御信号伝送方式の
一実施例を示すブロック図、第２図は第１図における主
要信号波形図である。
１・・・半導体レーザ、２・・・電磁石、３・・・ファ
ラデー素子、４・・・監視制御信号発生回路、５・・・
偏波面保存ファイバ、６・・・ビームスプリッタ、７，
９・・・受光器、８・・・偏光子、１０・・・バンドパ
スフィルタ。FIG. 1 is a block diagram showing an embodiment of the optical submarine repeater monitoring control signal transmission system of the present invention, and FIG. 2 is a main signal waveform diagram in FIG. 1. DESCRIPTION OF SYMBOLS 1... Semiconductor laser, 2... Electromagnet, 3... Faraday element, 4... Supervisory control signal generation circuit, 5...
polarization maintaining fiber, 6...beam splitter, 7,
9... Light receiver, 8... Polarizer, 10... Bandpass filter.
Claims (1)
と、前記半導体レーダの発振光の偏光方位を回転させる
ファラデー素子と、前記ファラデー素子に磁界を印加す
る電磁石と、前記電磁石に偏光方位を制御する信号を印
加する監視制御信号発生回路と、前記ファラデー素子の
出力光の偏光状態を保持したまま伝送させる偏波面保存
ファイバと、前記偏波面保存ファイバの出力光を２方向
に分岐するビームスプリッタと、前記ビームスプリッタ
の一方の出力光を光電変換したのち電気データ信号を検
出する第１の受光器と、前記ビームスプリッタの他方の
出力光のうち一方向の偏光方位成分のみを取り出す偏光
子と、前記偏光子の出力光を光電変換する第２の受光器
と、前記受光器の出力信号から監視制御信号い一致した
周波数成分のみを取り出すバンドパスフィルタとを備え
ることを特徴とする光海底中継器監視制御信号伝送方式
。A semiconductor laser that converts an electrical data signal into an optical data signal, a Faraday element that rotates the polarization direction of the oscillated light of the semiconductor radar, an electromagnet that applies a magnetic field to the Faraday element, and a signal that controls the polarization direction of the electromagnet. a supervisory control signal generating circuit that applies a polarization state of the output light of the Faraday element, a polarization maintaining fiber that transmits the output light of the Faraday element while maintaining the polarization state, a beam splitter that splits the output light of the polarization maintaining fiber into two directions; a first light receiver that photoelectrically converts one output light of the beam splitter and then detects an electrical data signal; a polarizer that extracts only a polarization azimuth component in one direction from the other output light of the beam splitter; An optical submarine repeater monitoring control system comprising: a second photoreceiver that photoelectrically converts output light from the photoreceiver; and a bandpass filter that extracts only frequency components that match the monitoring control signal from the output signal of the photoreceiver. Signal transmission method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2249158A JP3060510B2 (en) | 1990-09-19 | 1990-09-19 | Optical submarine repeater monitoring control signal transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2249158A JP3060510B2 (en) | 1990-09-19 | 1990-09-19 | Optical submarine repeater monitoring control signal transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04127729A true JPH04127729A (en) | 1992-04-28 |
| JP3060510B2 JP3060510B2 (en) | 2000-07-10 |
Family
ID=17188772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2249158A Expired - Lifetime JP3060510B2 (en) | 1990-09-19 | 1990-09-19 | Optical submarine repeater monitoring control signal transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3060510B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9522237B2 (en) * | 2005-01-07 | 2016-12-20 | Becton, Dickinson And Company | Positive displacement flush syringe |
-
1990
- 1990-09-19 JP JP2249158A patent/JP3060510B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3060510B2 (en) | 2000-07-10 |
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