JPS5593281A - Strain compensator - Google Patents

Strain compensator

Info

Publication number
JPS5593281A
JPS5593281A JP160579A JP160579A JPS5593281A JP S5593281 A JPS5593281 A JP S5593281A JP 160579 A JP160579 A JP 160579A JP 160579 A JP160579 A JP 160579A JP S5593281 A JPS5593281 A JP S5593281A
Authority
JP
Japan
Prior art keywords
base
luminous element
amplifying circuit
input
strain
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
JP160579A
Other languages
Japanese (ja)
Inventor
Shigeru Minagawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP160579A priority Critical patent/JPS5593281A/en
Publication of JPS5593281A publication Critical patent/JPS5593281A/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)
  • Led Devices (AREA)

Abstract

PURPOSE:To make it possible to perform strain compensation with stable compensating action by performing strain compensation based on the voltage difference obtained from voltage comparison between strain waveform caused by non-linearity of luminous element and non-strain waveform before input of luminous element. CONSTITUTION:The modulated wave signal from terminal 1 is given through transistor Tr2, 3, branching device 4, Tr5 and capacitor 12 to luminous element 13. A part of rays ejected from the element 13 is amplified by broad-band amplifying circuit 21 and input in the base of Tr30 of differentail amplifying circuit composed of Tr30 and 31. The signal phase in this base is made to be the same with the branched signal which has branched into branching terminal 38b. And the branched signal is input in the base of Tr31. In this case, DC bias of the base of Tr31 is set to be lower than the bias of the base of Tr30. By this, the output voltage from collector terminal 28 of differential amplifying circuit Tr30 is applied to the base of Tr9 and is employed for drive control of luminous element 13.
JP160579A 1979-01-10 1979-01-10 Strain compensator Pending JPS5593281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP160579A JPS5593281A (en) 1979-01-10 1979-01-10 Strain compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP160579A JPS5593281A (en) 1979-01-10 1979-01-10 Strain compensator

Publications (1)

Publication Number Publication Date
JPS5593281A true JPS5593281A (en) 1980-07-15

Family

ID=11506125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP160579A Pending JPS5593281A (en) 1979-01-10 1979-01-10 Strain compensator

Country Status (1)

Country Link
JP (1) JPS5593281A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020049331A1 (en) * 2018-09-05 2020-03-12 Olympus Corporation Led driver circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020049331A1 (en) * 2018-09-05 2020-03-12 Olympus Corporation Led driver circuit

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