WO2008126275A1 - Driving method of variable wavelength laser and optical transmitter - Google Patents

Driving method of variable wavelength laser and optical transmitter Download PDF

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Publication number
WO2008126275A1
WO2008126275A1 PCT/JP2007/057173 JP2007057173W WO2008126275A1 WO 2008126275 A1 WO2008126275 A1 WO 2008126275A1 JP 2007057173 W JP2007057173 W JP 2007057173W WO 2008126275 A1 WO2008126275 A1 WO 2008126275A1
Authority
WO
WIPO (PCT)
Prior art keywords
wavelength laser
variable wavelength
drive current
gain
optical
Prior art date
Application number
PCT/JP2007/057173
Other languages
French (fr)
Japanese (ja)
Inventor
Hiromasa Tanaka
Original Assignee
Fujitsu Limited
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 Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/057173 priority Critical patent/WO2008126275A1/en
Publication of WO2008126275A1 publication Critical patent/WO2008126275A1/en

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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
    • H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
    • H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
    • H01S5/06255—Controlling the frequency of the radiation
    • 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

Landscapes

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

Abstract

In an optical module mounting a variable wavelength laser (TDA-DFB-LD) comprising an optical waveguide having wavelength control waveguide portions capable of controlling the oscillation wavelength and gain waveguide portions generating a gain alternately in the direction of optical axis, and a drive section capable of controlling a first drive current being fed to the wavelength control waveguide portion side and a second drive current being fed to the gain waveguide portion side independently, line width of light exiting the variable wavelength laser is widened by superimposing a dither signal oscillating at a preset frequency with a preset amplitude on the second drive current out of the first and second drive currents, and generation of backscattering light due to SBS is suppressed by increasing the SBS threshold of an optical fiber into which the light enters.
PCT/JP2007/057173 2007-03-30 2007-03-30 Driving method of variable wavelength laser and optical transmitter WO2008126275A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/057173 WO2008126275A1 (en) 2007-03-30 2007-03-30 Driving method of variable wavelength laser and optical transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/057173 WO2008126275A1 (en) 2007-03-30 2007-03-30 Driving method of variable wavelength laser and optical transmitter

Publications (1)

Publication Number Publication Date
WO2008126275A1 true WO2008126275A1 (en) 2008-10-23

Family

ID=39863455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/057173 WO2008126275A1 (en) 2007-03-30 2007-03-30 Driving method of variable wavelength laser and optical transmitter

Country Status (1)

Country Link
WO (1) WO2008126275A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014154835A (en) * 2013-02-13 2014-08-25 Nippon Telegr & Teleph Corp <Ntt> Optical transmitter
JP2017531326A (en) * 2014-09-15 2017-10-19 エムコア コーポレイション Manufacturing and operating method of optical modulator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07193537A (en) * 1993-11-12 1995-07-28 At & T Corp Noise level reduction system
JPH08111567A (en) * 1994-09-26 1996-04-30 At & T Corp Apparatus for surpressing stimulated brillouin scattering
JPH09214038A (en) * 1996-01-29 1997-08-15 Fujitsu Ltd Optical transmitter, optical communication system, and optical communication method
JPH11195843A (en) * 1997-10-20 1999-07-21 Lucent Technol Inc Laser transmitter for reduced sbs
JP2006054272A (en) * 2004-08-11 2006-02-23 Opnext Japan Inc Semiconductor optical element, laser module and optical transmitter/receiver
JP2006295102A (en) * 2005-03-17 2006-10-26 Fujitsu Ltd Tunable laser

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07193537A (en) * 1993-11-12 1995-07-28 At & T Corp Noise level reduction system
JPH08111567A (en) * 1994-09-26 1996-04-30 At & T Corp Apparatus for surpressing stimulated brillouin scattering
JPH09214038A (en) * 1996-01-29 1997-08-15 Fujitsu Ltd Optical transmitter, optical communication system, and optical communication method
JPH11195843A (en) * 1997-10-20 1999-07-21 Lucent Technol Inc Laser transmitter for reduced sbs
JP2006054272A (en) * 2004-08-11 2006-02-23 Opnext Japan Inc Semiconductor optical element, laser module and optical transmitter/receiver
JP2006295102A (en) * 2005-03-17 2006-10-26 Fujitsu Ltd Tunable laser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MORI H. ET AL.: "DBR Laser no Spectrum Sen Haba Kakudai to SBS Yokuatsu (Spectral Linewidth Broadening of DBR Laser and its SBS Reduction)", 1996 NEN IEICE ELECTRONICS SOCIETY TAIKAI KOEN RONBUNSHU I, 1996, XP003023903 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014154835A (en) * 2013-02-13 2014-08-25 Nippon Telegr & Teleph Corp <Ntt> Optical transmitter
JP2017531326A (en) * 2014-09-15 2017-10-19 エムコア コーポレイション Manufacturing and operating method of optical modulator

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