JPS6123750U - optical transmitter circuit - Google Patents
optical transmitter circuitInfo
- Publication number
- JPS6123750U JPS6123750U JP1984106517U JP10651784U JPS6123750U JP S6123750 U JPS6123750 U JP S6123750U JP 1984106517 U JP1984106517 U JP 1984106517U JP 10651784 U JP10651784 U JP 10651784U JP S6123750 U JPS6123750 U JP S6123750U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- differential amplifier
- amplifier circuit
- high frequency
- frequency pulse
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【図面の簡単な説明】
第１図は従来の光送信回路の電気回路図、第２図Ａ，
Ｂは同回路の動作説明図、第３図は本考案の一実施例に
おける光送信回路の電気回路図である。
ＬＤ・・・・・・レーザダイオード、Ｅ・・・・・・バ
イアス電圧、Ｒ・・・・・・抵抗、−Ｖ・・・・・・負
の直流電圧、Ｔｒ１，Ｔｒ２，Ｔｒ３・・・・・・トラ
ンジスタ、１・・・・・・入力端子、，２・・・・・・
入力端子、３・・・・・・パルス検出回路、４・・・・
・・バイアス切り換え回路。[Brief explanation of the drawings] Figure 1 is an electric circuit diagram of a conventional optical transmitter circuit, Figure 2 A,
B is an explanatory diagram of the operation of the circuit, and FIG. 3 is an electrical circuit diagram of the optical transmission circuit in one embodiment of the present invention. LD... Laser diode, E... Bias voltage, R... Resistance, -V... Negative DC voltage, Tr1, Tr2, Tr3... ...Transistor, 1...Input terminal, 2...
Input terminal, 3...Pulse detection circuit, 4...
...Bias switching circuit.
Claims (1)
電流回路と、上記定電流回路に入力される伝送信号を上
記差動増幅回路に入力される高周波パルス信号で振幅変
調した光信号を出力するレーザダイオードと、上記差動
増幅回路に入力される高周波パルスの有無を検出するパ
ルス検出回路、と、高周波パルス信号の有無に応じて上
記差動増幅回路のバイアスを切り換えるバイアス切り換
え回路とを具備してなる光送信回路。A differential amplifier circuit, a constant current circuit connected in series to the differential amplifier circuit, and a light beam whose amplitude is modulated by a transmission signal input to the constant current circuit with a high frequency pulse signal input to the differential amplifier circuit. A laser diode that outputs a signal, a pulse detection circuit that detects the presence or absence of a high frequency pulse input to the differential amplifier circuit, and a bias switching circuit that switches the bias of the differential amplifier circuit depending on the presence or absence of the high frequency pulse signal. An optical transmission circuit comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984106517U JPS6123750U (en) | 1984-07-13 | 1984-07-13 | optical transmitter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984106517U JPS6123750U (en) | 1984-07-13 | 1984-07-13 | optical transmitter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6123750U true JPS6123750U (en) | 1986-02-12 |
Family
ID=30665797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984106517U Pending JPS6123750U (en) | 1984-07-13 | 1984-07-13 | optical transmitter circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123750U (en) |
-
1984
- 1984-07-13 JP JP1984106517U patent/JPS6123750U/en active Pending
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