JPS6439787A - Oscillation frequency stabilizing device for laser unit - Google Patents

Oscillation frequency stabilizing device for laser unit

Info

Publication number
JPS6439787A
JPS6439787A JP19537887A JP19537887A JPS6439787A JP S6439787 A JPS6439787 A JP S6439787A JP 19537887 A JP19537887 A JP 19537887A JP 19537887 A JP19537887 A JP 19537887A JP S6439787 A JPS6439787 A JP S6439787A
Authority
JP
Japan
Prior art keywords
laser
oscillation frequency
stabilizing device
unit
frequency
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
JP19537887A
Other languages
Japanese (ja)
Other versions
JPH06103772B2 (en
Inventor
Naoki Shimozaka
Hiroshi Honmo
Haruhito Shimizu
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
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 filed Critical NEC Corp
Priority to JP62195378A priority Critical patent/JPH06103772B2/en
Publication of JPS6439787A publication Critical patent/JPS6439787A/en
Publication of JPH06103772B2 publication Critical patent/JPH06103772B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01S5/0687—Stabilising the frequency of the laser

Abstract

PURPOSE:To offer an oscillation frequency stabilizing device, for a laser unit which can be easily handled, has a superior impact resistance and moreover, can be contrived a reduction in the size of the device as well, by a method wherein an optical fiber is used as a frequency reference to perform the stabilization of the oscillation frequency of a laser. CONSTITUTION:An oscillation frequency stabilizing device for laser unit is provided with an optical fiber 3, in which an emitting light from a 1.5mum band DFB laser 1 is incided, a laser driving circuit 7 and a laser driving circuit control unit 8. This fiber 3 is used as a frequency reference and has a characteristic to absorb the light to change monotonously to the optical frequency in the vicinity of the oscillation frequency of the laser 1. The unit 8 can be constituted of a photodetector 4, a differential amplifier 5, to which the output of this photodetector 4 is supplied as an output on one side and at the same time, to which a reference voltage is applied as an input on the other side, and a control circuit 6, to which the output of this amplifier 5 is given.
JP62195378A 1987-08-06 1987-08-06 Laser device Oscillation frequency stabilization device Expired - Lifetime JPH06103772B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62195378A JPH06103772B2 (en) 1987-08-06 1987-08-06 Laser device Oscillation frequency stabilization device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62195378A JPH06103772B2 (en) 1987-08-06 1987-08-06 Laser device Oscillation frequency stabilization device

Publications (2)

Publication Number Publication Date
JPS6439787A true JPS6439787A (en) 1989-02-10
JPH06103772B2 JPH06103772B2 (en) 1994-12-14

Family

ID=16340172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62195378A Expired - Lifetime JPH06103772B2 (en) 1987-08-06 1987-08-06 Laser device Oscillation frequency stabilization device

Country Status (1)

Country Link
JP (1) JPH06103772B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02282205A (en) * 1989-04-24 1990-11-19 Nippon Telegr & Teleph Corp <Ntt> Light absorptive fiber
US5333089A (en) * 1992-03-19 1994-07-26 Alcatel N.V. Optical communications system employing fiber-optic amplifiers and control of the transmitter wavelength

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61102080A (en) * 1984-10-25 1986-05-20 Nec Corp Frequency-stabled semiconductor laser device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61102080A (en) * 1984-10-25 1986-05-20 Nec Corp Frequency-stabled semiconductor laser device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02282205A (en) * 1989-04-24 1990-11-19 Nippon Telegr & Teleph Corp <Ntt> Light absorptive fiber
US5333089A (en) * 1992-03-19 1994-07-26 Alcatel N.V. Optical communications system employing fiber-optic amplifiers and control of the transmitter wavelength

Also Published As

Publication number Publication date
JPH06103772B2 (en) 1994-12-14

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