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DE60138935D1 - Optischer Verstärker - Google Patents

Optischer Verstärker

Info

Publication number
DE60138935D1
DE60138935D1 DE60138935T DE60138935T DE60138935D1 DE 60138935 D1 DE60138935 D1 DE 60138935D1 DE 60138935 T DE60138935 T DE 60138935T DE 60138935 T DE60138935 T DE 60138935T DE 60138935 D1 DE60138935 D1 DE 60138935D1
Authority
DE
Germany
Prior art keywords
optical amplifier
amplifier
optical
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.)
Expired - Lifetime
Application number
DE60138935T
Other languages
English (en)
Inventor
Susumu Kinoshita
Shinya Inagaki
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
Application granted granted Critical
Publication of DE60138935D1 publication Critical patent/DE60138935D1/de
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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0078—Frequency filtering
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H01S3/06758—Tandem amplifiers
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • 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
    • H01S2301/00—Functional characteristics
    • H01S2301/04—Gain spectral shaping, flattening
    • 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)
DE60138935T 2000-02-23 2001-02-15 Optischer Verstärker Expired - Lifetime DE60138935D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000046467 2000-02-23

Publications (1)

Publication Number Publication Date
DE60138935D1 true DE60138935D1 (de) 2009-07-23

Family

ID=18568868

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60138935T Expired - Lifetime DE60138935D1 (de) 2000-02-23 2001-02-15 Optischer Verstärker

Country Status (4)

Country Link
US (2) US6633429B2 (de)
EP (1) EP1128504B8 (de)
JP (1) JP4900501B2 (de)
DE (1) DE60138935D1 (de)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2372638C (en) * 2001-02-21 2006-09-12 Nippon Telegraph And Telephone Corporation Thulium-doped fiber amplifier using pump light for improving conversion efficiency in s-band
US20020163685A1 (en) * 2001-05-01 2002-11-07 Swanson Eric Arthur System and method for routing working and protect paths
JP2003069116A (ja) * 2001-08-22 2003-03-07 Fujitsu Ltd 光増幅器及び利得偏差補償方法
US6954305B2 (en) * 2001-09-26 2005-10-11 Sumitomo Electric Industries, Ltd. Optical amplifier and optical transmission system using it
US7136585B2 (en) * 2001-12-14 2006-11-14 Kiribati Wireless Ventures, Llc Optical amplifiers in a free space laser communication system
JP2003188831A (ja) * 2001-12-20 2003-07-04 Fujitsu Ltd 光伝送システムおよび光中継器
US7525725B2 (en) * 2002-03-05 2009-04-28 Sumitomo Electric Industries, Ltd. Optical amplification module, optical amplifier, optical communication system, and white light source
US6909538B2 (en) * 2002-03-08 2005-06-21 Lightwave Electronics Fiber amplifiers with depressed cladding and their uses in Er-doped fiber amplifiers for the S-band
JP4094352B2 (ja) * 2002-06-24 2008-06-04 富士通株式会社 光増幅器
US7400443B1 (en) * 2002-11-20 2008-07-15 Ciena Corporation Method and apparatus for optical amplifying device gain control with gain threshold
KR100480259B1 (ko) * 2002-12-14 2005-04-07 삼성전자주식회사 툴륨 첨가 광섬유 증폭기
WO2004075364A1 (ja) * 2003-02-21 2004-09-02 Fujitsu Limited 遅延位相整合ファイバを用いた光増幅器
US20060209392A1 (en) * 2003-08-11 2006-09-21 Renato Caponi Multi-stage optical amplifier optimized with respect to noise, gain and bandwidth
US7181119B2 (en) * 2003-09-05 2007-02-20 Sumitomo Electric Industries, Ltd. Optically amplifying waveguide, optical amplifier module, and optical communication system
KR100582542B1 (ko) * 2003-11-11 2006-05-23 한국전자통신연구원 장파장 대역 이득제어 광증폭기
DE102004047745A1 (de) * 2004-09-30 2006-04-27 Siemens Ag Ermittlung der verstärkten spontanen Emission in einem optischen Faserverstärker
EP1858127B1 (de) * 2005-03-07 2017-04-26 Fujitsu Ltd. Optischer verstärker mit optischer spitzenunterdrückung
EP1788730B1 (de) * 2005-11-21 2009-07-01 Alcatel Lucent Optische Verstärkungseinrichtung mit Kompensation von Faserabschnittverlustanstiegen
US9867530B2 (en) 2006-08-14 2018-01-16 Volcano Corporation Telescopic side port catheter device with imaging system and method for accessing side branch occlusions
US10219780B2 (en) 2007-07-12 2019-03-05 Volcano Corporation OCT-IVUS catheter for concurrent luminal imaging
US9596993B2 (en) 2007-07-12 2017-03-21 Volcano Corporation Automatic calibration systems and methods of use
EP2178442B1 (de) 2007-07-12 2017-09-06 Volcano Corporation Katheter für in-vivo-bildgebung
US7961380B2 (en) * 2008-02-19 2011-06-14 Oclaro North America Fast power transient supression in constant power-mode controlled optical amplifiers
WO2010023841A1 (ja) * 2008-08-26 2010-03-04 株式会社ニコン レーザ装置、光治療装置、露光装置、デバイス製造方法、及び被検物検査装置
CN102136870B (zh) * 2010-01-22 2014-02-26 华为技术有限公司 一种突发光信号的放大方法、装置和系统
US8428463B2 (en) * 2010-05-10 2013-04-23 Infinera Corporation Apparatus and method for controlling a dynamic gain equalizer
US11141063B2 (en) 2010-12-23 2021-10-12 Philips Image Guided Therapy Corporation Integrated system architectures and methods of use
US11040140B2 (en) 2010-12-31 2021-06-22 Philips Image Guided Therapy Corporation Deep vein thrombosis therapeutic methods
WO2013033489A1 (en) 2011-08-31 2013-03-07 Volcano Corporation Optical rotary joint and methods of use
JP2013157572A (ja) * 2012-01-31 2013-08-15 Fujitsu Optical Components Ltd 光増幅器および光増幅器の製造方法
US20140100454A1 (en) 2012-10-05 2014-04-10 Volcano Corporation Methods and systems for establishing parameters for three-dimensional imaging
US9292918B2 (en) 2012-10-05 2016-03-22 Volcano Corporation Methods and systems for transforming luminal images
US11272845B2 (en) 2012-10-05 2022-03-15 Philips Image Guided Therapy Corporation System and method for instant and automatic border detection
EP2904671B1 (de) * 2012-10-05 2022-05-04 David Welford Systeme und verfahren zum verstärken von licht
US9367965B2 (en) 2012-10-05 2016-06-14 Volcano Corporation Systems and methods for generating images of tissue
US10568586B2 (en) 2012-10-05 2020-02-25 Volcano Corporation Systems for indicating parameters in an imaging data set and methods of use
US9858668B2 (en) 2012-10-05 2018-01-02 Volcano Corporation Guidewire artifact removal in images
US9324141B2 (en) 2012-10-05 2016-04-26 Volcano Corporation Removal of A-scan streaking artifact
US10070827B2 (en) 2012-10-05 2018-09-11 Volcano Corporation Automatic image playback
US9307926B2 (en) 2012-10-05 2016-04-12 Volcano Corporation Automatic stent detection
US9286673B2 (en) 2012-10-05 2016-03-15 Volcano Corporation Systems for correcting distortions in a medical image and methods of use thereof
US9840734B2 (en) 2012-10-22 2017-12-12 Raindance Technologies, Inc. Methods for analyzing DNA
JP6322210B2 (ja) 2012-12-13 2018-05-09 ボルケーノ コーポレイション 標的化された挿管のためのデバイス、システム、および方法
US11406498B2 (en) 2012-12-20 2022-08-09 Philips Image Guided Therapy Corporation Implant delivery system and implants
US9730613B2 (en) 2012-12-20 2017-08-15 Volcano Corporation Locating intravascular images
US10939826B2 (en) 2012-12-20 2021-03-09 Philips Image Guided Therapy Corporation Aspirating and removing biological material
CA2895502A1 (en) 2012-12-20 2014-06-26 Jeremy Stigall Smooth transition catheters
US10942022B2 (en) 2012-12-20 2021-03-09 Philips Image Guided Therapy Corporation Manual calibration of imaging system
WO2014107287A1 (en) 2012-12-20 2014-07-10 Kemp Nathaniel J Optical coherence tomography system that is reconfigurable between different imaging modes
US9612105B2 (en) 2012-12-21 2017-04-04 Volcano Corporation Polarization sensitive optical coherence tomography system
US10058284B2 (en) 2012-12-21 2018-08-28 Volcano Corporation Simultaneous imaging, monitoring, and therapy
US9486143B2 (en) 2012-12-21 2016-11-08 Volcano Corporation Intravascular forward imaging device
CA2895769A1 (en) 2012-12-21 2014-06-26 Douglas Meyer Rotational ultrasound imaging catheter with extended catheter body telescope
CA2895993A1 (en) 2012-12-21 2014-06-26 Jason Spencer System and method for graphical processing of medical data
US9383263B2 (en) 2012-12-21 2016-07-05 Volcano Corporation Systems and methods for narrowing a wavelength emission of light
WO2014099672A1 (en) 2012-12-21 2014-06-26 Andrew Hancock System and method for multipath processing of image signals
WO2014100162A1 (en) 2012-12-21 2014-06-26 Kemp Nathaniel J Power-efficient optical buffering using optical switch
EP2934280B1 (de) 2012-12-21 2022-10-19 Mai, Jerome Ultraschallbildgebung mit variabler liniendichte
US10413317B2 (en) 2012-12-21 2019-09-17 Volcano Corporation System and method for catheter steering and operation
US10226597B2 (en) 2013-03-07 2019-03-12 Volcano Corporation Guidewire with centering mechanism
CN113705586A (zh) 2013-03-07 2021-11-26 飞利浦影像引导治疗公司 血管内图像中的多模态分割
EP2967391A4 (de) 2013-03-12 2016-11-02 Donna Collins Systeme und verfahren zur diagnose koronarer mikrovaskulärer erkrankungen
US11154313B2 (en) 2013-03-12 2021-10-26 The Volcano Corporation Vibrating guidewire torquer and methods of use
CN105120759B (zh) 2013-03-13 2018-02-23 火山公司 用于从旋转血管内超声设备产生图像的系统和方法
US11026591B2 (en) 2013-03-13 2021-06-08 Philips Image Guided Therapy Corporation Intravascular pressure sensor calibration
US9301687B2 (en) 2013-03-13 2016-04-05 Volcano Corporation System and method for OCT depth calibration
US10219887B2 (en) 2013-03-14 2019-03-05 Volcano Corporation Filters with echogenic characteristics
US20160030151A1 (en) 2013-03-14 2016-02-04 Volcano Corporation Filters with echogenic characteristics
US12343198B2 (en) 2013-03-14 2025-07-01 Philips Image Guided Therapy Corporation Delivery catheter having imaging capabilities
US10292677B2 (en) 2013-03-14 2019-05-21 Volcano Corporation Endoluminal filter having enhanced echogenic properties
KR101489279B1 (ko) * 2013-06-27 2015-02-04 주식회사 라이콤 자기 자동이득제어 분산형 라만증폭기의 자동이득제어방법
US9680283B2 (en) * 2013-12-20 2017-06-13 Oplink Communications, Llc Switchable-gain optical amplifier
CN104466634B (zh) * 2014-11-25 2017-10-31 武汉光迅科技股份有限公司 一种线性腔掺杂光纤激光器
US11923651B2 (en) * 2020-05-29 2024-03-05 Subcom, Llc Gain equalization in C+L erbium-doped fiber amplifiers
CN117477356A (zh) * 2022-07-20 2024-01-30 华为技术有限公司 一种光学放大器、光学放大方法及光通信设备
CN116207594A (zh) * 2023-04-04 2023-06-02 中国船舶集团有限公司第七〇七研究所 一种基于光纤陀螺仪的光纤光源及其控制方法

Family Cites Families (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4952017A (en) * 1989-03-14 1990-08-28 At&T Bell Laboratories Polarization independent semiconductor optical amplifier
US5260823A (en) 1990-05-21 1993-11-09 University Of Southampton Erbium-doped fibre amplifier with shaped spectral gain
US5050949A (en) * 1990-06-22 1991-09-24 At&T Bell Laboratories Multi-stage optical fiber amplifier
US5117303A (en) * 1990-08-23 1992-05-26 At&T Bell Laboratories Method of operating concatenated optical amplifiers
EP0643878A1 (de) * 1992-06-01 1995-03-22 BRITISH TELECOMMUNICATIONS public limited company Filter mit vorgewählter dämpfungswellenlängen-charakteristik
US5271024A (en) * 1992-07-27 1993-12-14 General Instrument Corporation Optical fiber amplifier and laser with flattened gain slope
JPH0677571A (ja) * 1992-08-24 1994-03-18 Nippon Telegr & Teleph Corp <Ntt> 光導波路形フィルタ
US5430572A (en) * 1993-09-30 1995-07-04 At&T Corp. High power, high gain, low noise, two-stage optical amplifier
US5406411A (en) * 1993-10-14 1995-04-11 Corning Incorporated Fiber amplifier having efficient pump power utilization
US5530583A (en) * 1993-11-18 1996-06-25 Matsushita Electric Industrial Co., Ltd. Optical signal amplification apparatus and an optical fiber transmission system using the same
JP2778438B2 (ja) * 1993-12-27 1998-07-23 日本電気株式会社 光増幅装置と光増幅器設計方法と光中継伝送システム
JP4001621B2 (ja) * 1994-02-18 2007-10-31 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 利得制御光ファイバ増幅器
IT1270032B (it) * 1994-04-14 1997-04-28 Pirelli Cavi Spa Sistema di telecomunicazione amplificata a multiplazione a divisione di lunghezza d'onda
US5541766A (en) * 1994-11-30 1996-07-30 At&T Corp. Gain control for optically amplified systems
JPH0918416A (ja) * 1995-06-28 1997-01-17 Hitachi Ltd 光増幅器
JP3829345B2 (ja) * 1995-09-08 2006-10-04 住友電気工業株式会社 光ファイバ増幅器
JP3739453B2 (ja) * 1995-11-29 2006-01-25 富士通株式会社 光増幅器及び該光増幅器を備えた光通信システム
JP3422398B2 (ja) * 1995-12-07 2003-06-30 富士通株式会社 重心波長モニタ方法及び装置、光増幅器並びに光通信システム
JPH09191303A (ja) * 1996-01-09 1997-07-22 Kokusai Denshin Denwa Co Ltd <Kdd> 光伝送路
US5668821A (en) * 1996-01-16 1997-09-16 Lucent Technologies Inc. Optical systems and devices employing spectrally flattened amplified spontaneous emission
JP3730299B2 (ja) * 1996-02-07 2005-12-21 富士通株式会社 光等化増幅器および光等化増幅方法
KR970064034A (ko) * 1996-02-10 1997-09-12 김광호 다중파장 자동 파워 및 이득 조절용 광전송 시스템 및 레이저
CA2182830C (en) * 1996-02-22 2002-06-18 Katsuyuki Imoto Rare earth element-doped multiple-core optical fiber and optical systems using the same
US6025947A (en) * 1996-05-02 2000-02-15 Fujitsu Limited Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
JPH09321701A (ja) * 1996-05-31 1997-12-12 Fujitsu Ltd 光通信システム及び光増幅器
JPH10173597A (ja) * 1996-12-06 1998-06-26 Nec Corp 光イコライザ
JPH10173606A (ja) * 1996-12-10 1998-06-26 Kokusai Denshin Denwa Co Ltd <Kdd> 光増幅中継伝送システム及び光増幅器
US6172803B1 (en) * 1997-02-18 2001-01-09 Nippon Telegraph And Telephone Corporation Optical amplifier and transmission system using the same
US5864424A (en) * 1997-05-19 1999-01-26 Hitachi, Ltd. Optical signal amplifying circuit
US6049417A (en) 1997-06-02 2000-04-11 Lucent Technologies Inc. Wide band optical amplifier
JP3771010B2 (ja) * 1997-08-06 2006-04-26 富士通株式会社 光増幅のための方法及び該方法を実施するためのシステム
JP3452768B2 (ja) * 1997-08-11 2003-09-29 富士通株式会社 光増幅のための方法及び装置並びに該装置を有するシステム
JPH1187812A (ja) * 1997-09-12 1999-03-30 Fujitsu Ltd 利得等化器及び該利得等化器を備えた光伝送システム
US6081361A (en) * 1997-10-17 2000-06-27 Lucent Technologies Inc. Sub-carrier multiplexing in broadband optical networks
JP3969807B2 (ja) * 1997-10-20 2007-09-05 富士通株式会社 分散補償装置
KR100258970B1 (ko) * 1997-11-20 2000-06-15 윤종용 광섬유 증폭기
JP4137211B2 (ja) * 1998-02-23 2008-08-20 富士通株式会社 分散補償ファイバ及びそれを用いた光増幅装置
US6603596B2 (en) * 1998-03-19 2003-08-05 Fujitsu Limited Gain and signal level adjustments of cascaded optical amplifiers
JP3453301B2 (ja) * 1998-04-27 2003-10-06 富士通株式会社 能動型光ファイバ及び光ファイバ増幅器
US6057959A (en) * 1998-05-22 2000-05-02 Ciena Corporation Optical amplifier having substantially uniform spectral gain
US5963361A (en) * 1998-05-22 1999-10-05 Ciena Corporation Optical amplifier having a variable attenuator controlled based on detected ASE
US6049413A (en) * 1998-05-22 2000-04-11 Ciena Corporation Optical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stages
JP3134854B2 (ja) * 1998-09-07 2001-02-13 日本電気株式会社 光増幅器
JP3844902B2 (ja) * 1999-03-02 2006-11-15 富士通株式会社 波長多重用光増幅器及び光通信システム
JP2000341213A (ja) * 1999-05-26 2000-12-08 Fujitsu Ltd 温度補償機能を有する利得調整器および光増幅器
JP2000354005A (ja) * 1999-06-11 2000-12-19 Fujitsu Ltd 利得等化方法、光増幅装置および光伝送システム
KR100715642B1 (ko) * 1999-07-09 2007-05-08 스미토모덴키고교가부시키가이샤 광 증폭기 및 광 증폭 방법
US6307668B1 (en) * 1999-10-04 2001-10-23 Optigain, Inc. Ultra-wide bandwidth fiber based optical amplifier
US6407855B1 (en) * 1999-10-29 2002-06-18 Sdl, Inc. Multiple wavelength optical sources
US6292290B1 (en) * 1999-12-20 2001-09-18 Nortel Networks Limited Methods and apparatus for adjusting power in an optical signal, for providing a seamless optical ring and for providing a bidirectional equalized amplifier
JP2001203415A (ja) * 2000-01-20 2001-07-27 Kddi Corp 光増幅器
JP2001313433A (ja) * 2000-02-23 2001-11-09 Fujitsu Ltd 光増幅器及び光増幅方法
JP4281245B2 (ja) * 2000-12-15 2009-06-17 富士通株式会社 光増幅器
US6661570B2 (en) * 2000-12-26 2003-12-09 Sumitomo Electric Industries, Ltd. Optical amplifier, optical communication system including the same, and optical fiber module included in the same
US6532101B2 (en) * 2001-03-16 2003-03-11 Xtera Communications, Inc. System and method for wide band Raman amplification
US6535330B1 (en) * 2001-03-31 2003-03-18 Corning Incorporated Dynamic controller for a multi-channel optical amplifier
JP5226164B2 (ja) * 2001-06-14 2013-07-03 富士通株式会社 光増幅器
TW584742B (en) * 2002-01-25 2004-04-21 Alps Electric Co Ltd Multilayer film optical filter, method of producing the same, and optical component using the same

Also Published As

Publication number Publication date
EP1128504A2 (de) 2001-08-29
EP1128504A3 (de) 2004-06-16
US20040042066A1 (en) 2004-03-04
EP1128504B8 (de) 2009-08-12
US6633429B2 (en) 2003-10-14
US20020001124A1 (en) 2002-01-03
US7480092B2 (en) 2009-01-20
JP2010199627A (ja) 2010-09-09
JP4900501B2 (ja) 2012-03-21
EP1128504B1 (de) 2009-06-10

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