JPH01119232U - - Google Patents
Info
- Publication number
- JPH01119232U JPH01119232U JP1453088U JP1453088U JPH01119232U JP H01119232 U JPH01119232 U JP H01119232U JP 1453088 U JP1453088 U JP 1453088U JP 1453088 U JP1453088 U JP 1453088U JP H01119232 U JPH01119232 U JP H01119232U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- outputs
- laser diode
- electrical signal
- optical transmission
- 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 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Description
第１図は本考案による光送信器を用いた光フア
イバ通信装置の一例を示すブロツク図、第２図は
従来の光フアイバ通信装置を示すブロツク図であ
る。
１００……レーザダイオード、１０１……光方
向性結合器、１０２……反射信号出力端子、１０
３……光検出器、１０４……増幅器、１０５……
比較器、１０７……スイツチ回路、１０９……直
流バイアス電源回路、１１０……レーザダイオー
ド駆動回路、１１１……光送信回路、１１３……
光フアイバ伝送路。
FIG. 1 is a block diagram showing an example of an optical fiber communication device using an optical transmitter according to the present invention, and FIG. 2 is a block diagram showing a conventional optical fiber communication device. 100... Laser diode, 101... Optical directional coupler, 102... Reflected signal output terminal, 10
3...Photodetector, 104...Amplifier, 105...
Comparator, 107... Switch circuit, 109... DC bias power supply circuit, 110... Laser diode drive circuit, 111... Optical transmission circuit, 113...
Fiber optic transmission line.
Claims (1)
伝送路を通じて光受信回路に送信する光送信回路
において、 前記レーザダイオードが発生させた光信号を前
記光伝送路に出力し、前記光伝送路からの光を反
射光出力端子から出力する光方向性結合器と、 この光方向性結合器の反射光出力端子から出力
される光を電気信号に変換して出力する光検出器
と、 この光検出器が出力する電気信号を増幅して出
力する増幅器と、 この増幅器が出力する電気信号が所定のレベル
を超えたとき、所定の制御信号を出力する比較器
と、 この比較器が制御信号を出力したとき、前記レ
ーザダイオードの直流バイアス電流を遮断するス
イツチ回路とを備えたことを特徴とする光送信回
路。[Claims for Utility Model Registration] In an optical transmission circuit that transmits an optical signal generated by a laser diode to an optical reception circuit through an optical transmission line, the optical signal generated by the laser diode is output to the optical transmission line, an optical directional coupler that outputs light from the optical transmission line from a reflected light output terminal; and a photodetector that converts the light output from the reflected light output terminal of the optical directional coupler into an electrical signal and outputs the electrical signal. an amplifier that amplifies and outputs the electrical signal output from this photodetector; a comparator that outputs a predetermined control signal when the electrical signal output from this amplifier exceeds a predetermined level; and this comparator. and a switch circuit that cuts off the DC bias current of the laser diode when the laser diode outputs a control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1453088U JPH01119232U (en) | 1988-02-08 | 1988-02-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1453088U JPH01119232U (en) | 1988-02-08 | 1988-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01119232U true JPH01119232U (en) | 1989-08-11 |
Family
ID=31225806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1453088U Pending JPH01119232U (en) | 1988-02-08 | 1988-02-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01119232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010146659A1 (en) * | 2009-06-16 | 2010-12-23 | 富士通オプティカルコンポーネンツ株式会社 | Optical transmission apparatus |
-
1988
- 1988-02-08 JP JP1453088U patent/JPH01119232U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010146659A1 (en) * | 2009-06-16 | 2010-12-23 | 富士通オプティカルコンポーネンツ株式会社 | Optical transmission apparatus |
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