JPS6459880A - Semiconductor laser driving system - Google Patents

Semiconductor laser driving system

Info

Publication number
JPS6459880A
JPS6459880A JP62215322A JP21532287A JPS6459880A JP S6459880 A JPS6459880 A JP S6459880A JP 62215322 A JP62215322 A JP 62215322A JP 21532287 A JP21532287 A JP 21532287A JP S6459880 A JPS6459880 A JP S6459880A
Authority
JP
Japan
Prior art keywords
semiconductor laser
signal
low speed
electric signal
driving 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
Application number
JP62215322A
Other languages
Japanese (ja)
Inventor
Kazuhiko Ide
Hideaki Yamakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62215322A priority Critical patent/JPS6459880A/en
Publication of JPS6459880A publication Critical patent/JPS6459880A/en
Pending legal-status Critical Current

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
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • 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
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar

Abstract

PURPOSE:To stabilize light output easily and accurately by controlling the bias current and modulation current of a semiconductor laser which converts electric signal to optical signal for transmission in a signal processing circuit made of low speed circuit. CONSTITUTION:Electric signal from a signal generator 11 is input to a semiconductor laser driving circuit 12 which contains a control circuit for light output stabilization. The signal output from the driving circuit 12 is applied to a first semiconductor laser 16 to generate optical signal. A second semiconductor laser 17 is mounted on the same heat sink 15 as the semiconductor 16 and modulated by a signal from a low speed signal generator 13. The light emitted from the second semiconductor laser 17 is converted to electric signal by a photodetector 14 and input to the driving circuit 12. The peak value is detected by this low speed electric signal and the bias current of the first semiconductor laser 16 is feedback-controlled to keep the peak value constant.
JP62215322A 1987-08-31 1987-08-31 Semiconductor laser driving system Pending JPS6459880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62215322A JPS6459880A (en) 1987-08-31 1987-08-31 Semiconductor laser driving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215322A JPS6459880A (en) 1987-08-31 1987-08-31 Semiconductor laser driving system

Publications (1)

Publication Number Publication Date
JPS6459880A true JPS6459880A (en) 1989-03-07

Family

ID=16670386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215322A Pending JPS6459880A (en) 1987-08-31 1987-08-31 Semiconductor laser driving system

Country Status (1)

Country Link
JP (1) JPS6459880A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011115A1 (en) * 2000-07-28 2002-02-07 Nichia Corporation Drive circuit of display and display
JP2009258482A (en) * 2008-04-18 2009-11-05 Mitsubishi Electric Corp Optical microwave conversion device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011115A1 (en) * 2000-07-28 2002-02-07 Nichia Corporation Drive circuit of display and display
US6839056B2 (en) 2000-07-28 2005-01-04 Nichia Corporation Drive circuit of display and display
JP4561033B2 (en) * 2000-07-28 2010-10-13 日亜化学工業株式会社 Display device drive circuit and display device
JP2009258482A (en) * 2008-04-18 2009-11-05 Mitsubishi Electric Corp Optical microwave conversion device

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