JPS55140283A - Pulse modulator circuit for laser diode - Google Patents

Pulse modulator circuit for laser diode

Info

Publication number
JPS55140283A
JPS55140283A JP4825979A JP4825979A JPS55140283A JP S55140283 A JPS55140283 A JP S55140283A JP 4825979 A JP4825979 A JP 4825979A JP 4825979 A JP4825979 A JP 4825979A JP S55140283 A JPS55140283 A JP S55140283A
Authority
JP
Japan
Prior art keywords
laser diode
pulse
pulse modulator
circuit
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
JP4825979A
Other languages
Japanese (ja)
Inventor
Tadayoshi Kitayama
Kazuyoshi Oshima
Munehiko Nagano
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 JP4825979A priority Critical patent/JPS55140283A/en
Publication of JPS55140283A publication Critical patent/JPS55140283A/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
    • H01S5/06835—Stabilising during pulse modulation or generation

Landscapes

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

Abstract

PURPOSE:To stabilize the light pulse peak value of a laser diode with respect to temperature change and also the operation of a bias current control circuit therefor by newly adding a pulse modulator circuit with a pulse modulator current source having predetermined temperature characteristics. CONSTITUTION:A laser diode 1 is connected to a bias current control circuit 3 having a photodiode 2, and connected optically to the photodiode 2 using an optical system. Thus, a pulse modulation current is applied to a supply terminal 5, supplied to the connecting point of the laser diode 1 and the circuit 3. At this time a pulse modulation current source 6 is interposed therebetween, at predetermined temperature characteristics. Thus, when the light emitting efficiency of the laser diode 1 is altered by the temperature change, the source 6 controls the value of the modulated current, thereby retaining always the light pulse peak value constant.
JP4825979A 1979-04-18 1979-04-18 Pulse modulator circuit for laser diode Pending JPS55140283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4825979A JPS55140283A (en) 1979-04-18 1979-04-18 Pulse modulator circuit for laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4825979A JPS55140283A (en) 1979-04-18 1979-04-18 Pulse modulator circuit for laser diode

Publications (1)

Publication Number Publication Date
JPS55140283A true JPS55140283A (en) 1980-11-01

Family

ID=12798437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4825979A Pending JPS55140283A (en) 1979-04-18 1979-04-18 Pulse modulator circuit for laser diode

Country Status (1)

Country Link
JP (1) JPS55140283A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158051A (en) * 1982-03-15 1983-09-20 Toshiba Corp Controller for stabilizing output of semiconductor laser oscillator
EP0421674A2 (en) * 1989-10-06 1991-04-10 AT&T Corp. Laser driver with temperature compensation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158051A (en) * 1982-03-15 1983-09-20 Toshiba Corp Controller for stabilizing output of semiconductor laser oscillator
JPS6343819B2 (en) * 1982-03-15 1988-09-01 Tokyo Shibaura Electric Co
EP0421674A2 (en) * 1989-10-06 1991-04-10 AT&T Corp. Laser driver with temperature compensation

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