JPS5987166U - Semiconductor laser pulse width modulation circuit - Google Patents
Semiconductor laser pulse width modulation circuitInfo
- Publication number
- JPS5987166U JPS5987166U JP18062482U JP18062482U JPS5987166U JP S5987166 U JPS5987166 U JP S5987166U JP 18062482 U JP18062482 U JP 18062482U JP 18062482 U JP18062482 U JP 18062482U JP S5987166 U JPS5987166 U JP S5987166U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- current
- pulse width
- width modulation
- modulation circuit
- 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
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
第１図は本考案の原理を示す特性図、第２図１は半導体
レーザの発振遅延時間特性図、第２図２は予歪回路の予
歪特性図、第３図は本考案の一実施例を示すブロック図
である。Fig. 1 is a characteristic diagram showing the principle of the present invention, Fig. 2 1 is an oscillation delay time characteristic diagram of a semiconductor laser, Fig. 2 is a predistortion characteristic diagram of a predistortion circuit, and Fig. 3 is an implementation of the present invention. FIG. 2 is a block diagram illustrating an example.
Claims (1)
非直線性を補正する予歪回路に変調電流を通し、この出
力電流を半導体レーザのしきい電流よりも小さくしてお
き、この出力電流とパルス発生器の出力パルス電流を加
算し、その加算した電流のパルスピーク値が一定となる
ようにスライサによりスライスした電流で半導体レーザ
を駆動することにより、パルス幅変調光信号を得るよう
にした半導体レーザのパルス幅変調回路。A modulation current is passed through a predistortion circuit that corrects the nonlinearity of the oscillation delay time characteristic with respect to the drive current value of the semiconductor laser, and this output current is made smaller than the threshold current of the semiconductor laser, and this output current and pulse generation are A semiconductor laser that obtains a pulse width modulated optical signal by adding the output pulse currents of the device and driving the semiconductor laser with the current sliced by a slicer so that the pulse peak value of the added current is constant. Pulse width modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18062482U JPS5987166U (en) | 1982-12-01 | 1982-12-01 | Semiconductor laser pulse width modulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18062482U JPS5987166U (en) | 1982-12-01 | 1982-12-01 | Semiconductor laser pulse width modulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5987166U true JPS5987166U (en) | 1984-06-13 |
Family
ID=30391595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18062482U Pending JPS5987166U (en) | 1982-12-01 | 1982-12-01 | Semiconductor laser pulse width modulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5987166U (en) |
-
1982
- 1982-12-01 JP JP18062482U patent/JPS5987166U/en active Pending
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