CA2082319A1 - Optical signal equalizer for wavelength division multiplexed optical fiber systems - Google Patents

Optical signal equalizer for wavelength division multiplexed optical fiber systems

Info

Publication number
CA2082319A1
CA2082319A1 CA002082319A CA2082319A CA2082319A1 CA 2082319 A1 CA2082319 A1 CA 2082319A1 CA 002082319 A CA002082319 A CA 002082319A CA 2082319 A CA2082319 A CA 2082319A CA 2082319 A1 CA2082319 A1 CA 2082319A1
Authority
CA
Canada
Prior art keywords
wavelength division
division multiplexed
optical fiber
fiber systems
signal equalizer
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
CA002082319A
Other languages
French (fr)
Other versions
CA2082319C (en
Inventor
Robert Olshansky
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.)
Verizon Laboratories Inc
Original Assignee
GTE Laboratories 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 GTE Laboratories Inc filed Critical GTE Laboratories Inc
Publication of CA2082319A1 publication Critical patent/CA2082319A1/en
Application granted granted Critical
Publication of CA2082319C publication Critical patent/CA2082319C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B10/25—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

Abstract

This invention disclosure describes the application of a polarization insensitive acoustically-tuned optical filter used in a multichannel WDM system to equalize variations in the power level of the WDM channels. The invention also describes a simple means for providing a low frequency control system which enables the equalizer to determine the signal levels of N optical carriers prior to equalizing the signals.
CA002082319A 1991-11-22 1992-11-06 Optical signal equalizer for wavelength division multiplexed optical fiber systems Expired - Lifetime CA2082319C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/796,165 US5276543A (en) 1991-11-22 1991-11-22 Optical signal equalizer for wavelength division multiplexed optical fiber systems
US07/796,165 1991-11-22

Publications (2)

Publication Number Publication Date
CA2082319A1 true CA2082319A1 (en) 1993-05-23
CA2082319C CA2082319C (en) 2004-01-20

Family

ID=25167493

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002082319A Expired - Lifetime CA2082319C (en) 1991-11-22 1992-11-06 Optical signal equalizer for wavelength division multiplexed optical fiber systems

Country Status (5)

Country Link
US (1) US5276543A (en)
EP (1) EP0543314B1 (en)
JP (1) JPH05347601A (en)
CA (1) CA2082319C (en)
DE (1) DE69222829T2 (en)

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JP3995781B2 (en) * 1998-02-02 2007-10-24 富士通株式会社 Optical branching / inserting device and optical branching device using wavelength selective filter
US7116907B1 (en) 1998-02-20 2006-10-03 Fujitsu Limited Acousto-optical tunable filters cascaded together
JP3639109B2 (en) * 1998-04-02 2005-04-20 富士通株式会社 Optical transmission device, optical transmission system, and optical terminal
US6451349B1 (en) 1998-08-19 2002-09-17 Quadrant Healthcare (Uk) Limited Spray-drying process for the preparation of microparticles
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US7593647B2 (en) * 2002-09-19 2009-09-22 Novera Optics, Inc. Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal
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US7515626B2 (en) * 2003-05-29 2009-04-07 Novera Optics, Inc. Light source capable of lasing that is wavelength locked by an injected light signal
KR100955129B1 (en) * 2003-05-30 2010-04-28 정보통신연구진흥원 wavelength-division multiple access passive optical network using the incoherent broadband light source
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US20060153566A1 (en) * 2005-01-13 2006-07-13 Sorin Wayne V Methods and apparatuses to provide a wavelength-division-multiplexing passive optical network with asymmetric data rates
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Also Published As

Publication number Publication date
US5276543A (en) 1994-01-04
DE69222829T2 (en) 1998-02-19
EP0543314B1 (en) 1997-10-22
JPH05347601A (en) 1993-12-27
EP0543314A3 (en) 1993-11-03
EP0543314A2 (en) 1993-05-26
CA2082319C (en) 2004-01-20
DE69222829D1 (en) 1997-11-27

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EEER Examination request
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