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JPH03235536A - Optical output control system - Google Patents

Optical output control system

Info

Publication number
JPH03235536A
JPH03235536A JP2031808A JP3180890A JPH03235536A JP H03235536 A JPH03235536 A JP H03235536A JP 2031808 A JP2031808 A JP 2031808A JP 3180890 A JP3180890 A JP 3180890A JP H03235536 A JPH03235536 A JP H03235536A
Authority
JP
Japan
Prior art keywords
optical
output
signal
electro
input
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
Application number
JP2031808A
Other languages
Japanese (ja)
Inventor
Akihiko Ichikawa
明彦 市川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP2031808A priority Critical patent/JPH03235536A/en
Publication of JPH03235536A publication Critical patent/JPH03235536A/en
Pending legal-status Critical Current

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  • Light Guides In General And Applications Therefor (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To prevent retinopathy even when an optical fiber is inadvertently observed and to restart communication automatically when a line fault is recovered by using an output of an electrooptical converter into a pilot light of a low output when the line fault takes place. CONSTITUTION:A control means 50 upon the receipt of an input light interrupt signal from an optical signal detection means 40 via a line 60 outputs an output of an electrooptic converter 10 as a pilot light of a low output. When the fault is restored and the optical signal detection means 40 detects a pilot light of a low output, the transmission of an optical input interrupt signal is stopped and the control means 50 restores the output of the electrooptic converter 10 to a normal output. Thus, even when an optical fiber is observed directly and inadvertently, no retinas fault takes place and the communication is automatically restarted when the line fault is recovered.

Description

【発明の詳細な説明】 〔概 要〕 電気入力信号を光出力信号に変換して送出する電光変換
装置と、入力した光信号を電気出力信号に変換して出力
する光電変換装置と、光ファイバよりなる光通信システ
ムの出力制御方式に関し、線路障害等が発生したときに
電光変換装置の出力を低光出力のパイロット光にするこ
とにより誤って光ファイバを覗いても、網膜障害を起こ
すことがなく、且つ線路障害が復旧したときには自動的
に通信を再開できる光出力制御方式を提供することを目
的とし、 光電変換装置に、入力光信号が断になったときに、光入
力断信号を送出する光信号検出手段と、電光変換装置に
、光入力断信号により、低光出力のパイロット光とする
制御手段と、光信号検出手段と制御手段とを接続する線
路を設け、制御手段は線路を介して、入力光断信号を受
信したときには、電光変換装置の出力を低光出力のパイ
ロット光とし、光信号検出手段が低光出力のパイロット
光を検出したときには、光入力断信号の送出を停止し、
制御手段は、電光変換装置の出力を正常出力に復旧させ
るように構成する。
[Detailed Description of the Invention] [Summary] An electro-optical conversion device that converts an electrical input signal into an optical output signal and sends it out, a photoelectric conversion device that converts an input optical signal into an electrical output signal and outputs it, and an optical fiber. Regarding the output control method of the optical communication system, when a line failure occurs, the output of the electro-optical converter is changed to a pilot light with low optical output, so that even if you accidentally look into the optical fiber, it will not cause retinal damage. The purpose of this invention is to provide an optical output control method that can automatically restart communication when the line fault is restored. an optical signal detection means for controlling the electro-optical conversion device; a control means for controlling the electro-optic converter to produce pilot light with a low optical output in response to an optical input disconnection signal; and a line connecting the optical signal detection means and the control means, the control means controlling the line. When an input optical disconnection signal is received through the optical converter, the output of the electro-optical converter is a low optical output pilot light, and when the optical signal detection means detects a low optical output pilot light, the transmission of the optical input disconnection signal is stopped. death,
The control means is configured to restore the output of the electro-optical conversion device to normal output.

〔産業上の利用分野] 本発明は、電気入力信号を光出力信号に変換して送出す
る電光変換装置と、入力した光信号を電気出力信号に変
換して出力する光電変換装置と、光ファイバよりなる光
通信システムの出力制御方式に関する。
[Field of Industrial Application] The present invention relates to an electro-optical conversion device that converts an electrical input signal into an optical output signal and sends it out, a photoelectric conversion device that converts an input optical signal to an electrical output signal and outputs it, and an optical fiber. This invention relates to an output control method for an optical communication system.

近年光通信システムで使用する電光変換素子の光出力は
、無中継伝送距離を延長するためにますます増大してい
る。
In recent years, the optical output of electro-optical conversion elements used in optical communication systems has been increasing more and more in order to extend the non-repeater transmission distance.

そこで、光コネクタを外した時や、光フアイバ断時に誤
って光ファイバを覗き込んだ時でも、眼の網膜に障害を
与えないように、光出力を制御する機能を取り入れる必
要性が高まっており、且つ光ファイバが正常となったと
きには、出力を自動的に復旧させることが要求されてい
る。
Therefore, there is an increasing need to incorporate a function to control the optical output so that the retina of the eye will not be damaged even when the optical connector is removed or the optical fiber is broken and the optical fiber is accidentally peered into. , and when the optical fiber becomes normal, it is required to automatically restore the output.

第3図は光フアイバケーブルの構成の例を説明する図で
あり、31は光ファイバで、4芯の光ファイバが金属チ
ューブ32に収容され、金属チューブ32が4本で16
芯の光フアイバケーブルを構成している。61は、ケー
ブルの強度を増すためのメタリックワイヤの介在対であ
り、図においては3本の介在対がある。33.34は外
部を保護する金属管、ポリエチレンシースである。
FIG. 3 is a diagram illustrating an example of the configuration of an optical fiber cable, where 31 is an optical fiber, 4 optical fibers are housed in a metal tube 32, and 4 metal tubes 32 make up 16 optical fibers.
It constitutes the core optical fiber cable. Reference numeral 61 indicates intervening pairs of metallic wires to increase the strength of the cable, and there are three intervening pairs in the figure. 33 and 34 are metal tubes and polyethylene sheaths that protect the outside.

図中の同じ図形は同一物を示す。The same figures in the figures indicate the same thing.

〔従来の技術] 第4図は従来例の動作を説明する図である。[Conventional technology] FIG. 4 is a diagram explaining the operation of the conventional example.

第4図に示す従来例は、電気入力信号を光出力信号に変
換して出力する電光変換装置(図中E10として示す)
10と、 光入力信号を電気出力信号に変換して出力する光電変換
装置(図中0/Eとして示す)20と、光ファイバ30
と、 光電変換装置の光入力信号断を検出したときに、「オン
」となるリレー(図中Rとして示す)41と、リレー4
1の接点42と、 リレー41の接点42が「オン」となったときに電光変
換装置10の出力を停止させる停止回路51Aと、 リレー41の接点42と、停止回路51Aを接続する光
ケーブルの中の介在対61より構成している。
The conventional example shown in FIG. 4 is an electro-optical conversion device (shown as E10 in the figure) that converts an electrical input signal into an optical output signal and outputs it.
10, a photoelectric conversion device (shown as 0/E in the figure) 20 that converts an optical input signal into an electrical output signal and outputs it, and an optical fiber 30.
, a relay 41 (indicated as R in the figure) that turns on when a disconnection of the optical input signal of the photoelectric conversion device is detected, and a relay 4
1, a stop circuit 51A that stops the output of the electro-optical converter 10 when the contact 42 of the relay 41 is turned on, and an optical cable that connects the contact 42 of the relay 41 and the stop circuit 51A. It is composed of an intervening pair 61 of.

上述の構成による動作を第4図により説明する。The operation of the above configuration will be explained with reference to FIG.

(1)正常状態で通信を行っており、リレー41は「オ
フ」の状態を継続している。
(1) Communication is performed in a normal state, and the relay 41 continues to be in the "off" state.

(2)例えば、光ファイバ30が断となったときには、
光電変換装置20の光入力信号断を検出し、リレー41
が「オン」となり、その接点42が「閉」となる。
(2) For example, when the optical fiber 30 is disconnected,
Detects a disconnection of the optical input signal of the photoelectric conversion device 20 and activates the relay 41.
becomes "on" and its contact 42 becomes "closed".

(3)停止回路51Aは介在対61を経由して、接点4
2が「閉」となったことを検出すると、電光変換装置1
0の出力を停止させる。
(3) The stop circuit 51A is connected to the contact 4 via the intervening pair 61.
2 is "closed", the electro-optical conversion device 1
Stop outputting 0.

(4)障害が発生したので電光変換装置10、光電変換
装置20及び光ファイバ30の設置場所に保守技術者が
出向いて、お互いに連絡を取り合いながら障害を修復さ
せた後、電光変換装置10の出力を正常状態に復旧させ
通信を再開する。
(4) When a fault has occurred, a maintenance engineer goes to the installation location of the electro-optic converter 10, photo-electric converter 20, and optical fiber 30, repairs the fault while communicating with each other, and then installs the electro-optical converter 10. Restores output to normal state and resumes communication.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述の従来例では、例えば、光ファイバ30の断等が起
こると、入力光信号断を検出して停止回路51Aにより
電光変換装置10の出力を停止するのみである。
In the above-mentioned conventional example, when the optical fiber 30 is disconnected, for example, the input optical signal disconnection is detected and the output of the electro-optical converter 10 is simply stopped by the stop circuit 51A.

したがって、このような障害が発生したときに体重光変
換装置10、光電変換装置20及び光ファイバ30の設
置場所まで、保守技術者が出向いてゆき、連絡を取り合
いながら障害の修復作業を行うので長い時間がかかる。
Therefore, when such a failure occurs, a maintenance engineer goes to the installation location of the weight-to-light conversion device 10, photoelectric conversion device 20, and optical fiber 30 and repairs the failure while communicating with each other, which takes a long time. it takes time.

また、電光変換装置IOの出力を正常状態の高出力のと
きに、誤って光ファイバ30を覗き込むと網膜に損傷を
与えることがある。
Furthermore, if the user accidentally looks into the optical fiber 30 when the output of the electro-optical converter IO is in a normal high output state, the retina may be damaged.

本発明は、線路障害等が発生したときに電光変換装置の
出力を低光出力のパイロット光にすることにより誤って
光ファイバを覗いても、網膜障害を起こすことがなく、
且つ線路障害が復旧したときには自動的に通信を再開で
きる光出力制御方式を提供することを目的とする。
According to the present invention, when a line failure or the like occurs, the output of the electro-optical converter is made into a pilot light with a low optical output, so that even if someone accidentally looks into the optical fiber, no retinal damage will occur.
Another object of the present invention is to provide an optical output control method that can automatically restart communication when a line fault is restored.

〔課題を解決するための手段] 第1図は本発明の詳細な説明するブロック図を示す。[Means to solve the problem] FIG. 1 shows a block diagram illustrating the invention in detail.

第1図に示す本発明の原理ブロック図中の10は、電気
入力信号を光出力信号に変換して送出する電光変換装置
であり、 20は、入力した光信号を電気出力信号に変換して出力
する光電変換装置であり、 30は、光ファイバであり、 40は、光電変換装W20に設ける、入力光信号が断に
なったことを検出し、光入力断信号を送出する光信号検
出手段であり、 50は、電光変換装置10に設ける、光信号検出手段4
0から送出される光入力断信号により、出力を低光出力
のパイロット光とする制御手段であり、 60は、光信号検出手段40と制御手段50とを接続す
る線路であり、 かかる手段を具備することにより本課題を解決するため
の手段とする。
In the block diagram of the principle of the present invention shown in FIG. 1, 10 is an electro-optical conversion device that converts an electrical input signal into an optical output signal and sends it out, and 20 is an electrical-optical converter that converts the input optical signal into an electrical output signal. 30 is an optical fiber; 40 is an optical signal detection means provided in the photoelectric conversion device W20 for detecting that the input optical signal is disconnected and transmitting an optical input disconnection signal; 50 is an optical signal detection means 4 provided in the electro-optical conversion device 10
60 is a line connecting the optical signal detection means 40 and the control means 50, and is equipped with such a means. This is a means to solve this problem.

〔作 用〕[For production]

制御手段50は線路60を介して、光信号検出手段40
からの入力光断信号を受信したときには、電光変換装置
10の出力を低光出力のパイロット光として出力する。
The control means 50 connects the optical signal detection means 40 via a line 60.
When receiving an input optical disconnection signal from the electro-optical converter 10, the output of the electro-optical converter 10 is output as pilot light with low optical output.

障害が復旧し、光信号検出手段40が低光出力のパイロ
ット光を検出したときには、光入力断信号の送出を停止
し、制御手段50は、電光変換装置10の出力を正常出
力に復旧させる。
When the fault is restored and the optical signal detection means 40 detects the pilot light with low optical output, the transmission of the optical input cutoff signal is stopped, and the control means 50 restores the output of the electro-optic converter 10 to normal output.

〔実施例〕〔Example〕

以下本発明の要旨を第2図に示す実施例により具体的に
説明する。
The gist of the present invention will be specifically explained below with reference to an embodiment shown in FIG.

第2図は本発明の詳細な説明するブロック図を示す。FIG. 2 shows a block diagram illustrating the invention in detail.

第2図に示す本発明の実施例の、電光変換装置10、光
電変換装置20、光ファイバ30、リレー41、接点4
2、介在対61は第4図で説明した従来例と同じである
In the embodiment of the present invention shown in FIG.
2. The intervening pair 61 is the same as the conventional example explained in FIG.

51は制御回路であり、リレー41の接点42が「閉」
になると、光入力信号断と判断して、電光変換装置10
の出力を低出力のパイロット光とし、リレー41の接点
42が「開」になると、光入力信号が正常と判断して、
電光変換装置10の出力を正常状態の高出力に戻す動作
を行う。
51 is a control circuit, and the contact 42 of the relay 41 is "closed"
When this happens, it is determined that the optical input signal is disconnected, and the electro-optical converter 10
output as a low-output pilot light, and when the contact 42 of the relay 41 becomes "open", it is determined that the optical input signal is normal,
An operation is performed to return the output of the electro-optical conversion device 10 to the normal high output.

第1図の線路60としては特別に布設するものではなく
、光フアイバケーブルの中の介在対61を使用している
The line 60 in FIG. 1 is not specially laid, but an intervening pair 61 in an optical fiber cable is used.

第2図により、動作を説明する。The operation will be explained with reference to FIG.

(1)正常状態で通信を行っており、リレー41は「オ
フ」の状態を継続している。
(1) Communication is performed in a normal state, and the relay 41 continues to be in the "off" state.

(2)例えば、光ファイバ30が断となったときには、
光電変換装置20の光入力信号断を検出し、リレー41
が「オン」となり、その接点42が「閉」となる。
(2) For example, when the optical fiber 30 is disconnected,
Detects a disconnection of the optical input signal of the photoelectric conversion device 20 and activates the relay 41.
becomes "on" and its contact 42 becomes "closed".

(3)制御回路51は介在対61を経由して、接点42
が「閉」となったことを検出すると、電光変換装置10
の出力を低出力のパイロット光とする。
(3) The control circuit 51 connects the contact 42 via the intervening pair 61.
When it is detected that the is “closed”, the electro-optical conversion device 10
The output of is used as a low-power pilot light.

(4)光ファイバ30が正常に復旧したときには、光電
変換装置20は低出力のパイロット光を検出するので、
リレー41が「オフ」なり、その接点42が「開」とな
る。
(4) When the optical fiber 30 is restored to normal, the photoelectric conversion device 20 detects low-power pilot light, so
Relay 41 becomes "off" and its contact 42 becomes "open".

ファイバ30が復旧したものとし、電光変換装置10の
出力を高出力の正常状態に戻し通信を再開する。
It is assumed that the fiber 30 has been restored, and the output of the electro-optic converter 10 is returned to a high output normal state to restart communication.

以上のように構成することにより、網膜に損傷を与える
ことがなく、自動的に通信を再開することができる。
By configuring as described above, communication can be automatically restarted without damaging the retina.

〔発明の効果〕〔Effect of the invention〕

以上のような本発明によれば、光ファイバ断、光コネク
タの取り外したときには、電光変換装置の出力を低出力
のパイロット光とするので、誤って光ファイバを覗き込
んでも網膜に損傷を与えることはなく、光ファイバ断の
復旧、光コネクタの再締結時には、自動的に通信を再開
することのできる光出力制御方式を提供することができ
る。
According to the present invention as described above, when the optical fiber is broken or the optical connector is removed, the output of the electro-optic converter is a low-power pilot light, so even if the optical fiber is accidentally looked into, the retina will not be damaged. Instead, it is possible to provide an optical output control method that can automatically restart communication when the optical fiber is restored or the optical connector is reconnected.

10は電光変換装置、 20は光電変換装置、 30は光ファイバ、 40は光信号検出手段、 41はリレー   42は接点、 50は制御手段、 51は制御回路、  5 60は線路、 61は介在対、 をそれぞれ示す。10 is an electro-optical conversion device; 20 is a photoelectric conversion device; 30 is an optical fiber, 40 is an optical signal detection means; 41 is a relay, 42 is a contact, 50 is a control means; 51 is a control circuit, 5 60 is a railway line, 61 is an intervening pair, are shown respectively.

1Aは停止回路、1A is a stop circuit,

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の詳細な説明するブロック図、第4図は
従来例を説明する図、 をそれぞれ示す。 図において、 ”−41 ’41 (41 本発明の詳細な説明するブロック図 第1図 (41 第2図 光フアイバケーブルの構成の例を説明する間第3図 ″−41
FIG. 1 is a block diagram explaining the present invention in detail, and FIG. 4 is a diagram explaining a conventional example. In the figures, ``-41'' 41 (41) A detailed block diagram of the present invention is shown in Figure 1 (41).

Claims (1)

【特許請求の範囲】 電気入力信号を光出力信号に変換して送出する電光変換
装置(10)と、入力した光信号を電気出力信号に変換
して出力する光電変換装置(20)と、光ファイバ(3
0)よりなる光通信システムにおいて、 前記光電変換装置(20)に、入力光信号が断になった
ことを検出し、光入力断信号を送出する光信号検出手段
(40)と、 前記電光変換装置(10)に、前記光信号検出手段(4
0)から送出される光入力断信号により、出力を低光出
力のパイロット光とする制御手段(50)と、 前記光信号検出手段(40)と前記制御手段(50)と
を接続する線路(60)を設け、前記制御手段(50)
は前記線路(60)を介して、前記光信号検出手段(4
0)から入力光断信号を受信したときは、前記電光変換
装置(10)の出力を低光出力のパイロット光とし、前
記光信号検出手段(40)が該低光出力のパイロット光
を検出したときには、光入力断信号の送出を停止し、前
記制御手段(50)は、前記電光変換装置(10)の出
力を正常出力に復旧させることを特徴とする光出力制御
方式。
[Claims] An electro-optical conversion device (10) that converts an electrical input signal into an optical output signal and sends it out; a photoelectric conversion device (20) that converts an input optical signal into an electrical output signal and outputs it; Fiber (3
0), an optical signal detection means (40) that detects that the input optical signal is disconnected to the photoelectric conversion device (20) and sends an optical input disconnection signal; The device (10) includes the optical signal detection means (4).
control means (50) for outputting low optical output pilot light in response to an optical input disconnection signal sent from 0); and a line (50) connecting the optical signal detection means (40) and the control means (50). 60), the control means (50)
is connected to the optical signal detection means (4) via the line (60).
0), the output of the electro-optical converter (10) is made into a low optical output pilot light, and the optical signal detection means (40) detects the low optical output pilot light. An optical output control system characterized in that, at times, transmission of the optical input cutoff signal is stopped, and the control means (50) restores the output of the electro-optic converter (10) to normal output.
JP2031808A 1990-02-13 1990-02-13 Optical output control system Pending JPH03235536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2031808A JPH03235536A (en) 1990-02-13 1990-02-13 Optical output control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2031808A JPH03235536A (en) 1990-02-13 1990-02-13 Optical output control system

Publications (1)

Publication Number Publication Date
JPH03235536A true JPH03235536A (en) 1991-10-21

Family

ID=12341395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2031808A Pending JPH03235536A (en) 1990-02-13 1990-02-13 Optical output control system

Country Status (1)

Country Link
JP (1) JPH03235536A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005244305A (en) * 2004-02-24 2005-09-08 Fujitsu Ltd Optical output control method and controller at optical transmission node
JP2009194508A (en) * 2008-02-13 2009-08-27 Fuji Xerox Co Ltd Signal transmission device, signal transmitter, and image display system
WO2021157068A1 (en) * 2020-02-07 2021-08-12 株式会社Fuji Optical communication equipment and component mounting machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005244305A (en) * 2004-02-24 2005-09-08 Fujitsu Ltd Optical output control method and controller at optical transmission node
US7519300B2 (en) 2004-02-24 2009-04-14 Fujitsu Limited Optical output control method for use in optical transmission node and optical output control apparatus for use in the same
JP4636806B2 (en) * 2004-02-24 2011-02-23 富士通株式会社 Optical output control method and optical output control apparatus in optical transmission node
JP2009194508A (en) * 2008-02-13 2009-08-27 Fuji Xerox Co Ltd Signal transmission device, signal transmitter, and image display system
WO2021157068A1 (en) * 2020-02-07 2021-08-12 株式会社Fuji Optical communication equipment and component mounting machine
JPWO2021157068A1 (en) * 2020-02-07 2021-08-12
US12009856B2 (en) 2020-02-07 2024-06-11 Fuji Corporation Optical communication equipment and component mounting machine

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