DE69700572T2 - Rauscharmer faseroptischer Ramanverstärker und faseroptisches Kommunikationssystem mit einem solchen Verstärker - Google Patents

Rauscharmer faseroptischer Ramanverstärker und faseroptisches Kommunikationssystem mit einem solchen Verstärker

Info

Publication number
DE69700572T2
DE69700572T2 DE69700572T DE69700572T DE69700572T2 DE 69700572 T2 DE69700572 T2 DE 69700572T2 DE 69700572 T DE69700572 T DE 69700572T DE 69700572 T DE69700572 T DE 69700572T DE 69700572 T2 DE69700572 T2 DE 69700572T2
Authority
DE
Germany
Prior art keywords
fiber optic
amplifier
communication system
low noise
optic communication
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 - Fee Related
Application number
DE69700572T
Other languages
English (en)
Other versions
DE69700572D1 (de
Inventor
Stephen Gregory Grubb
Kenneth Lee Walker
Andrew John Stentz
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.)
Furukawa Electric North America Inc
Original Assignee
Lucent Technologies Inc
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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of DE69700572D1 publication Critical patent/DE69700572D1/de
Application granted granted Critical
Publication of DE69700572T2 publication Critical patent/DE69700572T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin 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
    • H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
    • H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
    • 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
    • H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
    • 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
    • H01S3/06787—Bidirectional amplifier
    • 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
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S372/00—Coherent light generators
    • Y10S372/703—Optical isolater
DE69700572T 1996-02-12 1997-02-04 Rauscharmer faseroptischer Ramanverstärker und faseroptisches Kommunikationssystem mit einem solchen Verstärker Expired - Fee Related DE69700572T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/600,354 US5673280A (en) 1996-02-12 1996-02-12 Article comprising low noise optical fiber raman amplifier

Publications (2)

Publication Number Publication Date
DE69700572D1 DE69700572D1 (de) 1999-11-11
DE69700572T2 true DE69700572T2 (de) 2000-05-25

Family

ID=24403270

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69700572T Expired - Fee Related DE69700572T2 (de) 1996-02-12 1997-02-04 Rauscharmer faseroptischer Ramanverstärker und faseroptisches Kommunikationssystem mit einem solchen Verstärker

Country Status (4)

Country Link
US (1) US5673280A (de)
EP (1) EP0789432B1 (de)
JP (1) JP3025210B2 (de)
DE (1) DE69700572T2 (de)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0734105B1 (de) * 1995-03-20 2004-09-29 Fujitsu Limited Faseroptischer Verstärker und dispersionskompensierendes Fasermodul für faseroptischen Verstärker
US5778014A (en) * 1996-12-23 1998-07-07 Islam; Mohammed N. Sagnac raman amplifiers and cascade lasers
US6052393A (en) 1996-12-23 2000-04-18 The Regents Of The University Of Michigan Broadband Sagnac Raman amplifiers and cascade lasers
EP1914849B1 (de) * 1997-02-18 2011-06-29 Nippon Telegraph & Telephone Corporation Optischer Verstärker und Übertragungssystem damit
US6151338A (en) * 1997-02-19 2000-11-21 Sdl, Inc. High power laser optical amplifier system
US5815518A (en) * 1997-06-06 1998-09-29 Lucent Technologies Inc. Article comprising a cascaded raman fiber laser
KR100326039B1 (ko) * 1997-06-30 2002-09-05 삼성전자 주식회사 흡수체를갖는광증폭기
US6081366A (en) * 1997-08-28 2000-06-27 Lucent Technologies Inc. Optical fiber communication system with a distributed Raman amplifier and a remotely pumped er-doped fiber amplifier
US5920423A (en) * 1997-12-05 1999-07-06 Sdl, Inc. Multiple pumped fiber amplifiers for WDM communication systems with adjustment for the amplifier signal gain bandwidth
US5991069A (en) * 1998-01-22 1999-11-23 Tyco Submarine Systems, Ltd. Split-pumped dual stage optical fiber amplifier
WO1999043117A2 (en) * 1998-02-20 1999-08-26 Sdl, Inc. Upgradable, gain flattened fiber amplifiers for wdm applications
US6374006B1 (en) 1998-03-20 2002-04-16 Xtera Communications, Inc. Chirped period gratings for raman amplification in circulator loop cavities
US6600592B2 (en) 1998-03-24 2003-07-29 Xtera Communications, Inc. S+ band nonlinear polarization amplifiers
US6760148B2 (en) 1998-03-24 2004-07-06 Xtera Communications, Inc. Nonlinear polarization amplifiers in nonzero dispersion shifted fiber
US6356384B1 (en) 1998-03-24 2002-03-12 Xtera Communications Inc. Broadband amplifier and communication system
US6335820B1 (en) * 1999-12-23 2002-01-01 Xtera Communications, Inc. Multi-stage optical amplifier and broadband communication system
EP1088375B1 (de) 1998-06-16 2010-11-10 Xtera Communications, Inc. Dispersionskompensierendes und verstärkendes optisches element
US6359725B1 (en) 1998-06-16 2002-03-19 Xtera Communications, Inc. Multi-stage optical amplifier and broadband communication system
US6574037B2 (en) 1998-06-16 2003-06-03 Xtera Communications, Inc. All band amplifier
US6885498B2 (en) 1998-06-16 2005-04-26 Xtera Communications, Inc. Multi-stage optical amplifier and broadband communication system
US6344922B1 (en) * 1998-07-21 2002-02-05 Corvis Corporation Optical signal varying devices
US6236487B1 (en) * 1998-07-21 2001-05-22 Corvis Corporation Optical communication control system
WO2000005622A1 (fr) * 1998-07-23 2000-02-03 The Furukawa Electric Co., Ltd. Amplificateur raman, repeteur optique et procede d'amplification raman
US6567430B1 (en) 1998-09-21 2003-05-20 Xtera Communications, Inc. Raman oscillator including an intracavity filter and amplifiers utilizing same
US6181464B1 (en) * 1998-12-01 2001-01-30 Tycom (Us) Inc. Low noise Raman amplifier employing bidirectional pumping and an optical transmission system incorporating same
US6567207B1 (en) * 1999-05-12 2003-05-20 Corvis Corporation Optical transmission systems and optical amplifiers for use therein
US6587261B1 (en) * 1999-05-24 2003-07-01 Corvis Corporation Optical transmission systems including optical amplifiers and methods of use therein
DE60036353T2 (de) * 1999-05-31 2008-06-05 The Furukawa Electric Co., Ltd. Ramanverstärkungsmethode
FR2794912A1 (fr) * 1999-06-10 2000-12-15 Cit Alcatel Amplificateur raman hybride
FR2799056B1 (fr) * 1999-07-05 2002-09-06 Cit Alcatel Amplification raman deportee
FR2796213B1 (fr) * 1999-07-05 2001-10-05 Cit Alcatel Limitation de l'oscillation provoquee par l'amplification raman grace a l'usage de fibres differentes
ATE249116T1 (de) * 1999-07-08 2003-09-15 Cit Alcatel Isolatorverwendung zur überwindung von ramanverstärkungsbegrenzungen verursacht durch rayleighstreuung
US6611370B2 (en) * 1999-07-23 2003-08-26 The Furukawa Electric Co., Ltd. Raman amplifier system, apparatus and method for identifying, obtaining and maintaining an arbitrary Raman amplification performance
US6434172B1 (en) 1999-08-06 2002-08-13 Fitel Usa Corp. Article comprising a fiber raman device
FR2800218B1 (fr) * 1999-10-22 2002-01-11 Algety Telecom Systeme de transmission par fibre optique utilisant des impulsions rz
FR2800219B1 (fr) * 1999-10-22 2006-06-30 Algety Telecom Procede d'ajustement de puissance pour un systeme de transmission optique a multiplexage en longueur d'onde
WO2001052372A1 (en) 2000-01-12 2001-07-19 Xtera Communications, Inc. Raman amplifier with bi-directional pumping
EP1170628B1 (de) * 2000-01-14 2018-08-01 The Furukawa Electric Co., Ltd. Ramanverstärker
AU2001264548A1 (en) 2000-02-14 2001-10-23 Xtera Communications, Inc. Nonlinear optical loop mirror
US6384963B2 (en) * 2000-03-03 2002-05-07 Lucent Technologies Inc. Optical communication system with co-propagating pump radiation for raman amplification
US6344925B1 (en) 2000-03-03 2002-02-05 Corvis Corporation Optical systems and methods and optical amplifiers for use therein
US6697558B2 (en) 2000-03-03 2004-02-24 Fitel U.S.A. Corp Raman amplified optical system with reduction of four-wave mixing effects
DE10012881B4 (de) * 2000-03-16 2008-09-04 Nokia Siemens Networks Gmbh & Co.Kg Ramanverstärkeranordnung
US6433920B1 (en) 2000-04-27 2002-08-13 Jds Uniphase Corporation Raman-based utility optical amplifier
DE60116101T2 (de) 2000-07-10 2006-08-31 Mpb Technologies Inc., Pointe Claire Kaskadiertes pumpsystem zur verteilten ramanverstärkung in faseroptischen übertragungssystemen
US6310716B1 (en) * 2000-08-18 2001-10-30 Corning Incorporated Amplifier system with a discrete Raman fiber amplifier module
US6657774B1 (en) * 2000-08-18 2003-12-02 Corning Incorporated Amplifier system with distributed and discrete Raman fiber amplifiers
US6782199B1 (en) 2000-09-29 2004-08-24 Onetta, Inc. Optical communications systems with optical subsystem communications links
US6424457B1 (en) 2000-10-06 2002-07-23 Onetta, Inc. Optical amplifiers and methods for manufacturing optical amplifiers
US6441950B1 (en) 2000-11-03 2002-08-27 Onetta, Inc. Distributed raman amplifier systems with transient control
US6898351B2 (en) 2000-11-07 2005-05-24 Photon-X, Llc Optical fiber transmission systems with suppressed light scattering
US6490077B1 (en) 2000-11-20 2002-12-03 Corning Incorporated Composite optical amplifier
US6778320B1 (en) 2000-11-20 2004-08-17 Avanex Corporation Composite optical amplifier
US6417959B1 (en) 2000-12-04 2002-07-09 Onetta, Inc. Raman fiber amplifier
US6396623B1 (en) 2000-12-19 2002-05-28 Onetta, Inc. Wide-band optical amplifiers with interleaved gain stages
US6433921B1 (en) 2001-01-12 2002-08-13 Onetta, Inc. Multiwavelength pumps for raman amplifier systems
US6625347B1 (en) 2001-01-12 2003-09-23 Onetta, Inc. Pumps for Raman amplifier systems
US6417958B1 (en) 2001-01-24 2002-07-09 Lucent Technologies Inc. WDM optical communication system using co-propagating Raman amplification
EP1229675A3 (de) * 2001-02-02 2004-09-22 The Furukawa Electric Co., Ltd. Pumplichtquelle für Ramanverstärker und Ramanverstärker der diese verwendet
US6959021B2 (en) * 2001-02-07 2005-10-25 Ocg Technology Licensing, Llc Raman fiber laser
US6633430B1 (en) 2001-02-15 2003-10-14 Onetta, Inc. Booster amplifier with spectral control for optical communications systems
US6417965B1 (en) 2001-02-16 2002-07-09 Onetta, Inc. Optical amplifier control system
US6522459B1 (en) 2001-02-22 2003-02-18 Onetta, Inc. Temperature control and monitoring of optical detector components in an optical communication system
US6507430B2 (en) * 2001-02-23 2003-01-14 Photon X, Inc. Long wavelength optical amplifier
US6433922B1 (en) 2001-02-26 2002-08-13 Redc Optical Networks Ltd. Apparatus and method for a self adjusting Raman amplifier
US6624927B1 (en) 2001-03-14 2003-09-23 Onetta, Inc. Raman optical amplifiers
US6532101B2 (en) 2001-03-16 2003-03-11 Xtera Communications, Inc. System and method for wide band Raman amplification
US6810214B2 (en) 2001-03-16 2004-10-26 Xtera Communications, Inc. Method and system for reducing degradation of optical signal to noise ratio
US6850360B1 (en) 2001-04-16 2005-02-01 Bookham, Inc. Raman amplifier systems with diagnostic capabilities
WO2002093704A1 (en) 2001-05-15 2002-11-21 Ocg Technology Licensing, Llc Optical fiber and system containing same
US6556345B1 (en) 2001-06-21 2003-04-29 Onetta, Inc. Optical network equipment with control and data paths
US6456426B1 (en) 2001-06-28 2002-09-24 Onetta, Inc. Raman amplifiers with modulated pumps
WO2003005068A2 (en) * 2001-07-02 2003-01-16 Ogg Technology Licensing, Llc. Multi-wavelength optical fiber
US6687049B1 (en) 2001-07-03 2004-02-03 Onetta, Inc. Optical amplifiers with stable output power under low input power conditions
US6587259B2 (en) 2001-07-27 2003-07-01 Xtera Communications, Inc. System and method for controlling noise figure
US6621619B2 (en) 2001-07-30 2003-09-16 The United States Of America As Represented By The Secretary Of The Navy Hybrid brillouin/erbium doped fiber amplifier apparatus and method
WO2003014771A2 (en) * 2001-08-03 2003-02-20 Ocg Technology Licensing, Llc Optical fiber amplifier
US6577789B1 (en) 2001-09-26 2003-06-10 Onetta, Inc. Double-pass optical amplifiers and optical network equipment
US6781748B2 (en) 2001-09-28 2004-08-24 Photon-X, Llc Long wavelength optical amplifier
US6594071B1 (en) 2001-10-02 2003-07-15 Xtera Communications, Inc. Method and apparatus for amplifier control
KR100395430B1 (ko) * 2001-10-29 2003-08-21 이동한 라만 광섬유증폭기와 반도체 광증폭기의 결합장치
WO2003044569A2 (en) * 2001-11-19 2003-05-30 Photon-X, Inc. L band optical amplifier
US6819479B1 (en) 2001-12-20 2004-11-16 Xtera Communications, Inc. Optical amplification using launched signal powers selected as a function of a noise figure
US6690507B2 (en) * 2002-01-30 2004-02-10 Corning Incorporated Double-pumped raman amplifier
KR100407334B1 (ko) * 2002-03-07 2003-11-28 삼성전자주식회사 분산보상 어븀첨가 광섬유 증폭기
US6819478B1 (en) 2002-03-15 2004-11-16 Xtera Communications, Inc. Fiber optic transmission system with low cost transmitter compensation
US7058311B1 (en) 2002-03-15 2006-06-06 Xtera Communications, Inc. System and method for dispersion compensation in an optical communication system
US6768577B2 (en) 2002-03-15 2004-07-27 Fitel Usa Corp. Tunable multimode laser diode module, tunable multimode wavelength division multiplex raman pump, and amplifier, and a system, method, and computer program product for controlling tunable multimode laser diodes, raman pumps, and raman amplifiers
US7199919B2 (en) * 2002-03-15 2007-04-03 The Furukawa Electric Co., Ltd. Tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling tunable Raman pumps, and Raman amplifiers
US6778321B1 (en) 2002-03-15 2004-08-17 Xtera Communications, Inc. Fiber optic transmission system for a metropolitan area network
US7197245B1 (en) 2002-03-15 2007-03-27 Xtera Communications, Inc. System and method for managing system margin
US6825973B1 (en) 2002-03-15 2004-11-30 Xtera Communications, Inc. Reducing leading edge transients using co-propagating pumps
US20040208586A1 (en) * 2002-03-27 2004-10-21 Susumu Kinoshita System and method for amplifying signals in an optical network
US7242517B2 (en) * 2002-04-24 2007-07-10 Pirelli & C. S.P.A. Optical devices comprising series of birefringent waveplates
US6879434B2 (en) * 2002-07-11 2005-04-12 Fujitsu Network Communications, Inc. Distributed raman amplifier for optical network and method
US20040042061A1 (en) * 2002-08-30 2004-03-04 Islam Mohammed N. Controlling ASE in optical amplification stages implementing time modulated pump signals
JP4532061B2 (ja) * 2002-09-24 2010-08-25 古河電気工業株式会社 波形整形器、光パルス発生装置および光再生システム
US20040066550A1 (en) * 2002-10-02 2004-04-08 Jay Paul R. Optical pulse reshaping system
US7145716B2 (en) * 2002-12-19 2006-12-05 Pirelli & C. S.P.A. Multiple stage Raman optical amplifier
FR2853092A1 (fr) * 2003-03-31 2004-10-01 France Telecom Dispositif optique, notamment de suppression du bruit dit de double retro-diffusion rayleigh, et installation comportant un tel dispositif
EP1489763B1 (de) * 2003-06-19 2006-04-12 Alcatel Optischer Verstärker, Übertragungssystem und Verfahren zur Optimierung
US7483636B2 (en) * 2003-07-28 2009-01-27 Fujitsu Limited Optical network with sub-band rejection and bypass
US7206123B2 (en) * 2003-09-08 2007-04-17 The Furukawa Electric Co. Ltd. Raman amplifier, pump source for use in a raman amplifier and method for amplifying an optical signal
JP2005134628A (ja) * 2003-10-30 2005-05-26 Nippon Telegr & Teleph Corp <Ntt> 光伝送システムおよびラマン増幅装置
US7764719B2 (en) * 2007-07-06 2010-07-27 Deep Photonics Corporation Pulsed fiber laser
CN103441417B (zh) * 2013-09-17 2015-12-23 电子科技大学 一种新型多波长布里渊-拉曼光纤激光器
US10386247B2 (en) * 2016-09-29 2019-08-20 Ofs Fitel, Llc Extending a range of an optical fiber distributed sensing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782491A (en) * 1987-04-09 1988-11-01 Polaroid Corporation Ion doped, fused silica glass fiber laser
US5430572A (en) * 1993-09-30 1995-07-04 At&T Corp. High power, high gain, low noise, two-stage optical amplifier
US5323404A (en) * 1993-11-02 1994-06-21 At&T Bell Laboratories Optical fiber laser or amplifier including high reflectivity gratings

Also Published As

Publication number Publication date
JP3025210B2 (ja) 2000-03-27
EP0789432A1 (de) 1997-08-13
JPH09318981A (ja) 1997-12-12
DE69700572D1 (de) 1999-11-11
EP0789432B1 (de) 1999-10-06
US5673280A (en) 1997-09-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
8327 Change in the person/name/address of the patent owner

Owner name: FITEL USA CORP. (A DELAWARE CORP.), NORCROSS, GA.,

8328 Change in the person/name/address of the agent

Representative=s name: SCHOPPE, ZIMMERMANN, STOECKELER & ZINKLER, 82049 PU