IT1296849B1 - Equalizzatore ottico per un sistema di comunicazione ottica multiplato in lunghezza d'onda - Google Patents

Equalizzatore ottico per un sistema di comunicazione ottica multiplato in lunghezza d'onda

Info

Publication number
IT1296849B1
IT1296849B1 IT97MI002715A ITMI972715A IT1296849B1 IT 1296849 B1 IT1296849 B1 IT 1296849B1 IT 97MI002715 A IT97MI002715 A IT 97MI002715A IT MI972715 A ITMI972715 A IT MI972715A IT 1296849 B1 IT1296849 B1 IT 1296849B1
Authority
IT
Italy
Prior art keywords
communication system
wave length
optical
multiple wave
equalizer
Prior art date
Application number
IT97MI002715A
Other languages
English (en)
Inventor
Atsushi Toyohara
Original Assignee
Nec Corp
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 Nec Corp filed Critical Nec Corp
Publication of ITMI972715A1 publication Critical patent/ITMI972715A1/it
Application granted granted Critical
Publication of IT1296849B1 publication Critical patent/IT1296849B1/it

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
    • H04B10/25—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
    • H04J14/02216—Power control, e.g. to keep the total optical power constant by gain equalization
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Light Guides In General And Applications Therefor (AREA)
IT97MI002715A 1996-12-06 1997-12-05 Equalizzatore ottico per un sistema di comunicazione ottica multiplato in lunghezza d'onda IT1296849B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8326732A JPH10173597A (ja) 1996-12-06 1996-12-06 光イコライザ

Publications (2)

Publication Number Publication Date
ITMI972715A1 ITMI972715A1 (it) 1999-06-05
IT1296849B1 true IT1296849B1 (it) 1999-08-02

Family

ID=18191067

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97MI002715A IT1296849B1 (it) 1996-12-06 1997-12-05 Equalizzatore ottico per un sistema di comunicazione ottica multiplato in lunghezza d'onda

Country Status (4)

Country Link
US (1) US5933270A (it)
JP (1) JPH10173597A (it)
FR (1) FR2756994A1 (it)
IT (1) IT1296849B1 (it)

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US6078418A (en) * 1997-08-12 2000-06-20 Lucent Technologies Inc. Wavelength locking of variable dispersive elements
KR100277352B1 (ko) * 1997-08-25 2001-01-15 윤종용 다채널3단광섬유증폭기
EP0914015B1 (en) * 1997-10-28 2006-12-20 Nec Corporation Optical add-drop multiplexer
US6236498B1 (en) * 1998-02-20 2001-05-22 Sdl, Inc. Upgradable, gain flattened fiber amplifiers for WDM applications
SE513096C2 (sv) * 1998-10-02 2000-07-10 Ericsson Telefon Ab L M Förfarande och anordning för kanalutjämning av våglängdsmultiplexerade optiska system
GB2344238B (en) * 1998-11-28 2001-02-21 Marconi Comm Ltd Photonics system
JP2000174699A (ja) * 1998-12-02 2000-06-23 Nec Corp 波長多重伝送用光分波合波回路
US6377392B1 (en) * 1999-02-26 2002-04-23 Ciena Corporation Optical amplifier
SE514069C2 (sv) * 1999-04-30 2000-12-18 Ericsson Telefon Ab L M Optiskt våglängdsselektivt filter samt förfarande för att selektivt filtrera minst en våglängd från en grupp av våglängder
JP2000324053A (ja) * 1999-05-07 2000-11-24 Nec Corp 分岐装置
GB2363014B (en) * 1999-06-30 2002-02-13 Marconi Comm Ltd Optical System
GB9915234D0 (en) * 1999-06-30 1999-09-01 Marconi Comm Ltd Optical system
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
DE10000255A1 (de) * 2000-01-05 2001-07-26 Infineon Technologies Ag Anordnung zum Abgleich von WDM-Kanälen
DE60138935D1 (de) * 2000-02-23 2009-07-23 Fujitsu Ltd Optischer Verstärker
US6433920B1 (en) * 2000-04-27 2002-08-13 Jds Uniphase Corporation Raman-based utility optical amplifier
GB2362525B (en) * 2000-05-18 2002-07-24 Marconi Comm Ltd Radiation power equalization in wavelength division multiplexing (WDM) optical communication system
JP2002076482A (ja) * 2000-08-31 2002-03-15 Fujitsu Ltd 光増幅器，光増幅方法及び光増幅システム
US6487336B1 (en) * 2000-10-11 2002-11-26 General Photonics Corporation WDM channel equalization and control
JP2004524549A (ja) * 2000-10-31 2004-08-12 スリーエム イノベイティブ プロパティズ カンパニー Ｍｅｍｓ型波長イコライザ
US6959129B2 (en) 2000-12-22 2005-10-25 Metrophotonics Inc. Bidirectional multiplexer and demultiplexer based on a single echelle waveguide grating
DE10102460B4 (de) 2001-01-15 2011-03-17 Finisar Corp., Sunnyvale Anordnungen und Verfahren zur kanalabhängigen Abschwächung der Pegel einer Mehrzahl optischer Datenkanäle
US7019893B2 (en) * 2001-02-12 2006-03-28 Metrophotonics Inc. Optical dynamic gain amplifier
IL142773A (en) * 2001-03-08 2007-10-31 Xtellus Inc Fiber optic damper
US6549865B2 (en) * 2001-03-15 2003-04-15 Jds Uniphase Inc. Method of controlling a dynamic gain controller
CA2349028A1 (en) * 2001-05-28 2002-11-28 Optenia, Inc. Integrated double pass demultiplexer/variable optical attenuator for channel equalization
US6687047B2 (en) * 2001-05-29 2004-02-03 Dorsal Networks, Inc. Shared forward pumping in optical communications network
EP1436870A2 (en) 2001-10-09 2004-07-14 Infinera Corporation TRANSMITTER PHOTONIC INTEGRATED CIRCUITS (TxPIC) AND OPTICAL TRANSPORT NETWORKS EMPLOYING TxPICs
JP4000251B2 (ja) 2001-10-31 2007-10-31 富士通株式会社 光信号交換装置およびその制御方法
US6862395B2 (en) * 2001-11-16 2005-03-01 Nortel Networks Limited Attenuation devices
KR100419411B1 (ko) * 2002-03-19 2004-02-21 삼성전자주식회사 이득 평탄화 광섬유 증폭기
US6836604B2 (en) * 2002-06-27 2004-12-28 Intel Corporation Passive optical channel equalizer apparatus, methods and systems
US20040021931A1 (en) * 2002-07-31 2004-02-05 Stanton Stuart T. Article including an optical gain equalizer
US6859324B2 (en) * 2002-07-31 2005-02-22 Agere Systems Inc. Optical demultiplexer/multiplexer architecture
JP4170043B2 (ja) * 2002-08-13 2008-10-22 富士通株式会社 記録媒体駆動装置
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)
JP2004147086A (ja) 2002-10-24 2004-05-20 Sumitomo Electric Ind Ltd 光伝送システム、光合波器および光分波器
US6917747B2 (en) * 2003-02-26 2005-07-12 National Research Council Of Canada Compact hybrid integrated optical dynamic channel equalizer
EP1635211B1 (en) 2003-06-19 2011-08-17 Nippon Telegraph And Telephone Corporation Optical modulation apparatus
US7106930B2 (en) * 2003-07-23 2006-09-12 Jds Uniphase Corporation Dynamic optical demultiplexer/multiplexer formed within a PLC
US7555220B2 (en) * 2003-10-22 2009-06-30 Infinera Corporation Chromatic dispersion compensator (CDC) in a photonic integrated circuit (PIC) chip and method of operation
JP4400317B2 (ja) * 2003-11-14 2010-01-20 住友電気工業株式会社 光部品
US7062120B2 (en) * 2003-11-14 2006-06-13 Sumitomo Electric Industries, Ltd. Optical device and movable reflector
JP4929664B2 (ja) 2005-03-14 2012-05-09 富士通株式会社 光増幅器の制御装置、光増幅器の制御方法、光伝送装置、光増幅器、帯域単位利得等化器を用いた光増幅器及び帯域単位利得等化器を用いた波長多重伝送システム
JP5135849B2 (ja) 2007-03-30 2013-02-06 富士通株式会社 利得制御装置，光伝送装置および光増幅器の利得制御方法
US20200195349A1 (en) * 2017-02-22 2020-06-18 Nec Corporation Optical relay system

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US5276543A (en) * 1991-11-22 1994-01-04 Gte Laboratories Incorporated Optical signal equalizer for wavelength division multiplexed optical fiber systems
US5579143A (en) * 1993-06-04 1996-11-26 Ciena Corporation Optical system with tunable in-fiber gratings
US5392154A (en) * 1994-03-30 1995-02-21 Bell Communications Research, Inc. Self-regulating multiwavelength optical amplifier module for scalable lightwave communications systems
GB9411061D0 (en) * 1994-06-02 1994-07-20 Northern Telecom Ltd Optical waveguide amplifiers
FR2725283B1 (fr) * 1994-09-29 1996-11-22 Alcatel Nv Amplificateur optique regule a circulateur optique
US5519796A (en) * 1995-03-06 1996-05-21 International Business Machines Corporation Gain equalization using monolithic planar waveguide grating multiplexer and demultiplexer
JP2977024B2 (ja) * 1996-12-03 1999-11-10 日本電気株式会社 波長多重通信用光回路及びこれを含む光伝送通信システム

Also Published As

Publication number Publication date
JPH10173597A (ja) 1998-06-26
ITMI972715A1 (it) 1999-06-05
FR2756994A1 (fr) 1998-06-12
US5933270A (en) 1999-08-03

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