JPS56147494A - Semiconductor laser driving circuit - Google Patents
Semiconductor laser driving circuitInfo
- Publication number
- JPS56147494A JPS56147494A JP5084880A JP5084880A JPS56147494A JP S56147494 A JPS56147494 A JP S56147494A JP 5084880 A JP5084880 A JP 5084880A JP 5084880 A JP5084880 A JP 5084880A JP S56147494 A JPS56147494 A JP S56147494A
- Authority
- JP
- Japan
- Prior art keywords
- fet
- laser
- circuit
- voltage
- gaas
- 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
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE:To obtain high speed in the circuit and to make the circuit suitable for optical communication, by connecting a GaAs-FET to a laser in series to obtain a driving element, and simultaneously applying a DC bias voltage and a signal output voltage to a FET gate. CONSTITUTION:A drain 47 of the GaAs-FET 40 and a cathode 26 of the laser 25 are connected. An anode of the laser 25 is grounded. A negative voltage -Vcc is applied to a source of the FET 40. A voltage -Vc(Vc<Vcc) of a power source terminal 42 is divided by resistors 43 and 44, and applied to a gate of the FET 40 as a DC bias voltage. Under this condition, a signal is inputted to a base 46 of a transistor 41, and its output signal is overlapped on the DC bias and applied to a gate 45. Thus, a current is flowed to the FET and the laser 25 is driven. By using the GaAs-FET which can be operated at a high speed, the speed of the driving circuit can be made high so that the circuit is suitable for optical communications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084880A JPS56147494A (en) | 1980-04-17 | 1980-04-17 | Semiconductor laser driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084880A JPS56147494A (en) | 1980-04-17 | 1980-04-17 | Semiconductor laser driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56147494A true JPS56147494A (en) | 1981-11-16 |
Family
ID=12870133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5084880A Pending JPS56147494A (en) | 1980-04-17 | 1980-04-17 | Semiconductor laser driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56147494A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107693A (en) * | 1981-12-21 | 1983-06-27 | Minolta Camera Co Ltd | Semiconductor laser driving device |
| JPS5928396A (en) * | 1982-08-10 | 1984-02-15 | Nec Corp | Semiconductor laser drive device |
| JPS5950457U (en) * | 1982-09-24 | 1984-04-03 | 日産自動車株式会社 | optical pulse generator |
| JPS62122189A (en) * | 1985-11-21 | 1987-06-03 | Sharp Corp | Driving circuit for semiconductor laser |
| US6664461B2 (en) | 2000-04-12 | 2003-12-16 | Yamaha Corp. | Electric stringed musical instrument having detachable frame |
-
1980
- 1980-04-17 JP JP5084880A patent/JPS56147494A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58107693A (en) * | 1981-12-21 | 1983-06-27 | Minolta Camera Co Ltd | Semiconductor laser driving device |
| JPH059950B2 (en) * | 1981-12-21 | 1993-02-08 | Minolta Camera Kk | |
| JPS5928396A (en) * | 1982-08-10 | 1984-02-15 | Nec Corp | Semiconductor laser drive device |
| JPS5950457U (en) * | 1982-09-24 | 1984-04-03 | 日産自動車株式会社 | optical pulse generator |
| JPS62122189A (en) * | 1985-11-21 | 1987-06-03 | Sharp Corp | Driving circuit for semiconductor laser |
| US6664461B2 (en) | 2000-04-12 | 2003-12-16 | Yamaha Corp. | Electric stringed musical instrument having detachable frame |
| US7112732B2 (en) | 2000-04-12 | 2006-09-26 | Yamaha Corporation | Electric stringed musical instrument having detachable frame |
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