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JPS5343487A - Semiconductor laser output control circuit - Google Patents

Semiconductor laser output control circuit

Info

Publication number
JPS5343487A
JPS5343487A JP11710776A JP11710776A JPS5343487A JP S5343487 A JPS5343487 A JP S5343487A JP 11710776 A JP11710776 A JP 11710776A JP 11710776 A JP11710776 A JP 11710776A JP S5343487 A JPS5343487 A JP S5343487A
Authority
JP
Japan
Prior art keywords
output control
control circuit
laser output
semiconductor laser
peak value
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.)
Granted
Application number
JP11710776A
Other languages
Japanese (ja)
Other versions
JPS5939914B2 (en
Inventor
Yukihiro Mochida
Tadao Ogawa
Kazuo Yamaguchi
Hideki Ishio
Seiji Nakagawa
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
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP51117107A priority Critical patent/JPS5939914B2/en
Publication of JPS5343487A publication Critical patent/JPS5343487A/en
Publication of JPS5939914B2 publication Critical patent/JPS5939914B2/en
Expired 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)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To positively prevent the reckless flow of bias current at the time of continuous absence of signals and signal interruption by holding the peak value level at a specified constant level through provision of a laser output control circuit and adding a peak value detecting circuit to said circuit.
JP51117107A 1976-10-01 1976-10-01 Semiconductor laser output control circuit Expired JPS5939914B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51117107A JPS5939914B2 (en) 1976-10-01 1976-10-01 Semiconductor laser output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51117107A JPS5939914B2 (en) 1976-10-01 1976-10-01 Semiconductor laser output control circuit

Publications (2)

Publication Number Publication Date
JPS5343487A true JPS5343487A (en) 1978-04-19
JPS5939914B2 JPS5939914B2 (en) 1984-09-27

Family

ID=14703567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51117107A Expired JPS5939914B2 (en) 1976-10-01 1976-10-01 Semiconductor laser output control circuit

Country Status (1)

Country Link
JP (1) JPS5939914B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142987A (en) * 1978-04-28 1979-11-07 Hitachi Ltd Protecting method from overdrive of semiconductor laser
JPS56100487A (en) * 1979-12-27 1981-08-12 Western Electric Co Output stabilizing circuit for injection laser
JPS592173U (en) * 1983-05-06 1984-01-09 株式会社日立製作所 Protection device from overdrive of semiconductor laser
JPS5994483A (en) * 1982-11-19 1984-05-31 Fujitsu Ltd Semiconductor laser drive circuit
JPH0320459U (en) * 1990-07-12 1991-02-28

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134705A (en) * 1974-04-15 1975-10-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134705A (en) * 1974-04-15 1975-10-25

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54142987A (en) * 1978-04-28 1979-11-07 Hitachi Ltd Protecting method from overdrive of semiconductor laser
JPS56100487A (en) * 1979-12-27 1981-08-12 Western Electric Co Output stabilizing circuit for injection laser
JPS6433766U (en) * 1979-12-27 1989-03-02
JPS5994483A (en) * 1982-11-19 1984-05-31 Fujitsu Ltd Semiconductor laser drive circuit
JPS592173U (en) * 1983-05-06 1984-01-09 株式会社日立製作所 Protection device from overdrive of semiconductor laser
JPH0320459U (en) * 1990-07-12 1991-02-28

Also Published As

Publication number Publication date
JPS5939914B2 (en) 1984-09-27

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