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JPS5655087A - Wavelength control system for laser diode - Google Patents

Wavelength control system for laser diode

Info

Publication number
JPS5655087A
JPS5655087A JP13142279A JP13142279A JPS5655087A JP S5655087 A JPS5655087 A JP S5655087A JP 13142279 A JP13142279 A JP 13142279A JP 13142279 A JP13142279 A JP 13142279A JP S5655087 A JPS5655087 A JP S5655087A
Authority
JP
Japan
Prior art keywords
wavelength
light
laser diode
incident
output
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
JP13142279A
Other languages
Japanese (ja)
Inventor
Masayuki Goto
Takashi Kihara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13142279A priority Critical patent/JPS5655087A/en
Publication of JPS5655087A publication Critical patent/JPS5655087A/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
    • 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
    • H01S5/06837—Stabilising otherwise than by an applied electric field or current, e.g. by controlling the temperature

Landscapes

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

Abstract

PURPOSE:To emit a light having predetermined wavelength from a laser diode by detecting the output light wavelength of the laser diode and controlling the operating temperature of the diode when the wavelength is displaced from a reference value. CONSTITUTION:The output light from a laser diode 1 is inputted into a light branching filter 9, and is partly inputted to a prism 5. The light incident to the prism 5 has different rays of rafractive angles in accordance with the wavelengths of the light rays in such a manner that as the wavelength is shortened, it is incident into a photoreceptor 6a while as the wavelength is increased, it is incident to a photoreceptor 6b. The deviation of the electric outputs from the photoreceptors 6a and 6b are amplified by a differential amplifier 7. The output from the amplifier 7 serves to operate a temperature controller 8, thereby controlling the operating temperature of the laser diode 1 so that the amounts of light rays incident to the photoreceptors 6a, 6b may become equal to each other. The wavelength detecting means may include an interference film filter which increases or decreases the loss with respect to the variation in the light wavelength.
JP13142279A 1979-10-12 1979-10-12 Wavelength control system for laser diode Pending JPS5655087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13142279A JPS5655087A (en) 1979-10-12 1979-10-12 Wavelength control system for laser diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13142279A JPS5655087A (en) 1979-10-12 1979-10-12 Wavelength control system for laser diode

Publications (1)

Publication Number Publication Date
JPS5655087A true JPS5655087A (en) 1981-05-15

Family

ID=15057585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13142279A Pending JPS5655087A (en) 1979-10-12 1979-10-12 Wavelength control system for laser diode

Country Status (1)

Country Link
JP (1) JPS5655087A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864083A (en) * 1981-10-14 1983-04-16 Nippon Telegr & Teleph Corp <Ntt> Frequency stabilized semiconductor laser
JPS59501432A (en) * 1982-08-23 1984-08-09 ウエスタ−ン　エレクトリツク　カムパニ−，インコ−ポレ−テツド stable spectrum laser
EP0516318A2 (en) * 1991-05-27 1992-12-02 Pioneer Electronic Corporation Apparatus for controlling semiconductor laser operating temperature
JPH077212A (en) * 1993-06-15 1995-01-10 Nec Corp Apparatus for controlling wavelength of light emitted from laser diode
JPH0774423A (en) * 1993-09-03 1995-03-17 Nec Corp Semiconductor laser device
US6038242A (en) * 1998-02-12 2000-03-14 Fujitsu Limited Multiwavelength light source
US6144025A (en) * 1999-01-13 2000-11-07 Santec Corporation Laser light source apparatus
US6788717B2 (en) 2000-03-10 2004-09-07 Nec Corporation Wavelength stabilized laser module
EP1239560A3 (en) * 2001-03-09 2006-02-22 The Furukawa Electric Co., Ltd. Optical module and method of making the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864083A (en) * 1981-10-14 1983-04-16 Nippon Telegr & Teleph Corp <Ntt> Frequency stabilized semiconductor laser
JPS59501432A (en) * 1982-08-23 1984-08-09 ウエスタ−ン　エレクトリツク　カムパニ−，インコ−ポレ−テツド stable spectrum laser
EP0516318A2 (en) * 1991-05-27 1992-12-02 Pioneer Electronic Corporation Apparatus for controlling semiconductor laser operating temperature
JPH077212A (en) * 1993-06-15 1995-01-10 Nec Corp Apparatus for controlling wavelength of light emitted from laser diode
JPH0774423A (en) * 1993-09-03 1995-03-17 Nec Corp Semiconductor laser device
US6038242A (en) * 1998-02-12 2000-03-14 Fujitsu Limited Multiwavelength light source
US6144025A (en) * 1999-01-13 2000-11-07 Santec Corporation Laser light source apparatus
US6788717B2 (en) 2000-03-10 2004-09-07 Nec Corporation Wavelength stabilized laser module
EP1239560A3 (en) * 2001-03-09 2006-02-22 The Furukawa Electric Co., Ltd. Optical module and method of making the same

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