JPS6418284A - Method and equipment for stabilizing oscillation frequency intervals of plural laser devices - Google Patents

Method and equipment for stabilizing oscillation frequency intervals of plural laser devices

Info

Publication number
JPS6418284A
JPS6418284A JP62175102A JP17510287A JPS6418284A JP S6418284 A JPS6418284 A JP S6418284A JP 62175102 A JP62175102 A JP 62175102A JP 17510287 A JP17510287 A JP 17510287A JP S6418284 A JPS6418284 A JP S6418284A
Authority
JP
Japan
Prior art keywords
frequency intervals
frequency
laser devices
equipment
series
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
JP62175102A
Other languages
Japanese (ja)
Other versions
JPH0716070B2 (en
Inventor
Naoki Shimozaka
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 JP62175102A priority Critical patent/JPH0716070B2/en
Priority to CA000568019A priority patent/CA1307559C/en
Priority to EP88108539A priority patent/EP0293008B1/en
Priority to DE3889251T priority patent/DE3889251T2/en
Priority to AU16776/88A priority patent/AU592743B2/en
Priority to US07/200,098 priority patent/US4835782A/en
Publication of JPS6418284A publication Critical patent/JPS6418284A/en
Publication of JPH0716070B2 publication Critical patent/JPH0716070B2/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
    • 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
    • H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
    • H01S5/042—Electrical excitation ; Circuits therefor
    • 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
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar

Landscapes

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

Abstract

PURPOSE:To facilitate setting frequency intervals stably without increasing the size of an equipment by a method wherein the frequency of a reference laser device is scanned and a simple ethalon board is employed as a Fabry-Perot resonator and the Fabry-Perot resonator is employed as the reference of frequency intervals. CONSTITUTION:A series of reference pulses with time differences corresponding to frequency interval references determined by the free spectrum range of an optical resonator by coupling a reference laser device 1 whose frequency is scanned with the optical resonator. After the emitted light of the reference laser device 1 and the beat light of the emitted lights of a plurality of laser devices 8-10 which are objects to be controlled are detected by photodetectors 6 and 16, those light are let through low-pass filters to generate a series of pulses with time differences corresponding to the frequency intervals of a plurality of the laser devices 8-10 and the differences between the timings of generating the respective pulses constituting the pulse series and the timings of generating the corresponding pulses constituting the reference pulse series are used as error signals for control. With this constitution, the frequency intervals of any number of laser devices can be stabilized simultaneously and, more over, the size of the equipment can be reduced.
JP62175102A 1987-05-29 1987-07-13 Method and apparatus for stabilizing oscillation frequency intervals of a plurality of laser devices Expired - Lifetime JPH0716070B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP62175102A JPH0716070B2 (en) 1987-07-13 1987-07-13 Method and apparatus for stabilizing oscillation frequency intervals of a plurality of laser devices
CA000568019A CA1307559C (en) 1987-05-29 1988-05-27 Method and apparatus for an oscillation frequency separation among a plurality of laser devices
EP88108539A EP0293008B1 (en) 1987-05-29 1988-05-27 A method and apparatus for an oscillation frequency separation among a plurality of laser devices
DE3889251T DE3889251T2 (en) 1987-05-29 1988-05-27 Method and device for separating vibrations between a number of laser devices.
AU16776/88A AU592743B2 (en) 1987-05-29 1988-05-30 Method and apparatus for an oscillation frequency separation among a plurality of laser devices
US07/200,098 US4835782A (en) 1987-05-29 1988-05-31 Method and apparatus for an oscillation frequency separation among a plurality of laser devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62175102A JPH0716070B2 (en) 1987-07-13 1987-07-13 Method and apparatus for stabilizing oscillation frequency intervals of a plurality of laser devices

Publications (2)

Publication Number Publication Date
JPS6418284A true JPS6418284A (en) 1989-01-23
JPH0716070B2 JPH0716070B2 (en) 1995-02-22

Family

ID=15990291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62175102A Expired - Lifetime JPH0716070B2 (en) 1987-05-29 1987-07-13 Method and apparatus for stabilizing oscillation frequency intervals of a plurality of laser devices

Country Status (1)

Country Link
JP (1) JPH0716070B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03225981A (en) * 1990-01-31 1991-10-04 Nec Corp Method for stabilization of frequency interval of laser apparatus
FR2763447A1 (en) * 1997-05-16 1998-11-20 Korea Electronics Telecomm Wavelength alignment device for optical source
WO2004068093A1 (en) * 2003-01-30 2004-08-12 Fujitsu Limited Method for detecting wavelength and circuit for detecting wavelength and apparatus employing them
JP2012119654A (en) * 2010-11-10 2012-06-21 Mitsubishi Electric Corp Optical frequency control device
JP2018022041A (en) * 2016-08-03 2018-02-08 日本電信電話株式会社 Wavelength swept light source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03225981A (en) * 1990-01-31 1991-10-04 Nec Corp Method for stabilization of frequency interval of laser apparatus
FR2763447A1 (en) * 1997-05-16 1998-11-20 Korea Electronics Telecomm Wavelength alignment device for optical source
WO2004068093A1 (en) * 2003-01-30 2004-08-12 Fujitsu Limited Method for detecting wavelength and circuit for detecting wavelength and apparatus employing them
JP2012119654A (en) * 2010-11-10 2012-06-21 Mitsubishi Electric Corp Optical frequency control device
JP2018022041A (en) * 2016-08-03 2018-02-08 日本電信電話株式会社 Wavelength swept light source

Also Published As

Publication number Publication date
JPH0716070B2 (en) 1995-02-22

Similar Documents

Publication Publication Date Title
EP0279603A3 (en) Apparatus and method for optical signal source stabilization
JP2864591B2 (en) Oscillation frequency interval stabilization method for multiple laser devices
AU3007689A (en) Frequency conversion of optical radiation
DE68908884D1 (en) CONTROL OF OPTICAL FEEDBACK FOR FREQUENCY CONVERSION OF LASER DIODE RADIATION.
DE3853450D1 (en) Arrangement for synchronizing the output pulses of a circuit with an input clock.
JPS6418284A (en) Method and equipment for stabilizing oscillation frequency intervals of plural laser devices
EP0115445A3 (en) Optical heterodyne detection pulse receiving system and method
JPH0231475A (en) Stabilization of interval between laser oscillation frequencies
JPS53105992A (en) Stabilizing circuit for lumious element output
JPS6448481A (en) Semiconductor laser modulation control system
WO1996009699A3 (en) Optical unit for restoring a pulse pattern, and receiver suitable for use in a transmission system comprising such a unit
JPS5595384A (en) Semiconductor laser device
JPS57190387A (en) Wavelength sweeping laser device
JPS6489230A (en) Photoelectric switch of multiple beam type
JPS5257790A (en) Semiconductor scanner
JPS6431487A (en) Method and device for stabilizing oscillation frequency interval of plural lasers
JPS6463811A (en) Synchronizing pulse generating circuit
JPS53123056A (en) Light modulation system for frequency
SU924512A1 (en) Multi-channel device for recording electric signals
JPS5683089A (en) Light modulation system
JPS647679A (en) Laser device
DE3872405D1 (en) SYNCHRONIZATION DEVICE IN AN OPTOELECTRONIC DISTANCE MEASURING SYSTEM.
JPS5326527A (en) Index signal generating equi pment
JPS52123890A (en) Equipment for mode synchronizing laser
GOLDOBIN et al. The detection of the subpicosecond time structure of radiation pulses from heterolasers with a nonlinear absorber(Registratsiia subpikosekundnoi vremennoi struktury impul'sov izlucheniia geterolazerov s nelineinym poglotitelem)