JPS6448481A - Semiconductor laser modulation control system - Google Patents

Semiconductor laser modulation control system

Info

Publication number
JPS6448481A
JPS6448481A JP62204206A JP20420687A JPS6448481A JP S6448481 A JPS6448481 A JP S6448481A JP 62204206 A JP62204206 A JP 62204206A JP 20420687 A JP20420687 A JP 20420687A JP S6448481 A JPS6448481 A JP S6448481A
Authority
JP
Japan
Prior art keywords
drive
peak value
semiconductor laser
control system
waveform
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
JP62204206A
Other languages
Japanese (ja)
Inventor
Hiroshi Nishimoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62204206A priority Critical patent/JPS6448481A/en
Publication of JPS6448481A publication Critical patent/JPS6448481A/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
    • H01S5/062—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)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To reduce deterioration of waveform of received optical signal by performing control so that the amplitude of leading edge of drive signal may be lower for a certain amount of time as compared with the peak value. CONSTITUTION:The leading edge of drive current supplied from a drive circuit 2 to a semiconductor laser 1 is changed in steps or slantwise to allow it to be controlled low at least for a certain amount of time as compared with the peak value of drive current. Thus, the first peak value of relaxation drive is made to be low and relaxation oscillation is restricted. It allows the fluctuation of emission spectrum to be small and influence of wavelength dispersion of optical fiber to be small, thus resulting in less deterioration of waveform of received optical signal.
JP62204206A 1987-08-19 1987-08-19 Semiconductor laser modulation control system Pending JPS6448481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62204206A JPS6448481A (en) 1987-08-19 1987-08-19 Semiconductor laser modulation control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62204206A JPS6448481A (en) 1987-08-19 1987-08-19 Semiconductor laser modulation control system

Publications (1)

Publication Number Publication Date
JPS6448481A true JPS6448481A (en) 1989-02-22

Family

ID=16486590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62204206A Pending JPS6448481A (en) 1987-08-19 1987-08-19 Semiconductor laser modulation control system

Country Status (1)

Country Link
JP (1) JPS6448481A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001352118A (en) * 2000-06-08 2001-12-21 Cyber Laser Kk Light source device and laser device using the same
US7068691B2 (en) * 2003-03-06 2006-06-27 Opnext Japan, Inc. Directly modulated optical module and method for driving semiconductor laser included therein
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
EP1777787A3 (en) * 2005-10-18 2008-04-30 The Furukawa Electric Co., Ltd. Fiber laser modulation method and modulator
JP2010258405A (en) * 2009-04-03 2010-11-11 Sumitomo Electric Ind Ltd Laser diode drive circuit, and optical transmitter
WO2011000411A1 (en) * 2009-06-30 2011-01-06 Trimble Ab Optical pulse transmitter
JP2016096221A (en) * 2014-11-13 2016-05-26 住友電気工業株式会社 Drive circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649676A (en) * 1987-07-01 1989-01-12 Sumitomo Electric Industries Drive circuit of semiconductor laser

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS649676A (en) * 1987-07-01 1989-01-12 Sumitomo Electric Industries Drive circuit of semiconductor laser

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001352118A (en) * 2000-06-08 2001-12-21 Cyber Laser Kk Light source device and laser device using the same
US7068691B2 (en) * 2003-03-06 2006-06-27 Opnext Japan, Inc. Directly modulated optical module and method for driving semiconductor laser included therein
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
EP1777787A3 (en) * 2005-10-18 2008-04-30 The Furukawa Electric Co., Ltd. Fiber laser modulation method and modulator
US7742513B2 (en) 2005-10-18 2010-06-22 The Furukawa Electric Co., Ltd. Fiber laser modulation method and modulator
JP2010258405A (en) * 2009-04-03 2010-11-11 Sumitomo Electric Ind Ltd Laser diode drive circuit, and optical transmitter
WO2011000411A1 (en) * 2009-06-30 2011-01-06 Trimble Ab Optical pulse transmitter
US8743455B2 (en) 2009-06-30 2014-06-03 Trimble Ab Optical pulse transmitter
JP2016096221A (en) * 2014-11-13 2016-05-26 住友電気工業株式会社 Drive circuit

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