JPS57187985A - Gain stabilizing optical amplifier - Google Patents

Gain stabilizing optical amplifier

Info

Publication number
JPS57187985A
JPS57187985A JP56072291A JP7229181A JPS57187985A JP S57187985 A JPS57187985 A JP S57187985A JP 56072291 A JP56072291 A JP 56072291A JP 7229181 A JP7229181 A JP 7229181A JP S57187985 A JPS57187985 A JP S57187985A
Authority
JP
Japan
Prior art keywords
optical amplifier
input signal
semiconductor laser
laser optical
low 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.)
Pending
Application number
JP56072291A
Other languages
Japanese (ja)
Inventor
Soichi Kobayashi
Tatsuya Kimura
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56072291A priority Critical patent/JPS57187985A/en
Publication of JPS57187985A publication Critical patent/JPS57187985A/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
    • H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
    • 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
    • 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
    • H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
    • H01S5/5045—Amplifier structures not provided for in groups H01S5/02 - H01S5/30 the arrangement having a frequency filtering function

Landscapes

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

Abstract

PURPOSE:To compose all circuits by electric system by a method wherein the peak frequency of the gain distribution of an optical amplifier is controlled by the induced electric signal generated by an interacrion between input signal and carrier in the potical amplifier. CONSTITUTION:DC bias current from a DC source 3 and low frequency sine- wave signal omegam from an oscillator 5 are superposed and supplied to a semiconductor laser optical amplifier 2. Then inducted electric signal generated in the semiconductor laser optical amplifier 2 by an interaction between FM input signal light 1 and the low frequency sine-wave signal omegam is applied to a band- pass filter 11 and a 2omegam component is taken out. Then a processing circuit 12 judges wether the input signal carrier frequency is on the low frequency side or the high frequency side of the gain distribution taking the signal of the oscillator 5 as a standard. A DC source is controlled by this judgement and the maximum value of the gain of the semiconductor laser optical amplifier 2 is tuned to the carrier frequency of the FM input signal light 1.
JP56072291A 1981-05-15 1981-05-15 Gain stabilizing optical amplifier Pending JPS57187985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072291A JPS57187985A (en) 1981-05-15 1981-05-15 Gain stabilizing optical amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072291A JPS57187985A (en) 1981-05-15 1981-05-15 Gain stabilizing optical amplifier

Publications (1)

Publication Number Publication Date
JPS57187985A true JPS57187985A (en) 1982-11-18

Family

ID=13485015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072291A Pending JPS57187985A (en) 1981-05-15 1981-05-15 Gain stabilizing optical amplifier

Country Status (1)

Country Link
JP (1) JPS57187985A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417526A (en) * 1987-07-13 1989-01-20 Nec Corp Optical communication equipment
JP2008157466A (en) * 2006-09-28 2008-07-10 Daikin Ind Ltd Pipe joint, refrigeration device and heat pump-type hot water device
US20120008656A1 (en) * 2010-07-07 2012-01-12 Fujitsu Limited Device for judging state of semiconductor laser and method for judging state of semiconductor laser
US10047887B2 (en) 2010-01-21 2018-08-14 Swagelok Company Conduit gripping device having retaining structure for conduit fitting
US10619770B2 (en) 2008-12-10 2020-04-14 Swagelok Company Ferrule assembly for conduit fitting
US11703165B2 (en) 2018-04-27 2023-07-18 Swagelok Company Ferrule assembly for conduit fitting

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6417526A (en) * 1987-07-13 1989-01-20 Nec Corp Optical communication equipment
JP2008157466A (en) * 2006-09-28 2008-07-10 Daikin Ind Ltd Pipe joint, refrigeration device and heat pump-type hot water device
US10619770B2 (en) 2008-12-10 2020-04-14 Swagelok Company Ferrule assembly for conduit fitting
US11473703B2 (en) 2008-12-10 2022-10-18 Swagelok Company Ferrule assembly for conduit fitting
US10047887B2 (en) 2010-01-21 2018-08-14 Swagelok Company Conduit gripping device having retaining structure for conduit fitting
US10247336B2 (en) 2010-01-21 2019-04-02 Swagelok Company Conduit gripping device having retaining structure for conduit fitting
US10415730B2 (en) 2010-01-21 2019-09-17 Swagelok Company Conduit gripping device having retaining structure for conduit fitting
US10760722B2 (en) 2010-01-21 2020-09-01 Swagelok Company Fitting subassembly with retained ferrule
US20120008656A1 (en) * 2010-07-07 2012-01-12 Fujitsu Limited Device for judging state of semiconductor laser and method for judging state of semiconductor laser
US8503496B2 (en) * 2010-07-07 2013-08-06 Fujitsu Limited Device for judging state of semiconductor laser and method for judging state of semiconductor laser
US11703165B2 (en) 2018-04-27 2023-07-18 Swagelok Company Ferrule assembly for conduit fitting

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