CA2363203A1 - Optical transmission systems including signal varying devices and methods - Google Patents

Optical transmission systems including signal varying devices and methods Download PDF

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Publication number
CA2363203A1
CA2363203A1 CA002363203A CA2363203A CA2363203A1 CA 2363203 A1 CA2363203 A1 CA 2363203A1 CA 002363203 A CA002363203 A CA 002363203A CA 2363203 A CA2363203 A CA 2363203A CA 2363203 A1 CA2363203 A1 CA 2363203A1
Authority
CA
Canada
Prior art keywords
signal
signal varying
methods
optical transmission
systems including
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
CA002363203A
Other languages
French (fr)
Other versions
CA2363203C (en
Inventor
Stephen G. Grubb
Raymond Zanoni
Thomas D. Stephens
Deepak Boggavarapu
Ruxiang Jin
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.)
Level 3 Communications LLC
Original Assignee
Corvis Corporation
Stephen G. Grubb
Raymond Zanoni
Thomas D. Stephens
Deepak Boggavarapu
Ruxiang Jin
Broadwing Corporation
Broadwing, Llc
Level 3 Communications, Llc
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22961833&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2363203(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Corvis Corporation, Stephen G. Grubb, Raymond Zanoni, Thomas D. Stephens, Deepak Boggavarapu, Ruxiang Jin, Broadwing Corporation, Broadwing, Llc, Level 3 Communications, Llc filed Critical Corvis Corporation
Publication of CA2363203A1 publication Critical patent/CA2363203A1/en
Application granted granted Critical
Publication of CA2363203C publication Critical patent/CA2363203C/en
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
    • H01S3/10—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
    • 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
    • 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
    • H04B10/293—Signal power control
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2935—Signal power control considering the whole optical path with a cascade of 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
    • 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
    • H01S3/05—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
    • H01S3/09—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
    • H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre 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
    • 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
    • H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
    • H01S3/094046—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser of a Raman fibre 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
    • 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
    • H01S3/094096—Multi-wavelength 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
    • 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
    • H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
    • H01S3/09415—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/003—Devices including multiple stages, e.g., multi-stage optical amplifiers or dispersion compensators

Abstract

An optical system (10) including plural optical processing nodes (14) in optical communication via a plurality of signal varying devices (12). A first signal varying device including an optical fiber (30) configured to produce Raman scattering/gain in a signal wavelength range and a first signal variation profile. A first pump (12) with multiwavelengths output stimulates Raman scattering/gain within the signal wavelength range. A second signal varying device (12) having a second signal variation profile to produce a cumulative signal variation profile that differs from the first and second signal variation profiles.
CA002363203A 1999-02-19 2000-02-18 Optical transmission systems including signal varying devices and methods Expired - Fee Related CA2363203C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/253,819 1999-02-19
US09/253,819 US6344922B1 (en) 1998-07-21 1999-02-19 Optical signal varying devices
PCT/US2000/004286 WO2000049721A2 (en) 1999-02-19 2000-02-18 Optical transmission systems including signal varying devices and methods

Publications (2)

Publication Number Publication Date
CA2363203A1 true CA2363203A1 (en) 2000-08-24
CA2363203C CA2363203C (en) 2008-04-29

Family

ID=22961833

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002363203A Expired - Fee Related CA2363203C (en) 1999-02-19 2000-02-18 Optical transmission systems including signal varying devices and methods

Country Status (6)

Country Link
US (3) US6344922B1 (en)
EP (1) EP1161780B1 (en)
AT (1) ATE336116T1 (en)
CA (1) CA2363203C (en)
DE (1) DE60029934T2 (en)
WO (1) WO2000049721A2 (en)

Families Citing this family (148)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6693737B2 (en) 1998-03-24 2004-02-17 Xtera Communications, Inc. Dispersion compensating nonlinear polarization amplifiers
US6101024A (en) 1998-03-24 2000-08-08 Xtera Communications, Inc. Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers
US6760148B2 (en) * 1998-03-24 2004-07-06 Xtera Communications, Inc. Nonlinear polarization amplifiers in nonzero dispersion shifted fiber
US6359725B1 (en) 1998-06-16 2002-03-19 Xtera Communications, Inc. Multi-stage optical amplifier and broadband communication system
US6335820B1 (en) * 1999-12-23 2002-01-01 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
US6344922B1 (en) * 1998-07-21 2002-02-05 Corvis Corporation Optical signal varying devices
EP2315073B1 (en) 1998-07-23 2014-12-31 The Furukawa Electric Co., Ltd. Raman amplifier and Raman amplification method
JP3527671B2 (en) * 1999-04-23 2004-05-17 富士通株式会社 Method of controlling wavelength characteristics of optical transmission power by Raman amplification, wavelength division multiplexing optical communication system and optical amplifier using the same
US6587261B1 (en) * 1999-05-24 2003-07-01 Corvis Corporation Optical transmission systems including optical amplifiers and methods of use therein
WO2000073849A1 (en) 1999-05-31 2000-12-07 The Furukawa Electric Co., Ltd. Raman amplification system and optical signal transmission method using the same
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
US6678087B1 (en) * 1999-08-06 2004-01-13 Nippon Telegraph And Telephone Corporation Optical amplifier and optical fiber communication system using the amplifier
WO2001051986A1 (en) * 2000-01-14 2001-07-19 The Furukawa Electric Co., Ltd. Raman amplifier
JP2001249369A (en) * 2000-03-02 2001-09-14 Nec Corp Optical amplifier and optical amplification repeater using the same, and wavelength multiplex transmission device
US6700696B2 (en) 2000-08-09 2004-03-02 Jds Uniphase Corporation High order fiber Raman amplifiers
JP2002062552A (en) * 2000-08-18 2002-02-28 Sumitomo Electric Ind Ltd Raman amplifier and optical communication system
DE10040790B4 (en) * 2000-08-21 2004-03-04 Siemens Ag Control method and optical data transmission link with a device for compensating for changes in the SRS-related power exchange
JP4821037B2 (en) * 2000-08-25 2011-11-24 富士通株式会社 Optical amplifier and Raman pump light source using Raman amplification
WO2002017010A1 (en) * 2000-08-25 2002-02-28 Fujitsu Limited Optical communication system, method of providing excitation light, and distributed raman amplifier
JP2002076482A (en) * 2000-08-31 2002-03-15 Fujitsu Ltd Optical amplifier, optical amplification method and optical amplification system
US6782199B1 (en) 2000-09-29 2004-08-24 Onetta, Inc. Optical communications systems with optical subsystem communications links
US6424455B1 (en) * 2000-10-03 2002-07-23 Tycom (Us) Inc. Wide bandwidth fiber raman amplifier
GB0024453D0 (en) * 2000-10-05 2000-11-22 Nortel Networks Ltd Raman amplification
US6424457B1 (en) 2000-10-06 2002-07-23 Onetta, Inc. Optical amplifiers and methods for manufacturing optical amplifiers
US6504989B1 (en) 2000-10-23 2003-01-07 Onetta, Inc. Optical equipment and methods for manufacturing optical communications equipment for networks
US6498677B1 (en) 2000-10-23 2002-12-24 Onetta, Inc. Optical amplifier systems with transient control
US6441950B1 (en) 2000-11-03 2002-08-27 Onetta, Inc. Distributed raman amplifier systems with transient control
US6594288B1 (en) 2000-11-06 2003-07-15 Cidra Corporation Tunable raman laser and amplifier
DE10056328A1 (en) * 2000-11-14 2002-05-29 Siemens Ag Raman amplifier with multiple pump sources
DE10056327A1 (en) * 2000-11-14 2002-05-29 Siemens Ag Process for amplifying optical signals
US6417959B1 (en) * 2000-12-04 2002-07-09 Onetta, Inc. Raman fiber amplifier
US6542287B1 (en) * 2000-12-12 2003-04-01 Onetta, Inc. Optical amplifier systems with transient control
US6396623B1 (en) 2000-12-19 2002-05-28 Onetta, Inc. Wide-band optical amplifiers with interleaved gain stages
GB0031508D0 (en) * 2000-12-22 2001-02-07 Cit Alcatel Broadband raman amplifier
JP2004518333A (en) 2001-01-05 2004-06-17 富士通株式会社 Long wavelength channel control method for wideband WDM optical fiber transmission system
US6625347B1 (en) 2001-01-12 2003-09-23 Onetta, Inc. Pumps for Raman amplifier systems
US6433921B1 (en) 2001-01-12 2002-08-13 Onetta, Inc. Multiwavelength pumps for raman amplifier systems
DE10101742A1 (en) * 2001-01-16 2002-07-25 Siemens Ag Pump source with several regulated pump lasers for optical broadband amplification of a WDM signal
JP2002229083A (en) 2001-01-31 2002-08-14 Sumitomo Electric Ind Ltd Optical communication system
CA2369766A1 (en) * 2001-02-02 2002-08-02 The Furukawa Electric Co., Ltd Pump light source for raman amplifier and raman amplifier using the same
JP4541574B2 (en) * 2001-02-07 2010-09-08 富士通株式会社 Optical repeater transmission system and optical repeater transmission method
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
JP4074750B2 (en) * 2001-02-20 2008-04-09 株式会社日立製作所 Optical amplification apparatus and gain characteristic monitoring method thereof
US6522459B1 (en) 2001-02-22 2003-02-18 Onetta, Inc. Temperature control and monitoring of optical detector components in an optical communication system
US6636345B2 (en) * 2001-02-27 2003-10-21 Corning Incorporated Optical fiber pumping system
EP1237306A1 (en) 2001-03-01 2002-09-04 The Furukawa Electric Co., Ltd. Optical transmission system using Raman amplifiers with unifrom gain
US6438010B1 (en) 2001-03-02 2002-08-20 Onetta, Inc. Drive circuits for microelectromechanical systems devices
DE10111491A1 (en) * 2001-03-09 2002-09-19 Siemens Ag Pump source with several pump lasers each for Raman amplification of a WDM signal with minimized four-wave mixing
US6624927B1 (en) 2001-03-14 2003-09-23 Onetta, Inc. Raman optical amplifiers
US6731424B1 (en) 2001-03-15 2004-05-04 Onetta, Inc. Dynamic gain flattening in an optical communication system
US6532101B2 (en) * 2001-03-16 2003-03-11 Xtera Communications, Inc. System and method for wide band Raman amplification
DE60100256T2 (en) 2001-03-16 2003-10-09 Alcatel Sa Wavelength multiplexed optical transmission system with Raman amplification
DE10112806C1 (en) * 2001-03-16 2002-10-10 Siemens Ag Pump source with increased pump power for optical broadband Raman amplification
DE10112805B4 (en) * 2001-03-16 2006-11-30 Siemens Ag Optical transmission system with improved signal-to-noise behavior
US6810214B2 (en) 2001-03-16 2004-10-26 Xtera Communications, Inc. Method and system for reducing degradation of optical signal to noise ratio
US6867905B1 (en) * 2001-03-28 2005-03-15 Cisco Technolog, Inc. Reduced four-wave mixing and raman amplification architecture
US6734954B2 (en) * 2001-04-04 2004-05-11 Nortel Networks Limited Method and system for automatic Raman gain control
JP4188573B2 (en) * 2001-04-09 2008-11-26 株式会社日立製作所 Optical amplifier amplification band expansion method, optical amplifier, and extension unit
US20020149838A1 (en) * 2001-04-11 2002-10-17 Quan-Zhen Wang Optical amplification system or group employing multiple pump laser groupings
US6850360B1 (en) * 2001-04-16 2005-02-01 Bookham, Inc. Raman amplifier systems with diagnostic capabilities
DE10120276B4 (en) * 2001-04-25 2004-01-29 Siemens Ag Method and transmission system for optimizing the transmission properties of an optical wavelength division multiplex system
US6525869B1 (en) * 2001-04-30 2003-02-25 Nortel Networks Limited Raman amplifier
US6529316B1 (en) 2001-05-03 2003-03-04 Onetta, Inc. Optical network equipment with optical channel monitor and dynamic spectral filter alarms
US6545800B1 (en) 2001-06-05 2003-04-08 Onetta, Inc. Depolarizers for optical channel monitors
US6697187B2 (en) * 2001-06-05 2004-02-24 Nortel Networks Limited Method and apparatus for Raman amplifier gain control
US6483631B1 (en) 2001-06-05 2002-11-19 Onetta, Inc. Optical amplifier spectral tilt controllers
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
US6687049B1 (en) 2001-07-03 2004-02-03 Onetta, Inc. Optical amplifiers with stable output power under low input power conditions
FR2827099A1 (en) * 2001-07-05 2003-01-10 Cit Alcatel STIMULATED RAMAN DIFFUSION AMPLIFICATION OPTICAL FIBER TRANSMISSION SYSTEM
JP2003021743A (en) * 2001-07-09 2003-01-24 Furukawa Electric Co Ltd:The Optical fiber and optical transmission system using the same
JP3824974B2 (en) 2001-07-13 2006-09-20 古河電気工業株式会社 Raman light amplification system
JP4647147B2 (en) * 2001-07-16 2011-03-09 富士通株式会社 Optical transmission method and optical transmission system using Raman amplification
US7116479B1 (en) 2001-07-19 2006-10-03 Wavesplitter Technologies, Inc. Array polarization beamsplitter and combiner
US6587259B2 (en) * 2001-07-27 2003-07-01 Xtera Communications, Inc. System and method for controlling noise figure
US6614586B2 (en) * 2001-07-30 2003-09-02 Dorsal Networks, Inc. Methods and systems for high performance, wide bandwidth optical communication systems using Raman amplification
US6924926B2 (en) 2001-08-03 2005-08-02 Xtera Communications, Inc. Laser diode pump sources
US6943936B2 (en) * 2001-08-03 2005-09-13 The Regents Of The University Of Michigan Co-propagating Raman amplifiers
US6577789B1 (en) 2001-09-26 2003-06-10 Onetta, Inc. Double-pass optical amplifiers and optical network equipment
JP4549591B2 (en) * 2001-09-28 2010-09-22 富士通株式会社 apparatus
US6594071B1 (en) 2001-10-02 2003-07-15 Xtera Communications, Inc. Method and apparatus for amplifier control
JP4083444B2 (en) * 2001-11-29 2008-04-30 富士通株式会社 Optical transmission system and optical transmission method using Raman amplification
US6903863B1 (en) * 2001-12-05 2005-06-07 Cisco Technology, Inc. Gain flattened bi-directionally pumped Raman amplifier for WDM transmission systems
GB0129717D0 (en) 2001-12-12 2002-01-30 Marconi Comm Ltd A method and an apparatus for signal transmission
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
JP2003188831A (en) * 2001-12-20 2003-07-04 Fujitsu Ltd Optical transmission system and optical repeater
JP3808766B2 (en) * 2001-12-21 2006-08-16 富士通株式会社 Raman amplifier and optical transmission system
US6825973B1 (en) 2002-03-15 2004-11-30 Xtera Communications, Inc. Reducing leading edge transients using co-propagating pumps
US6819478B1 (en) 2002-03-15 2004-11-16 Xtera Communications, Inc. Fiber optic transmission system with low cost transmitter compensation
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
US20040213511A1 (en) * 2002-03-19 2004-10-28 Scholz Christopher J. Erbium doped waveguide amplifier (EDWA) with pump reflector
US20040208585A1 (en) * 2002-03-20 2004-10-21 Sycamore Networks, Inc. Systems and methods for minimizing signal power and providing reduced Raman pump depletion for WDM optical system
CA2481678A1 (en) * 2002-04-12 2003-10-23 Corvis Corporation Optical communication systems including optical amplifiers and amplification methods
JP4083464B2 (en) * 2002-05-02 2008-04-30 富士通株式会社 Wavelength tunable light source device and optical amplifier using the same
US6646786B1 (en) 2002-05-06 2003-11-11 Cisco Technology, Inc. Copropagating Raman pump unit to suppress four-wave mixing crosstalk between pump modes and WDM signals
US7606494B1 (en) 2002-06-04 2009-10-20 Broadwing Corporation Optical transmission systems, devices, and methods
JP2004086143A (en) 2002-06-28 2004-03-18 Sumitomo Electric Ind Ltd Light transmission system
KR20040010125A (en) * 2002-06-28 2004-01-31 스미토모덴키고교가부시키가이샤 Optical transmission system
US7437082B1 (en) 2002-07-12 2008-10-14 Broadwing Corporation Private optical communications systems, devices, and methods
DE60210762T2 (en) * 2002-07-30 2007-01-04 Sumitomo Electric Industries, Inc. Optical transmission system with multiple Raman amplifiers with flat overall gain
WO2004031847A1 (en) 2002-10-02 2004-04-15 The Furukawa Electric Co., Ltd Raman amplifier and raman amplification system
JP3934529B2 (en) * 2002-10-30 2007-06-20 富士通株式会社 WDM optical communication system
JP4113761B2 (en) * 2002-11-05 2008-07-09 富士通株式会社 Optical amplifier
DE10256215A1 (en) * 2002-12-02 2004-06-24 Siemens Ag Pump module for a Raman amplifier for use in signal transmission by wavelength division multiplexing, whereby one or more pump signals of differing wavelengths are coupled into the optical fiber
DE60300033T2 (en) * 2003-01-13 2005-01-20 Alcatel S.A. Raman amplifier and method of exciting a Raman amplifier
EP1460737B1 (en) * 2003-03-13 2006-06-07 Fujitsu Limited Optical amplifier provided with control function of pumping light, and optical transmission system using the same
US7054059B1 (en) 2003-05-14 2006-05-30 Cisco Technoloy, Inc. Lumped Raman amplification structure for very wideband applications
WO2004114530A2 (en) * 2003-06-20 2004-12-29 Corvis Corporation Systems, devices, and methods for controlling non-linear optical interactions
JPWO2005004356A1 (en) * 2003-07-04 2006-08-17 日本電信電話株式会社 Optical fiber communication system using remote pumping.
US7542420B1 (en) 2003-09-04 2009-06-02 Broadwing Corporation Systems, devices, and methods utilizing port dimensioning strategies
US7274503B2 (en) * 2003-09-05 2007-09-25 Sprint Communications Company L.P. Distributed raman amplification
JP4558425B2 (en) * 2003-09-08 2010-10-06 古河電気工業株式会社 Raman amplifier, excitation source for use in Raman amplifier, method for amplifying optical signal
DE60304143T2 (en) 2003-10-30 2006-08-24 Alcatel Raman amplifier with gain control
JP4560300B2 (en) * 2004-02-05 2010-10-13 富士通株式会社 Raman optical amplifier, optical transmission system using the same, and Raman optical amplification method
US7522334B2 (en) * 2004-02-19 2009-04-21 Corvis Equipment Corporation Optical communication systems including optical amplifiers and amplification methods with flat noise figure profile
US20050226622A1 (en) * 2004-04-06 2005-10-13 Kddi Submarine Cable Systems Inc. Underwater repeater employing rare earth element doped fiber amplifier, Raman assist and optical pump source sparing
US20060127086A1 (en) * 2004-12-10 2006-06-15 Ciena Corporation Suppression of power transients in optically amplified links
US8373926B2 (en) * 2004-12-10 2013-02-12 Ciena Corporation Differentiation of power and channel count changes in optically amplified links
DE602004006007T2 (en) * 2004-12-23 2007-12-20 Alcatel Lucent Method for controlling the gain of a Raman amplifier
US20060140633A1 (en) * 2004-12-28 2006-06-29 Sanmina-Sci Corporation Systems and methods for optical pump redundancy
US7596323B1 (en) 2005-06-27 2009-09-29 Broadwing Corporation Optical communications systems, devices, and methods
US7466582B2 (en) * 2005-08-15 2008-12-16 International Business Machines Corporation Voltage controlled static random access memory
US7352609B2 (en) * 2005-08-15 2008-04-01 International Business Machines Corporation Voltage controlled static random access memory
EP1788728A1 (en) * 2005-11-18 2007-05-23 Alcatel Lucent Raman amplifier and optical transmission system
US7969647B2 (en) * 2007-10-08 2011-06-28 Jds Uniphase Corporation Apparatus and method for flattening gain profile of an optical amplifier
US7869673B2 (en) * 2008-08-29 2011-01-11 Xtera Communications, Inc. Remote larger effective area optical fiber
CZ303036B6 (en) * 2008-10-06 2012-03-07 CESNET Zájmové sdružení právnických osob Modular kit of a device for optical amplification of signal using Raman fiber amplifier
US8594502B2 (en) * 2009-04-15 2013-11-26 Ofs Fitel, Llc Method and apparatus using distributed raman amplification and remote pumping in bidirectional optical communication networks
JP5353582B2 (en) * 2009-09-10 2013-11-27 富士通株式会社 Optical amplifier
US20120002283A1 (en) * 2010-06-30 2012-01-05 Chongjin Xie Method and apparatus for raman co-pumps
EP2769444A4 (en) * 2011-10-19 2015-08-05 Ofs Fitel Llc Cascaded raman lasing system
US8817245B2 (en) 2012-08-23 2014-08-26 Ciena Corporation High-powered optical module safety systems and methods
EP2814188B1 (en) 2013-05-22 2019-02-13 Lumentum Operations LLC A transmission link with multiple order raman pumps
JP6248551B2 (en) * 2013-11-05 2017-12-20 富士通株式会社 Optical transmission system and optical transmission device
CN106464381B (en) * 2014-03-19 2019-08-13 海王星海底Ip有限公司 Multi sectional optical communication link with remote optical pumping formula amplifier
WO2017083929A1 (en) * 2015-11-18 2017-05-26 Macquarie University High power raman laser system and method
EP3217574A1 (en) * 2016-03-09 2017-09-13 Xieon Networks S.à r.l. A bidirectional and configurable directional raman pumping apparatus
US11177885B2 (en) * 2017-04-10 2021-11-16 Nec Corporation Repeater and repeating method
CN109120370B (en) * 2018-07-27 2020-05-12 武汉光迅科技股份有限公司 DWDM remote pumping system capable of improving OSNR
WO2020080144A1 (en) * 2018-10-18 2020-04-23 日本電気株式会社 Optical repeater and method of relaying optical signal
US10547404B1 (en) * 2018-11-13 2020-01-28 Ciena Corporation Automatic optical link calibration with channel holders
WO2020139707A1 (en) * 2018-12-28 2020-07-02 Nlight, Inc. Optical fiber devices and methods for reducing stimulated raman scattering (srs) light intensity in signal combined systems
WO2020225579A1 (en) * 2019-05-08 2020-11-12 Mellanox Technologies Ltd. Dual polarization unit for coherent transceiver or receiver
US11121797B1 (en) * 2020-08-04 2021-09-14 Fujitsu Limited Optical system for compensating for signal loss
US11502755B2 (en) 2021-03-26 2022-11-15 Rohde & Schwarz Gmbh & Co. Kg System for creating an adjustable delay

Family Cites Families (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342499A (en) 1979-03-19 1982-08-03 Hicks Jr John W Communications tuning construction
US4315666A (en) 1979-03-19 1982-02-16 Hicks Jr John W Coupled communications fibers
US4616898A (en) 1980-03-31 1986-10-14 Polaroid Corporation Optical communication systems using raman repeaters and components therefor
JPS56165437A (en) 1980-05-26 1981-12-19 Kokusai Denshin Denwa Co Ltd <Kdd> Optical repeating system for optical communication
GB2158603B (en) 1984-05-11 1987-07-29 Stc Plc Single mode optical fibre attenuators
US4699452A (en) * 1985-10-28 1987-10-13 American Telephone And Telegraph Company, At&T Bell Laboratories Optical communications system comprising Raman amplification means
JPH0727149B2 (en) * 1986-11-04 1995-03-29 沖電気工業株式会社 Optical coupler
US5228105A (en) * 1987-05-04 1993-07-13 Glista Andrew S Programmable electro-optic packaging and interconnect system
US4881790A (en) 1988-04-25 1989-11-21 American Telephone And Telegraph Company, At&T Bell Laboratories Optical communications system comprising raman amplification means
US5083874A (en) 1989-04-14 1992-01-28 Nippon Telegraph And Telephone Corporation Optical repeater and optical network using the same
US5058974A (en) * 1989-10-06 1991-10-22 At&T Bell Laboratories Distributed amplification for lightwave transmission system
US5007705A (en) * 1989-12-26 1991-04-16 United Technologies Corporation Variable optical fiber Bragg filter arrangement
US5039199A (en) 1989-12-29 1991-08-13 At&T Bell Laboratories Lightwave transmission system having remotely pumped quasi-distributed amplifying fibers
US5050949A (en) 1990-06-22 1991-09-24 At&T Bell Laboratories Multi-stage optical fiber amplifier
GB9016181D0 (en) 1990-07-24 1990-09-05 British Telecomm Optical waveguide amplifier
GB2249682B (en) * 1990-11-09 1995-03-29 Stc Plc Optical amplifiers
US5095519A (en) 1990-11-30 1992-03-10 At&T Bell Laboratories Apparatus and method for producing an in-line optical fiber attenuator
US5191586A (en) 1991-07-18 1993-03-02 General Instrument Corporation Narrow band incoherent optical carrier generator
US5500756A (en) 1992-02-28 1996-03-19 Hitachi, Ltd. Optical fiber transmission system and supervision method of the same
US5283686A (en) 1992-07-27 1994-02-01 General Instrument Corporation, Jerrold Communications Optical systems with grating reflector
US5579143A (en) 1993-06-04 1996-11-26 Ciena Corporation Optical system with tunable in-fiber gratings
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
JP2734969B2 (en) 1993-12-29 1998-04-02 日本電気株式会社 Optical fiber amplifier for WDM transmission
GB9411061D0 (en) 1994-06-02 1994-07-20 Northern Telecom Ltd Optical waveguide amplifiers
JP3846918B2 (en) 1994-08-02 2006-11-15 富士通株式会社 Optical transmission system, optical multiplex transmission system and related technologies
US5633974A (en) 1994-09-27 1997-05-27 The Whitaker Corporation All fiber attenuator
US5651085A (en) 1994-09-27 1997-07-22 Chia; Shin-Lo All fiber attenuator
US5541766A (en) 1994-11-30 1996-07-30 At&T Corp. Gain control for optically amplified systems
US5574589A (en) * 1995-01-09 1996-11-12 Lucent Technologies Inc. Self-amplified networks
JPH08248455A (en) 1995-03-09 1996-09-27 Fujitsu Ltd Optical amplifier for wavelength multiplexing
EP1841022A3 (en) 1995-03-20 2009-12-02 Fujitsu Limited Apparatus and method for processing an optical signal
JPH08265258A (en) * 1995-03-20 1996-10-11 Fujitsu Ltd Light amplification repeater
DE69628965T2 (en) * 1995-03-22 2004-02-26 Sun Microsystems, Inc., Mountain View Method and device for managing relationships between objects in a distributed object environment
JPH08278523A (en) 1995-04-05 1996-10-22 Hitachi Ltd Light amplifier
US5754320A (en) * 1995-08-18 1998-05-19 Nippon Telegraph And Telephone Corporation Optical cross-connect system
FR2738698B1 (en) 1995-09-08 1997-10-17 Alcatel Nv METHOD AND SYSTEM FOR EQUALIZING THE RESPECTIVE POWER LEVELS OF THE CHANNELS OF A SPECTRALLY MULTIPLEX OPTICAL SIGNAL
IT1277204B1 (en) 1995-10-19 1997-11-05 Pirelli S P A Ora Pirelli Cavi TRANSPARENT OPTICAL COMMUNICATION NETWORK WITH SELF-PROTECTED RING
US5696615A (en) 1995-11-13 1997-12-09 Ciena Corporation Wavelength division multiplexed optical communication systems employing uniform gain optical amplifiers
JP3422398B2 (en) * 1995-12-07 2003-06-30 富士通株式会社 Center-of-gravity wavelength monitoring method and apparatus, optical amplifier, and optical communication system
JP3861306B2 (en) * 1996-01-18 2006-12-20 Ｋｄｄｉ株式会社 Optical pulse generator
JP3730299B2 (en) 1996-02-07 2005-12-21 富士通株式会社 Optical equalization amplifier and optical equalization amplification method
US5673280A (en) * 1996-02-12 1997-09-30 Lucent Technologies Inc. Article comprising low noise optical fiber raman amplifier
JP3403288B2 (en) 1996-02-23 2003-05-06 古河電気工業株式会社 Optical amplifier
US6274313B1 (en) * 1996-03-21 2001-08-14 Pioneer-Hybrid International, Inc. Oligonucleotides with cationic phosphoramidate internucleoside linkages and methods of use
US5694512A (en) 1996-07-09 1997-12-02 Framatome Connectors Canada Inc. Compact tunable wavelength independent all-fiber optical attenuator and method of making same
US5764406A (en) 1996-10-01 1998-06-09 Corning Incorporated Hydrid optical amplifier having improved dynamic gain tilt
US6144474A (en) 1996-10-21 2000-11-07 Fujitsu Limited Optical transmission system including optical repeaters with selectively enabled gain equalizers contained therein and including an add/drop apparatus with a plurality of individually selectable filters
US6122298A (en) * 1996-11-01 2000-09-19 Tyco Submarine Systems Ltd. Multi-wavelength optical pump
US5880866A (en) 1996-11-13 1999-03-09 At&T Corp Time division demultiplexing using selective Raman amplification
US5900969A (en) 1997-02-14 1999-05-04 Lucent Technologies Inc. Broadband flat gain optical amplifier
JP3860278B2 (en) * 1997-03-13 2006-12-20 富士通株式会社 Remote pumping wavelength division multiplexing optical transmission system
WO1998042088A1 (en) 1997-03-17 1998-09-24 Sdl, Inc. Multiple stage optical fiber amplifier
EP0883217B1 (en) 1997-06-06 2003-10-29 Corning Photonic Technologies Inc. Optical fiber telecommunication system
EP0886174A3 (en) 1997-06-18 2001-03-07 Nippon Telegraph And Telephone Corporation White optical pulse source and applications
US5861981A (en) 1997-08-20 1999-01-19 Ditech Corporation Optical amplifier having dynamically shaped gain
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
US6038356A (en) * 1997-09-25 2000-03-14 Tyco Submarine Systems Ltd. Lightwave transmission system employing raman and rare-earth doped fiber amplification
JPH11112435A (en) * 1997-10-07 1999-04-23 Fujitsu Ltd Optical 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
US6275313B1 (en) * 1998-02-03 2001-08-14 Lucent Technologies Inc. Raman gain tilt equalization in optical fiber communication systems
JP3638777B2 (en) * 1998-02-04 2005-04-13 富士通株式会社 Method for gain equalization and apparatus and system used to implement the method
EP1036440A1 (en) 1998-02-20 2000-09-20 Ciena Corporation Optical amplifier having an improved noise figure
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
US6839522B2 (en) * 1998-07-21 2005-01-04 Corvis Corporation Optical signal varying devices, systems and methods
US6344922B1 (en) * 1998-07-21 2002-02-05 Corvis Corporation Optical signal varying devices
US6115174A (en) * 1998-07-21 2000-09-05 Corvis Corporation Optical signal varying devices
US6236487B1 (en) * 1998-07-21 2001-05-22 Corvis Corporation Optical communication control system
US6163636A (en) * 1999-01-19 2000-12-19 Lucent Technologies Inc. Optical communication system using multiple-order Raman amplifiers
US6088152A (en) * 1999-03-08 2000-07-11 Lucent Technologies Inc. Optical amplifier arranged to offset Raman gain
US6344925B1 (en) 2000-03-03 2002-02-05 Corvis Corporation Optical systems and methods and optical amplifiers for use therein

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ATE336116T1 (en) 2006-09-15
DE60029934D1 (en) 2006-09-21

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