WO2002009299A3 - Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system - Google Patents

Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system Download PDF

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Publication number
WO2002009299A3
WO2002009299A3 PCT/US2001/022257 US0122257W WO0209299A3 WO 2002009299 A3 WO2002009299 A3 WO 2002009299A3 US 0122257 W US0122257 W US 0122257W WO 0209299 A3 WO0209299 A3 WO 0209299A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical
emphasis
transmission
path
respective channels
Prior art date
Application number
PCT/US2001/022257
Other languages
French (fr)
Other versions
WO2002009299A2 (en
WO2002009299A9 (en
Inventor
Jianying Zhou
Richard A Barry
Murat Azizoglu
Eric A Swanson
Original Assignee
Sycamore Networks 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 Sycamore Networks Inc filed Critical Sycamore Networks Inc
Priority to AU2001278925A priority Critical patent/AU2001278925A1/en
Publication of WO2002009299A2 publication Critical patent/WO2002009299A2/en
Publication of WO2002009299A3 publication Critical patent/WO2002009299A3/en
Publication of WO2002009299A9 publication Critical patent/WO2002009299A9/en

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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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/25073—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion using spectral equalisation, e.g. spectral filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/25—Distortion or dispersion compensation
    • H04B2210/258—Distortion or dispersion compensation treating each wavelength or wavelength band separately

Abstract

A Dense Wavelength Division Multiplexed (DWDM) optical transmission system that compensates for unequal channel performance over an extended fiber transmission distance. The DWDM optical transmission system (300) includes optical transmitters at a transmitter end (302) of a transmission path for transmitting respective channels of information at different wavelengths, a first pre-emphasis device for performing a first pre-emphasis technique on the respective channels, an optical multiplexor (310) for combining the respective channels into a multi-wavelength optical signal for transmission on a single transmission fiber, at least one optical amplifier (304) for amplifying the optical signal along the path, at least one second pre-emphasis device (314) disposed along the path for performing a second pre-emphasis technique on the respective channels, an optical de-multiplexor (312) for separating the optical signal into its component channels, and optical receivers at a receiver end (306) of the path for receiving and detecting the information carried by the respective channels. The first and second pre-emphasis techniques performed by the respective first and second pre-emphasis devices compensate for unequal channel performance along the transmission path over a desired fiber transmission distance.
PCT/US2001/022257 2000-07-21 2001-07-16 Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system WO2002009299A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001278925A AU2001278925A1 (en) 2000-07-21 2001-07-16 Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US21983000P 2000-07-21 2000-07-21
US60/219,830 2000-07-21
US26156401P 2001-01-12 2001-01-12
US60/261,564 2001-01-12

Publications (3)

Publication Number Publication Date
WO2002009299A2 WO2002009299A2 (en) 2002-01-31
WO2002009299A3 true WO2002009299A3 (en) 2002-06-06
WO2002009299A9 WO2002009299A9 (en) 2003-04-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/022257 WO2002009299A2 (en) 2000-07-21 2001-07-16 Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified dwdm system

Country Status (3)

Country Link
US (1) US6456409B2 (en)
AU (1) AU2001278925A1 (en)
WO (1) WO2002009299A2 (en)

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WO2003030428A1 (en) * 2001-10-03 2003-04-10 Tejas Networks India Pvt. Ltd. System for improving osnr of dwdm transmission system
WO2003029861A1 (en) * 2001-10-03 2003-04-10 Tejas Networks India Pvt. Ltd. Improving optical signal to noise ratio system
WO2003030427A1 (en) * 2001-10-03 2003-04-10 Tejas Networks India Pvt. Ltd. Improving osnr of optically amplified dwdm transmission system
US20030067655A1 (en) * 2001-10-05 2003-04-10 Bo Pedersen Methods and systems for integrated IP routers and long haul/ultra long haul optical communication transceivers
AU2002334906A1 (en) 2001-10-09 2003-04-22 Infinera Corporation Transmitter photonic integrated circuits (txpic) and optical transport networks employing txpics
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JP2003143113A (en) * 2001-10-30 2003-05-16 Fujitsu Ltd Wavelength multiplexed optical transmission system, centralized management apparatus used for the system, and method for controlling pre-emphasis in the system
US20030185570A1 (en) * 2002-03-28 2003-10-02 Hayee M. Imran Systems and methods for gain pre-compensation in optical communication systems
GB0213385D0 (en) * 2002-06-11 2002-07-24 Marconi Comm Ltd Maximising power in optical communications networks
DE10228750A1 (en) 2002-06-27 2004-02-05 Siemens Ag Method for measuring the signal-to-noise ratios OSNR in a wavelength division multiplex (-WDM) transmission system
US7149433B2 (en) 2002-06-28 2006-12-12 Infineria Corporation Upgrade of optical amplifier site to a digital optical network site in an optical transmission network
DE10236936B4 (en) * 2002-08-12 2011-06-09 Nokia Siemens Networks Gmbh & Co.Kg Method for controlling signal-to-noise ratios of signals transmitted in channels in a WDM transmission system
US7162113B2 (en) * 2002-10-08 2007-01-09 Infinera Corporation Deployment of electro-optic amplitude varying elements (AVEs) and electro-optic multi-functional elements (MFEs) in photonic integrated circuits (PICs)
DE102004018166A1 (en) 2003-05-08 2004-12-16 Siemens Ag Pre-emphasis method for optical multiplex signal in optical transmission system has new signal values calculated from actual signal powers at transmitter and receiver and mean power at transmission side
US7469103B2 (en) * 2005-04-08 2008-12-23 Cisco Technology, Inc. Add/drop multiplexer for OTN/DWDM rings utilizing a pair of muxponders
JP4935279B2 (en) * 2006-09-28 2012-05-23 富士通株式会社 OSNR measuring apparatus and OSNR measuring method
CN102265130B (en) * 2008-10-27 2014-12-10 爱立信电话股份有限公司 Method and apparatus for determining a signal transfer characteristic along a light path in an optical network
JP6103097B1 (en) * 2016-03-18 2017-03-29 日本電気株式会社 Optical transmission apparatus and control method thereof
US20170297535A1 (en) * 2016-04-15 2017-10-19 GM Global Technology Operations LLC Systems For Cleaning A Camera Mounted In A Side Mirror Or Other Vehicle Component
US11536916B1 (en) * 2021-05-10 2022-12-27 Amazon Technologies, Inc. Pathloss optimization for optical systems

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US5953139A (en) * 1996-03-06 1999-09-14 Cfx Communications Systems, Llc Wavelength division multiplexing system
US6040933A (en) * 1997-12-19 2000-03-21 Nortel Networks Corporation Method and apparatus for channel equalization in wavelength division multiplexed systems
US6115157A (en) * 1997-12-24 2000-09-05 Nortel Networks Corporation Methods for equalizing WDM systems
US6157475A (en) * 1998-09-30 2000-12-05 Alcatel Optical channel regulator and method

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JPH0946318A (en) * 1995-08-01 1997-02-14 Fujitsu Ltd Wavelength multiplexed optical transmission system and optical transmitter to be used for same
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US5953139A (en) * 1996-03-06 1999-09-14 Cfx Communications Systems, Llc Wavelength division multiplexing system
US5915052A (en) * 1997-06-30 1999-06-22 Uniphase Telecommunications Products, Inc. Loop status monitor for determining the amplitude of the signal components of a multi-wavelength optical beam
US6040933A (en) * 1997-12-19 2000-03-21 Nortel Networks Corporation Method and apparatus for channel equalization in wavelength division multiplexed systems
US6115157A (en) * 1997-12-24 2000-09-05 Nortel Networks Corporation Methods for equalizing WDM systems
US6157475A (en) * 1998-09-30 2000-12-05 Alcatel Optical channel regulator and method

Also Published As

Publication number Publication date
WO2002009299A2 (en) 2002-01-31
AU2001278925A1 (en) 2002-02-05
US6456409B2 (en) 2002-09-24
WO2002009299A9 (en) 2003-04-10
US20020015201A1 (en) 2002-02-07

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