JPS572587A - Bias circuit for laser diode - Google Patents

Bias circuit for laser diode

Info

Publication number
JPS572587A
JPS572587A JP7687480A JP7687480A JPS572587A JP S572587 A JPS572587 A JP S572587A JP 7687480 A JP7687480 A JP 7687480A JP 7687480 A JP7687480 A JP 7687480A JP S572587 A JPS572587 A JP S572587A
Authority
JP
Japan
Prior art keywords
laser diode
bias
bias circuit
bias current
photodiode
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
JP7687480A
Other languages
Japanese (ja)
Inventor
Akira Fujita
Katsuyoshi Ito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7687480A priority Critical patent/JPS572587A/en
Publication of JPS572587A publication Critical patent/JPS572587A/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)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To accurately stabilize the light output of a laser diode by so connecting a photodiode to the initial stage of transistors connected in a Darlington connection as to be reversely bias, connecting a laser diode to the final stage, and connecting resistor for supplying DC bias current in parallel. CONSTITUTION:A photodiode 6 is connected with reverse bias to the initial stage 1 of transistors connected in Darlington connection, a laser diode 5 is connected to the final stage 2, and a resistor 8 for supplying DC bias current is connected in parallel. Thus, a bias current is flowed through the laser diode in addition to the control current for controlling the automatic output, thereby accurately stabilizing the light output.
JP7687480A 1980-06-06 1980-06-06 Bias circuit for laser diode Pending JPS572587A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7687480A JPS572587A (en) 1980-06-06 1980-06-06 Bias circuit for laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7687480A JPS572587A (en) 1980-06-06 1980-06-06 Bias circuit for laser diode

Publications (1)

Publication Number Publication Date
JPS572587A true JPS572587A (en) 1982-01-07

Family

ID=13617776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7687480A Pending JPS572587A (en) 1980-06-06 1980-06-06 Bias circuit for laser diode

Country Status (1)

Country Link
JP (1) JPS572587A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61105674U (en) * 1984-12-18 1986-07-04
US5199039A (en) * 1989-09-22 1993-03-30 Imatronic Limited Laser diode supply circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61105674U (en) * 1984-12-18 1986-07-04
JPH021269Y2 (en) * 1984-12-18 1990-01-12
US5199039A (en) * 1989-09-22 1993-03-30 Imatronic Limited Laser diode supply circuit

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