JPS649676A - Drive circuit of semiconductor laser - Google Patents
Drive circuit of semiconductor laserInfo
- Publication number
- JPS649676A JPS649676A JP62164673A JP16467387A JPS649676A JP S649676 A JPS649676 A JP S649676A JP 62164673 A JP62164673 A JP 62164673A JP 16467387 A JP16467387 A JP 16467387A JP S649676 A JPS649676 A JP S649676A
- Authority
- JP
- Japan
- Prior art keywords
- point
- rise
- driving current
- semiconductor laser
- current
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/06209—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in single-section lasers
- H01S5/06216—Pulse modulation or generation
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Optical Communication System (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
PURPOSE:To inhibit the effect due to the relaxation oscillation of a semiconductor laser and to contrive the improvement of the rise and fall characteristics of an optical output in the driving circuit of the semiconductor laser by a method wherein a transmission line, whose end is opened, is connected in parallel to the laser through a matching resistor. CONSTITUTION:If an input signal Sin rises to a high level from a low level at a point t1, part of a driving current of a semiconductor laser LD is caused to flow in an addition circuit 10. Therefore, the value of the driving current does never become a current value i0 at the rise point t1. As such a rise up to the current value i0 of the driving current appears abruptly at the point t1, the rise of an optical output does never delay. Then, the driving current again rises at a point t2 subsequent to an hour T0 from the the point t1. This is due to that the division of the current to the circuit 10 has been completed and here, if the second rise point t2 of the driving current is made to coincide with the point of drop of the optical output due to the relaxation oscillation of the laser, the second rise of the driving current results in compensating the drop of the photo output. Thereby, the relaxation oscillation can be inhibited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164673A JPS649676A (en) | 1987-07-01 | 1987-07-01 | Drive circuit of semiconductor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164673A JPS649676A (en) | 1987-07-01 | 1987-07-01 | Drive circuit of semiconductor laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649676A true JPS649676A (en) | 1989-01-12 |
Family
ID=15797661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164673A Pending JPS649676A (en) | 1987-07-01 | 1987-07-01 | Drive circuit of semiconductor laser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649676A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6448481A (en) * | 1987-08-19 | 1989-02-22 | Fujitsu Ltd | Semiconductor laser modulation control system |
| JP2007521595A (en) * | 2003-06-27 | 2007-08-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Control method of diode device used in optical storage system |
| JP2010287264A (en) * | 2009-06-09 | 2010-12-24 | Sony Corp | Laser drive device and laser drive method |
-
1987
- 1987-07-01 JP JP62164673A patent/JPS649676A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6448481A (en) * | 1987-08-19 | 1989-02-22 | Fujitsu Ltd | Semiconductor laser modulation control system |
| JP2007521595A (en) * | 2003-06-27 | 2007-08-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Control method of diode device used in optical storage system |
| JP2010287264A (en) * | 2009-06-09 | 2010-12-24 | Sony Corp | Laser drive device and laser drive method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR840008229A (en) | Driving Method of Semiconductor Laser | |
| GB1100620A (en) | Electronic relay | |
| JPS55156420A (en) | Automatic reset circuit | |
| GB1296363A (en) | ||
| JPS5783930A (en) | Buffer circuit | |
| JPS649676A (en) | Drive circuit of semiconductor laser | |
| EP0157047A3 (en) | Method of and driver circuit for controlling a laser diode | |
| ATE60856T1 (en) | OPTICAL RECEIVER. | |
| JPS57188138A (en) | Logical gate circuit | |
| US4379240A (en) | Latching pulse width modulation comparator | |
| JPS6431258A (en) | Microprocessor | |
| JPS5580384A (en) | Oprical communication device | |
| SU427461A1 (en) | AMPLITUDE DISCRIMINATOR | |
| JPS6453611A (en) | Driver circuit | |
| JPS5570777A (en) | Test circuit for electronic watch | |
| JPS56119530A (en) | Semiconductor integrated circuit | |
| JPS5544238A (en) | Signal switching circuit | |
| GB1482798A (en) | Dc signal receiving circuits | |
| JPS5666906A (en) | Frequency multiplying circuit | |
| JPS55125460A (en) | Starting test method of crystal resonator | |
| GB979794A (en) | A resistance circuit element composed of a tunnel diode and a backward diode | |
| JPS52137246A (en) | Transistor transistor logic circuit | |
| JPS56129428A (en) | Logic circuit | |
| JPS55112587A (en) | Electronic watch | |
| JPS5479537A (en) | Operator |