JPH04922A - Optical repeater - Google Patents
Optical repeaterInfo
- Publication number
- JPH04922A JPH04922A JP2102284A JP10228490A JPH04922A JP H04922 A JPH04922 A JP H04922A JP 2102284 A JP2102284 A JP 2102284A JP 10228490 A JP10228490 A JP 10228490A JP H04922 A JPH04922 A JP H04922A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- output
- signal
- photocoupler
- outputs
- 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 52
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Light Receiving Elements (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、光中継器に関し、特に減衰した光信号を増幅
し出力する光中継器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical repeater, and more particularly to an optical repeater that amplifies and outputs an attenuated optical signal.
光中継器は、減衰した光信号を一度受信素子で受信して
電気信号に戻し、この電気信号を再生増幅して発光素子
に印加することにより、再生光パルス波形を得る方法が
用いられる。これは再生中継といわれ、タイミング抽出
（Ｒｅｔｉｍｉｎｇ） 、等価増幅または波形整形（Ｒ
ｅｓｈａｐｉｎｇ）および識別再生（Ｒｅｇｅｎｅｒａ
ｔｉｎｇ）の３つの機能から成り、３Ｒ中継器といわれ
る。The optical repeater uses a method of obtaining a reproduced optical pulse waveform by once receiving an attenuated optical signal with a receiving element, converting it back into an electrical signal, reproducing and amplifying this electrical signal, and applying it to a light emitting element. This is called regenerative relay, and involves timing extraction (Retiming), equivalent amplification, or waveform shaping (R
eshaping) and identification regeneration (Regenera
It consists of three functions (Ting) and is called a 3R repeater.
従来の３Ｒ中継器における監視制御回路は、レーザダイ
オード（ＬＤ）のバイアス電流、光主信号の入力レベル
、出力レベル及び温度等の監視機能をもっており監視し
た情報を電圧信号にへ関する。この電圧信号が電気信号
に変換され、再生増幅された主信号の変調（周波数変調
、位相変調等）をかけこれを再び光信号に変換し送出し
ていたが、減衰した光信号を直接増幅する光アンプを用
いた中継システムでは監視制御及び応答信号の変調方式
は確立していない。The monitoring control circuit in the conventional 3R repeater has a monitoring function of the bias current of the laser diode (LD), the input level of the optical main signal, the output level, the temperature, etc., and relates the monitored information to the voltage signal. This voltage signal is converted into an electrical signal, and the regeneratively amplified main signal is modulated (frequency modulation, phase modulation, etc.) and then converted back into an optical signal and sent out.However, the attenuated optical signal is directly amplified. For relay systems using optical amplifiers, monitoring control and response signal modulation methods have not been established.
上述した従来の光アンプを用いた光中継器は、３Ｒ中継
器と同様に光信号を１度電気信号に変換し、電気信号に
おいて、監視制御及び応答信号により変調をかけるので
回路規模が大きくなり、また、ビットレートに関係なく
用いることができるという光アンプの大きな利点を失う
という問題があった。The above-mentioned optical repeater using the conventional optical amplifier converts the optical signal into an electrical signal once, similar to the 3R repeater, and modulates the electrical signal using the monitoring control and response signals, resulting in a large circuit scale. In addition, there was a problem in that the great advantage of the optical amplifier, which is that it can be used regardless of the bit rate, is lost.
本発明の光中継器は、伝送路から入力の光信号を増幅す
る光アンプと、この光アンプからの出力を２方向に分岐
出力する光カプラーと、この光カプラーの一方の出力に
より光信号の電力を監視し応答信号として出力する監視
制御回路と、前記光カプラーの他方の出力を前記応答信
号により変調して出力する電気光学結晶とを有している
。The optical repeater of the present invention includes an optical amplifier that amplifies an optical signal input from a transmission line, an optical coupler that branches the output from this optical amplifier into two directions, and an optical repeater that uses the output of one of the optical couplers to output an optical signal. It has a monitoring control circuit that monitors power and outputs it as a response signal, and an electro-optic crystal that modulates the other output of the optical coupler with the response signal and outputs it.
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ブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
本実施例は、伝送路から端子ＩＮに入力の減衰した光信
号を増幅する光アンプ１と、光アンプ１からの出力を２
方向に分岐出力する光カプラ−２と、光カプラ−２の一
方の出力により光信号の電力を監視しモニタ情報の応答
信号５として出力する監視制御回路４と、光カプラ−２
の他方の出力を応答信号５により変調して端子ＯＵＴに
出力する電気光学結晶３とを有して精成される。In this embodiment, an optical amplifier 1 amplifies an attenuated optical signal input from a transmission line to a terminal IN, and an output from the optical amplifier 1 is
an optical coupler 2 that outputs branches in the directions; a monitoring control circuit 4 that monitors the power of the optical signal by one output of the optical coupler 2 and outputs it as a response signal 5 of monitor information; and the optical coupler 2.
and an electro-optic crystal 3 which modulates the other output by the response signal 5 and outputs it to the terminal OUT.
次に動作について説明する。Next, the operation will be explained.
送信側端局から中継器の光出力電力モニターの命令（コ
マンド）が送出されると、主信号光から光カプラ−２で
分岐されたコマンドが監視制御回路４に入力される。監
視制御回路４は、このコマンドを受信し、光出力電力の
モニターを開始し、その情報を電圧の信号に変換して、
監視制御の応答信号５として出力する。この応答信号５
は、電気光学結晶３のコントロール端子に入力され、光
カプラ−２からの主信号光が変調（例えば位相変調）さ
れ端子ＯＵＴから出力される。When an instruction (command) for monitoring the optical output power of the repeater is sent from the transmitting side terminal station, the command branched from the main signal light by the optical coupler 2 is input to the monitoring control circuit 4. The supervisory control circuit 4 receives this command, starts monitoring the optical output power, converts the information into a voltage signal, and
It is output as a response signal 5 for supervisory control. This response signal 5
is input to the control terminal of the electro-optic crystal 3, and the main signal light from the optical coupler 2 is modulated (for example, phase modulated) and output from the terminal OUT.
このようにすると受信側端局では、この変調（ここでは
位相変調）された信号を復調し、その電圧値より中継器
の光出力電力を知ることができる。In this way, the receiving terminal station can demodulate the modulated (here, phase modulated) signal and determine the optical output power of the repeater from the voltage value.
以上説明したように本発明は、光アンプを用いた中継器
における監視制御回路からの光信号電力のモニタ情報で
主信号の光信号を変調して送出することにより、主信号
のビットレートに無関係に使用できるので光アンプを用
いた中継器の利点を失うことがなく、また、光アンプを
用いるため、各種変調された信号を容易に伝送でき、し
かも、インサービス時にデータを送れるという効果を有
する。As explained above, the present invention modulates and transmits the optical signal of the main signal using the monitor information of the optical signal power from the supervisory control circuit in the repeater using the optical amplifier, thereby making it independent of the bit rate of the main signal. Since it can be used for multiple applications, it does not lose the advantages of repeaters using optical amplifiers, and since it uses optical amplifiers, it can easily transmit various modulated signals, and has the effect of being able to send data during in-service. .
第１図は本発明の一実施例を示すブロック図である。
１・・・光アンプ、２・・・光カプラ−，３・・・電気
光学結晶、４・・・監視制御回路、５・・・応答信号。FIG. 1 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Optical amplifier, 2... Optical coupler, 3... Electro-optic crystal, 4... Monitoring control circuit, 5... Response signal.
Claims (1)
光アンプからの出力を２方向に分岐出力する光カプラー
と、この光カプラーの一方の出力により光信号の電力を
監視し応答信号として出力する監視制御回路と、前記光
カプラーの他方の出力を前記応答信号により変調して出
力する電気光学結晶とを有することを特徴とする光中継
器。An optical amplifier that amplifies the optical signal input from the transmission line, an optical coupler that branches the output from this optical amplifier into two directions, and monitors the power of the optical signal using the output of one of the optical couplers and outputs it as a response signal. and an electro-optic crystal that modulates the other output of the optical coupler using the response signal and outputs the modulated output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102284A JPH04922A (en) | 1990-04-18 | 1990-04-18 | Optical repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102284A JPH04922A (en) | 1990-04-18 | 1990-04-18 | Optical repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04922A true JPH04922A (en) | 1992-01-06 |
Family
ID=14323312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2102284A Pending JPH04922A (en) | 1990-04-18 | 1990-04-18 | Optical repeater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522235A (en) * | 1991-07-15 | 1993-01-29 | Oki Electric Ind Co Ltd | Optical amplifier repeater |
| JP2002254094A (en) * | 2001-03-05 | 2002-09-10 | Mitsubishi Materials Corp | Sludge-transporting system and sludge-transporting container |
-
1990
- 1990-04-18 JP JP2102284A patent/JPH04922A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522235A (en) * | 1991-07-15 | 1993-01-29 | Oki Electric Ind Co Ltd | Optical amplifier repeater |
| JP2002254094A (en) * | 2001-03-05 | 2002-09-10 | Mitsubishi Materials Corp | Sludge-transporting system and sludge-transporting container |
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