CA2163019A1 - Reduction of Interferometric Noise in an Optical Network - Google Patents

Reduction of Interferometric Noise in an Optical Network

Info

Publication number
CA2163019A1
CA2163019A1 CA2163019A CA2163019A CA2163019A1 CA 2163019 A1 CA2163019 A1 CA 2163019A1 CA 2163019 A CA2163019 A CA 2163019A CA 2163019 A CA2163019 A CA 2163019A CA 2163019 A1 CA2163019 A1 CA 2163019A1
Authority
CA
Canada
Prior art keywords
optical network
baseband
reduction
noise power
interferometric noise
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
CA2163019A
Other languages
French (fr)
Other versions
CA2163019C (en
Inventor
Mohammed Shabeer
Peter Edward Barnsley
Moshe Tur
Peter Jonathon Legg
David Kennedy Hunter
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.)
British Telecommunications PLC
Original Assignee
Mohammed Shabeer
Peter Edward Barnsley
Moshe Tur
Peter Jonathon Legg
David Kennedy Hunter
British Telecommunications Public Limited Company
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 Mohammed Shabeer, Peter Edward Barnsley, Moshe Tur, Peter Jonathon Legg, David Kennedy Hunter, British Telecommunications Public Limited Company filed Critical Mohammed Shabeer
Publication of CA2163019A1 publication Critical patent/CA2163019A1/en
Application granted granted Critical
Publication of CA2163019C publication Critical patent/CA2163019C/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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • 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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection

Abstract

In an optical network through which data is transmitted as a stream of bits during successive bit periods by an optical source with a given centre frequency, to a receiver for detecting a frequency baseband, interferometric noise power, in particular incoherent beat noise power, is minimised by causing a variation in the centre frequency of the source such as to cause a redistribution of the incoherent beat noise power from the baseband to higher frequencies thereby reducing the noise in the baseband.
CA002163019A 1993-05-28 1994-05-27 Reduction of interferometric noise in an optical network Expired - Fee Related CA2163019C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9311169.8 1993-05-28
GB939311169A GB9311169D0 (en) 1993-05-28 1993-05-28 Switching networks
PCT/GB1994/001149 WO1994028648A1 (en) 1993-05-28 1994-05-27 Reduction of interferometric noise in an optical network

Publications (2)

Publication Number Publication Date
CA2163019A1 true CA2163019A1 (en) 1994-12-08
CA2163019C CA2163019C (en) 2000-02-22

Family

ID=10736361

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002163019A Expired - Fee Related CA2163019C (en) 1993-05-28 1994-05-27 Reduction of interferometric noise in an optical network

Country Status (9)

Country Link
US (1) US6134037A (en)
EP (1) EP0700608B1 (en)
JP (1) JP3588114B2 (en)
KR (1) KR960702969A (en)
AU (1) AU681403B2 (en)
CA (1) CA2163019C (en)
DE (1) DE69420267T2 (en)
GB (1) GB9311169D0 (en)
WO (1) WO1994028648A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19822616A1 (en) * 1998-05-20 1999-11-25 Sel Alcatel Ag Light source and method for the transmission of spectrally coded data
KR100325687B1 (en) * 1999-12-21 2002-02-25 윤덕용 A low-cost WDM source with an incoherent light injected Fabry-Perot semiconductor laser diode
KR100955129B1 (en) 2003-05-30 2010-04-28 정보통신연구진흥원 wavelength-division multiple access passive optical network using the incoherent broadband light source
US7313157B2 (en) * 2003-12-19 2007-12-25 Novera Optics, Inc. Integration of laser sources and detectors for a passive optical network
JP2006162464A (en) * 2004-12-08 2006-06-22 Fujitsu Ltd Method and instrument for measuring coherent crosstalk light
KR100698766B1 (en) 2005-09-07 2007-03-23 한국과학기술원 Apparatus for Monitoring Failure Positions in Wavelength Division Multiplexing-Passive Optical Networks and Wavelength Division Multiplexing-Passive Optical Network Systems Having the Apparatus
KR100785436B1 (en) 2005-09-20 2007-12-13 한국과학기술원 Wavelength division multiplexing passive optical network for convergence broadcasting service and communication service
JP4827672B2 (en) * 2006-09-21 2011-11-30 富士通株式会社 WDM optical transmission system and WDM optical transmission method
US8571410B2 (en) * 2006-10-11 2013-10-29 Novera Optics, Inc. Mutual wavelength locking in WDM-PONS
US8005358B2 (en) * 2007-07-24 2011-08-23 Tyco Electronics Subsea Communications Llc System and method for suppressing beat noise in line monitoring equipment
JP7351624B2 (en) * 2019-03-11 2023-09-27 日清紡マイクロデバイス株式会社 Target object detection device, system, program and method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0478235A (en) * 1990-07-18 1992-03-12 Fujitsu Ltd Direct modulation psk transmission system and automatic frequency control method and demodulation and phase noise suppression method in the system
US5508845A (en) * 1990-10-18 1996-04-16 Telstra Corporation Limited Quasi-soliton communication system

Also Published As

Publication number Publication date
GB9311169D0 (en) 1993-07-14
EP0700608B1 (en) 1999-08-25
WO1994028648A1 (en) 1994-12-08
DE69420267D1 (en) 1999-09-30
KR960702969A (en) 1996-05-23
EP0700608A1 (en) 1996-03-13
AU6801494A (en) 1994-12-20
DE69420267T2 (en) 2000-12-21
CA2163019C (en) 2000-02-22
AU681403B2 (en) 1997-08-28
JP3588114B2 (en) 2004-11-10
JPH08508382A (en) 1996-09-03
US6134037A (en) 2000-10-17

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Legal Events

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