JPS56148878A - Strain compensating circuit for laser diode - Google Patents

Strain compensating circuit for laser diode

Info

Publication number
JPS56148878A
JPS56148878A JP5252180A JP5252180A JPS56148878A JP S56148878 A JPS56148878 A JP S56148878A JP 5252180 A JP5252180 A JP 5252180A JP 5252180 A JP5252180 A JP 5252180A JP S56148878 A JPS56148878 A JP S56148878A
Authority
JP
Japan
Prior art keywords
signal
laser diode
photodiode
transistor
base
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
JP5252180A
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 JP5252180A priority Critical patent/JPS56148878A/en
Publication of JPS56148878A publication Critical patent/JPS56148878A/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
    • H01S5/06832—Stabilising during amplitude modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)

Abstract

PURPOSE:To sufficiently compensate a strain of a laser diode by increasing the feedback rate of the feedback current to the base of a transistor due to the current flowing through a photodiode. CONSTITUTION:A signal from a signal input terminal 8 is amplified by a Darlington-connection amplifying circuit having transistors 1, 2, and a laser diode 6 allows to emit a light in response to the input signal. The emitted light signal of the laser diode 6 is partly detected by the photodiode 11. Signal components corresponding to the DC signal and the AC signal contained in the emitted light signal are extracted from the output signal of the photodiode 11, and the base bias of the transistor 1 is controlled by the DC component. After the AC component is amplified by an amplifier 16, it is fed back to the base of the transistor 1 negatively.
JP5252180A 1980-04-18 1980-04-18 Strain compensating circuit for laser diode Pending JPS56148878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5252180A JPS56148878A (en) 1980-04-18 1980-04-18 Strain compensating circuit for laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5252180A JPS56148878A (en) 1980-04-18 1980-04-18 Strain compensating circuit for laser diode

Publications (1)

Publication Number Publication Date
JPS56148878A true JPS56148878A (en) 1981-11-18

Family

ID=12917039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5252180A Pending JPS56148878A (en) 1980-04-18 1980-04-18 Strain compensating circuit for laser diode

Country Status (1)

Country Link
JP (1) JPS56148878A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333882A (en) * 1986-07-28 1988-02-13 Sony Tektronix Corp Drive circuit for laser diode
JP2008098090A (en) * 2006-10-16 2008-04-24 Nidec-Read Corp Connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333882A (en) * 1986-07-28 1988-02-13 Sony Tektronix Corp Drive circuit for laser diode
JP2008098090A (en) * 2006-10-16 2008-04-24 Nidec-Read Corp Connector

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