JPS5559790A - Double laser device - Google Patents

Double laser device

Info

Publication number
JPS5559790A
JPS5559790A JP13345678A JP13345678A JPS5559790A JP S5559790 A JPS5559790 A JP S5559790A JP 13345678 A JP13345678 A JP 13345678A JP 13345678 A JP13345678 A JP 13345678A JP S5559790 A JPS5559790 A JP S5559790A
Authority
JP
Japan
Prior art keywords
laser
comparators
output
cmpii
outputs
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
JP13345678A
Other languages
Japanese (ja)
Inventor
Takashi Kihara
Satoshi Ikeuchi
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 JP13345678A priority Critical patent/JPS5559790A/en
Publication of JPS5559790A publication Critical patent/JPS5559790A/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

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 eliminate mutual adverse effect to each other between two sets of control loops even if operated simultaneously by providing two comparators and providing different reference standard voltages thereat. CONSTITUTION:A synthesizer LCM synthesizes the outputs from a present laser LDI and a preliminary laser LDII. A light branching unit LBR is for example, a half mirror, which branches the light into the output to an output terminal OT to a transmission line and to an output to a photodetector LDT. The reference standard voltages VS1, VS2 of comparators CMPI, CMPII are different. The outputs of the comparators CMPI, CMPII are applied to laser drive circuits DVI, DVII to thereby control laser driving current.
JP13345678A 1978-10-30 1978-10-30 Double laser device Pending JPS5559790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13345678A JPS5559790A (en) 1978-10-30 1978-10-30 Double laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13345678A JPS5559790A (en) 1978-10-30 1978-10-30 Double laser device

Publications (1)

Publication Number Publication Date
JPS5559790A true JPS5559790A (en) 1980-05-06

Family

ID=15105197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13345678A Pending JPS5559790A (en) 1978-10-30 1978-10-30 Double laser device

Country Status (1)

Country Link
JP (1) JPS5559790A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723289A (en) * 1980-07-17 1982-02-06 Canon Inc Light-quantity controller
JP2006258863A (en) * 2005-03-15 2006-09-28 Fuji Xerox Co Ltd Method for mounting optical module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723289A (en) * 1980-07-17 1982-02-06 Canon Inc Light-quantity controller
JP2006258863A (en) * 2005-03-15 2006-09-28 Fuji Xerox Co Ltd Method for mounting optical module

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