CA2254544A1 - Method and system for controlling optical amplification in wavelength division multiplex optical transmission - Google Patents

Method and system for controlling optical amplification in wavelength division multiplex optical transmission Download PDF

Info

Publication number
CA2254544A1
CA2254544A1 CA002254544A CA2254544A CA2254544A1 CA 2254544 A1 CA2254544 A1 CA 2254544A1 CA 002254544 A CA002254544 A CA 002254544A CA 2254544 A CA2254544 A CA 2254544A CA 2254544 A1 CA2254544 A1 CA 2254544A1
Authority
CA
Canada
Prior art keywords
optical
wavelength division
dwdm
signals
division multiplex
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
CA002254544A
Other languages
French (fr)
Other versions
CA2254544C (en
Inventor
Dirk Bode
Bernd Teichmann
Jianhui Zhou
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.)
Nokia of America Corp
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 CA2254544A1 publication Critical patent/CA2254544A1/en
Application granted granted Critical
Publication of CA2254544C publication Critical patent/CA2254544C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Lasers (AREA)

Abstract

The present invention relates generally to the field of optical transmission and particularly to a method and a system for controlling optical amplification in wavelength division multiplex optical transmission. WDM systems currently under development will have eighty or more channels, i.e. modulated optical signals with different wavelengths (known as Dense Wavelength Division Multiplexing, DWDM). These DWDM systems are demanding optical amplifiers which, especially considering the cascadation of a plurality of optical amplifiers along the transmission path of the DWDM system, have only very limited tolerances in certain parameters. Among these parameters gain flatness and gain tilt are of special importance. The present invention discloses a method and a system which make use of auxiliary optical signals having a given power level which is equal for all auxiliary signals. Differences in the power levels of the auxiliary signals after optical amplification are used for the control of the optical amplifiers of the WDM system.
CA002254544A 1998-01-27 1998-11-26 Method and system for controlling optical amplification in wavelength division multiplex optical transmission Expired - Fee Related CA2254544C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98300561A EP0933894B1 (en) 1998-01-27 1998-01-27 Method and system for controlling optical amplification in wavelength division multiplex optical transmission
EP98300561.2 1998-01-27

Publications (2)

Publication Number Publication Date
CA2254544A1 true CA2254544A1 (en) 1999-07-27
CA2254544C CA2254544C (en) 2002-04-16

Family

ID=8234636

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002254544A Expired - Fee Related CA2254544C (en) 1998-01-27 1998-11-26 Method and system for controlling optical amplification in wavelength division multiplex optical transmission

Country Status (5)

Country Link
US (1) US6212001B1 (en)
EP (1) EP0933894B1 (en)
JP (1) JPH11275026A (en)
CA (1) CA2254544C (en)
DE (1) DE69838127T2 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838788A1 (en) * 1998-08-26 2000-03-09 Siemens Ag Controlled optical amplifier
JP3803000B2 (en) * 1999-09-28 2006-08-02 富士通株式会社 Method for monitoring optical power deviation between wavelengths, and optical equalizer and optical amplifier using the same
CA2366471A1 (en) 2000-01-14 2001-07-19 The Furukawa Electric Co., Ltd Raman amplifier
GB0013484D0 (en) * 2000-06-02 2000-07-26 Cit Alcatel A method and apparatus for providing gain shape compensation
JP3363133B2 (en) * 2000-07-21 2003-01-08 住友電気工業株式会社 Wavelength division multiplexing transmission method and system
DE10040791A1 (en) * 2000-08-21 2002-03-14 Siemens Ag Method and device for determining and compensating the tilt of the spectrum in an optical fiber of a data transmission link
US6456427B1 (en) * 2001-01-03 2002-09-24 Sycamore Networks, Inc. Systems and methods for reducing a signal spectrum tilt
US20020141009A1 (en) * 2001-03-28 2002-10-03 Jin Yu Performance monitoring for multi-port optical devices and systems
US6871020B1 (en) * 2001-04-03 2005-03-22 At&T Corp. Power spectrum monitoring and management in a wavelength division multiplexed network
US6941079B1 (en) 2001-05-24 2005-09-06 Cisco Technology, Inc. Optical demultiplexer with multi-channel power control and tilt compensation
JP4686906B2 (en) * 2001-06-04 2011-05-25 株式会社日立製作所 Wavelength multiplexing optical transmission equipment
GB2402282B (en) * 2001-07-26 2005-05-04 Fujitsu Ltd Optical repeater
GB2408862B (en) * 2001-07-26 2005-08-17 Fujitsu Ltd Optical repeater
JP4651231B2 (en) 2001-07-26 2011-03-16 富士通株式会社 Optical transmission system
JP4569064B2 (en) * 2001-09-27 2010-10-27 住友電気工業株式会社 Optical transmitter and wavelength division multiplexing transmission system
US7460296B2 (en) * 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US20040096215A1 (en) * 2002-08-20 2004-05-20 Evangelides Stephen G. Method and apparatus for performing system monitoring in a terminal independent interface located between a terrestrial optical terminal and an undersea optical transmission path
US20040126119A1 (en) * 2002-08-20 2004-07-01 Evangelides Stephen G. Method and apparatus for providing a terminal independent interface between a terrestrial optical terminal and an undersea optical transmission path
US20040096214A1 (en) * 2002-08-20 2004-05-20 Red Sky Systems, Inc. Method and apparatus for using optical idler tones for performance monitoring in a WDM optical transmission system
DE60304436T2 (en) * 2003-01-14 2006-08-24 Agilent Technologies, Inc. (n.d.Ges.d.Staates Delaware), Palo Alto Method and device for coupling a pilot tone into a digital signal
US20050013610A1 (en) * 2003-07-16 2005-01-20 Evangelides Stephen G. Optical performance monitoring between terminal equipment and an optical interface to an optical submarine transmission line
US20050232634A1 (en) * 2004-03-29 2005-10-20 Evangelides Stephen G Jr Undersea optical transmission system employing low power consumption optical amplifiers
US20080050121A1 (en) * 2004-06-17 2008-02-28 Evangelides Stephen G Submarine optical transmission systems having optical amplifiers of unitary design
US7619812B2 (en) 2004-08-11 2009-11-17 Siemens Aktiengesellschaft Method and arrangement for the rapid adjustment of the tilt of optical WDM signals
JP4746951B2 (en) 2005-09-28 2011-08-10 富士通株式会社 Optical amplifier and optical amplification method
JP4762773B2 (en) * 2006-04-03 2011-08-31 三菱電機株式会社 Optical transmission system, terminal station device and relay device
EP3207649A4 (en) 2014-10-14 2018-07-11 The Arizona Board of Regents on behalf of the University of Arizona Multi-wavelength balanced optical transmission networks
JP2019503120A (en) 2015-12-03 2019-01-31 ザ アリゾナ ボード オブ リージェンツ オン ビハーフ オブ ザ ユニバーシティー オブ アリゾナＴｈｅ Ａｒｉｚｏｎａ Ｂｏａｒｄ ｏｆ Ｒｅｇｅｎｔｓ ｏｎ ｂｅｈａｌｆ ｏｆ Ｔｈｅ Ｕｎｉｖｅｒｓｉｔｙ ｏｆ Ａｒｉｚｏｎａ Fast exploration of signal quality in WDM networks

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2787820B2 (en) * 1990-07-20 1998-08-20 キヤノン株式会社 WDM optical communication system and optical amplifier used therein
FR2715017B1 (en) * 1994-01-13 1996-02-16 Alcatel Nv Transmission method and optical link with spectral multiplexing with amplification.
GB9516017D0 (en) * 1995-08-04 1995-10-04 Stc Submarine Systems Ltd Optical level control in wavelength add-drop multiplexing branching units
JPH09116492A (en) * 1995-10-18 1997-05-02 Nec Corp Wavelength multiplex light amplifying/repeating method/ device
JP3739453B2 (en) * 1995-11-29 2006-01-25 富士通株式会社 Optical amplifier and optical communication system provided with the optical amplifier
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

Also Published As

Publication number Publication date
EP0933894A1 (en) 1999-08-04
CA2254544C (en) 2002-04-16
EP0933894B1 (en) 2007-07-25
DE69838127T2 (en) 2008-05-15
JPH11275026A (en) 1999-10-08
DE69838127D1 (en) 2007-09-06
US6212001B1 (en) 2001-04-03

Similar Documents

Publication Publication Date Title
CA2254544A1 (en) Method and system for controlling optical amplification in wavelength division multiplex optical transmission
US6259555B1 (en) Multi-band amplification system for dense wavelength division multiplexing
HK1054135A1 (en) Optical transmission systems using optical amplifiers and wavelength division multiplexing
US20010030787A1 (en) Optical network and switch control method for use in the optical network
CA2119503A1 (en) Wavelength Division Multiplexed Optical Communication Transmitters
CA2124708A1 (en) Spectrum-Sliced Fiber Amplifier Light Source for Multi-Channel Wavelength-Division-Multiplexed Applications
EP0910184A3 (en) Optical amplifier and optical communication system having the optical amplifier
EP0242802A3 (en) Optical-wavelength-division multiplex transmission system with an optical filter for spontaneous emission noise
WO1998006191A3 (en) Automatic feedback gain control in a doped fiber amplifier
AU1620095A (en) Amplified telecommunication system for wavelength-division multiplexing transmissions
JP2007006500A (en) Multi-band hybrid soa-raman amplifier for cwdm
EP0849968A3 (en) Optical communication system using wavelenght-division multiplexed light
US6941075B2 (en) Wavelength division multiplexing optical transmission method and system
IL124639A (en) Optical communication method and system using wavelength division multiplexing
EP0874480A2 (en) Photo signal amplification transmission system
CA2243096A1 (en) System of controlling wavelength division multiplexed optical amplifier and method thereof
WO1999012268A3 (en) Method and system for modular multiplexing and amplification in a multi-channel plan
EP1762029B1 (en) Wavelength division multiplex (wdm) optical demultiplexer
US7072585B2 (en) Per-channel optical amplification using saturation mode
CA2363365A1 (en) Optical transmission system having cascaded raman amplifiers which each have a number of pump sources
CA2342101A1 (en) Optical amplifiers and optical transmission path
GB2324667A (en) Wavelength multiplexed optical signal amplification control system
JP2710199B2 (en) Optical fiber amplifier for WDM transmission
US6748172B2 (en) Multi-channel light source generator in a WDM optical communication system
WO2002011338A1 (en) Wavelength division multiplex optical transmitter

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed