JPS5972054U - Signal disconnection detection circuit - Google Patents
Signal disconnection detection circuitInfo
- Publication number
- JPS5972054U JPS5972054U JP1982167168U JP16716882U JPS5972054U JP S5972054 U JPS5972054 U JP S5972054U JP 1982167168 U JP1982167168 U JP 1982167168U JP 16716882 U JP16716882 U JP 16716882U JP S5972054 U JPS5972054 U JP S5972054U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical
- detection circuit
- disconnection detection
- signal disconnection
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は先に提案された光中継器を示す図、第２図は本
考案の実施例を示す図である。
図中、１はレーザ媒質、２はＹ分岐回路、３はピンホト
ダイオード、４は利得制御回路、５は演算増幅器を示す
。FIG. 1 is a diagram showing a previously proposed optical repeater, and FIG. 2 is a diagram showing an embodiment of the present invention. In the figure, 1 is a laser medium, 2 is a Y branch circuit, 3 is a pin photodiode, 4 is a gain control circuit, and 5 is an operational amplifier.
Claims (1)
路にて分岐し、該分岐された光信号を光受光素子で受光
し電気信号に変換し、該電気信号にてレーザ媒質から出
力する光信号の強さを一定になるよう制御する光中継器
において、該電気信号と基準電圧の差を検出し、この差
が一定値以上になった時信号断検出信号を出力する検出
回路を！／ ｌ 配 設けたことを特徴とする信号断検出回路。[Claims for Utility Model Registration] Part of the optical signal output from the semiconductor laser optical amplifier is branched by an optical branching circuit, and the branched optical signal is received by a light receiving element and converted into an electrical signal. In an optical repeater that uses a signal to control the intensity of the optical signal output from the laser medium to be constant, the difference between the electrical signal and the reference voltage is detected, and when this difference exceeds a certain value, signal loss is detected. A detection circuit that outputs a signal! / l A signal disconnection detection circuit characterized in that it is provided with:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982167168U JPS5972054U (en) | 1982-11-04 | 1982-11-04 | Signal disconnection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982167168U JPS5972054U (en) | 1982-11-04 | 1982-11-04 | Signal disconnection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5972054U true JPS5972054U (en) | 1984-05-16 |
Family
ID=30365792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982167168U Pending JPS5972054U (en) | 1982-11-04 | 1982-11-04 | Signal disconnection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6462038A (en) * | 1987-09-01 | 1989-03-08 | Nec Corp | Optical amplifying repeater |
-
1982
- 1982-11-04 JP JP1982167168U patent/JPS5972054U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6462038A (en) * | 1987-09-01 | 1989-03-08 | Nec Corp | Optical amplifying repeater |
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