JPS551147A - Stabilized luminous source - Google Patents

Stabilized luminous source

Info

Publication number
JPS551147A
JPS551147A JP7441278A JP7441278A JPS551147A JP S551147 A JPS551147 A JP S551147A JP 7441278 A JP7441278 A JP 7441278A JP 7441278 A JP7441278 A JP 7441278A JP S551147 A JPS551147 A JP S551147A
Authority
JP
Japan
Prior art keywords
constant
diode
led element
photo
luminous source
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
JP7441278A
Other languages
Japanese (ja)
Other versions
JPS6125231B2 (en
Inventor
Yoshihiro Uda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7441278A priority Critical patent/JPS551147A/en
Publication of JPS551147A publication Critical patent/JPS551147A/en
Publication of JPS6125231B2 publication Critical patent/JPS6125231B2/ja
Granted 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
    • H01S5/06808—Stabilisation of laser output parameters by monitoring the electrical laser parameters, e.g. voltage or current

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 provide a luminous diode a constant-voltage circuit for supplying a driving current thereto, and temperature compensating signal generating means in a luminous source thereby to stabilize a luminous source for the photo-fiber communication. CONSTITUTION:A constant-voltage circuit consisting of an operational amplifier 22, a transistor 23 and a resistor 24 is connected between a Si diode 21 and an LED element 25. If the circuit is constituted in this manner, when the temperature is constant, the terminal voltage of the diode 21 becomes constant, and a constant current flowing through the LED element 25, and the output photo-power does not vary even after the lapse of time. However, when the temperature has varied, the terminal voltage of the diode 21 varies, and the current flowing through the LED element 25 tends to vary. However, since the amplifier 22, transistor 23 and resistor 24 are added, the output power of the LED element 25 becomes constant, complicate and precious parts such as a photo branch path and the like become unnecessary.
JP7441278A 1978-06-19 1978-06-19 Stabilized luminous source Granted JPS551147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7441278A JPS551147A (en) 1978-06-19 1978-06-19 Stabilized luminous source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7441278A JPS551147A (en) 1978-06-19 1978-06-19 Stabilized luminous source

Publications (2)

Publication Number Publication Date
JPS551147A true JPS551147A (en) 1980-01-07
JPS6125231B2 JPS6125231B2 (en) 1986-06-14

Family

ID=13546445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7441278A Granted JPS551147A (en) 1978-06-19 1978-06-19 Stabilized luminous source

Country Status (1)

Country Link
JP (1) JPS551147A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133685A (en) * 1981-02-10 1982-08-18 Hitachi Cable Ltd Excitation circuit for light emitting element
JPS60198872A (en) * 1984-03-23 1985-10-08 Seiko Instr & Electronics Ltd Mos integrated circuit for led driving
JPH03244174A (en) * 1990-02-22 1991-10-30 Kokusai Electric Co Ltd Temperature compensating circuit of semiconductor laser
EP1039597A2 (en) * 1999-03-19 2000-09-27 Sensor Line Gesellschaft für optoelektronische Sensoren mbH Method for stabilising the optical output of light emitting diodes and laserdiodes
JP2008294462A (en) * 2000-11-28 2008-12-04 Harris Corp Low-power laser driver
KR20180049097A (en) 2015-10-23 2018-05-10 닛본 세이고 가부시끼가이샤 Electric power steering device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133685A (en) * 1981-02-10 1982-08-18 Hitachi Cable Ltd Excitation circuit for light emitting element
JPS60198872A (en) * 1984-03-23 1985-10-08 Seiko Instr & Electronics Ltd Mos integrated circuit for led driving
JPH0576792B2 (en) * 1984-03-23 1993-10-25 Seiko Instr & Electronics
JPH03244174A (en) * 1990-02-22 1991-10-30 Kokusai Electric Co Ltd Temperature compensating circuit of semiconductor laser
EP1039597A2 (en) * 1999-03-19 2000-09-27 Sensor Line Gesellschaft für optoelektronische Sensoren mbH Method for stabilising the optical output of light emitting diodes and laserdiodes
EP1039597A3 (en) * 1999-03-19 2004-01-02 Sensor Line Gesellschaft für optoelektronische Sensoren mbH Method for stabilising the optical output of light emitting diodes and laserdiodes
JP2008294462A (en) * 2000-11-28 2008-12-04 Harris Corp Low-power laser driver
KR20180049097A (en) 2015-10-23 2018-05-10 닛본 세이고 가부시끼가이샤 Electric power steering device

Also Published As

Publication number Publication date
JPS6125231B2 (en) 1986-06-14

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