HK137696A - Optical networks - Google Patents

Optical networks

Info

Publication number
HK137696A
HK137696A HK137696A HK137696A HK137696A HK 137696 A HK137696 A HK 137696A HK 137696 A HK137696 A HK 137696A HK 137696 A HK137696 A HK 137696A HK 137696 A HK137696 A HK 137696A
Authority
HK
Hong Kong
Prior art keywords
pct
modulator
date nov
sec
frequencies
Prior art date
Application number
HK137696A
Other languages
English (en)
Inventor
David Wynford Faulkner
Andrew Robert John Cook
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Publication of HK137696A publication Critical patent/HK137696A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Glass Compositions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
HK137696A 1989-05-25 1996-07-25 Optical networks HK137696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898912012A GB8912012D0 (en) 1989-05-25 1989-05-25 Optical networks

Publications (1)

Publication Number Publication Date
HK137696A true HK137696A (en) 1996-08-02

Family

ID=10657315

Family Applications (1)

Application Number Title Priority Date Filing Date
HK137696A HK137696A (en) 1989-05-25 1996-07-25 Optical networks

Country Status (9)

Country Link
US (1) US5272556A (xx)
EP (1) EP0473667B1 (xx)
JP (1) JPH04505531A (xx)
AT (1) ATE112657T1 (xx)
CA (1) CA2057881C (xx)
DE (1) DE69013151T2 (xx)
GB (1) GB8912012D0 (xx)
HK (1) HK137696A (xx)
WO (1) WO1990014734A1 (xx)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519830A (en) * 1993-06-10 1996-05-21 Adc Telecommunications, Inc. Point-to-multipoint performance monitoring and failure isolation system
US5408462A (en) * 1993-10-07 1995-04-18 Adc Telecommunications, Inc. Protection switching apparatus and method
US5453737A (en) * 1993-10-08 1995-09-26 Adc Telecommunications, Inc. Control and communications apparatus
US6018528A (en) * 1994-04-28 2000-01-25 At&T Corp System and method for optimizing spectral efficiency using time-frequency-code slicing
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US5680234A (en) * 1994-10-20 1997-10-21 Lucent Technologies Inc. Passive optical network with bi-directional optical spectral slicing and loop-back
US5521734A (en) * 1994-12-30 1996-05-28 At&T Corp. One-dimensional optical data arrays implemented within optical networks
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US5710648A (en) * 1995-12-29 1998-01-20 Lucent Technologies Inc. Optical communication system and remote sensor interrogation
US5861966A (en) * 1995-12-27 1999-01-19 Nynex Science & Technology, Inc. Broad band optical fiber telecommunications network
US5880864A (en) * 1996-05-30 1999-03-09 Bell Atlantic Network Services, Inc. Advanced optical fiber communications network
US5808767A (en) * 1996-05-30 1998-09-15 Bell Atlantic Network Services, Inc Fiber optic network with wavelength-division-multiplexed transmission to customer premises
US6137608A (en) * 1998-01-30 2000-10-24 Lucent Technologies Inc. Optical network switching system
US6597826B1 (en) 1999-11-02 2003-07-22 Xros, Inc. Optical cross-connect switching system with bridging, test access and redundancy
US6650803B1 (en) 1999-11-02 2003-11-18 Xros, Inc. Method and apparatus for optical to electrical to optical conversion in an optical cross-connect switch
US6571030B1 (en) 1999-11-02 2003-05-27 Xros, Inc. Optical cross-connect switching system
US6792174B1 (en) 1999-11-02 2004-09-14 Nortel Networks Limited Method and apparatus for signaling between an optical cross-connect switch and attached network equipment
US6882765B1 (en) 1999-11-02 2005-04-19 Xros, Inc. Connection protection between clients and optical cross-connect switches
US7146103B2 (en) * 1999-12-29 2006-12-05 Forster Energy Llc Optical communications using multiplexed single sideband transmission and heterodyne detection
US7447436B2 (en) * 1999-12-29 2008-11-04 Forster Energy Llc Optical communications using multiplexed single sideband transmission and heterodyne detection
US7209660B1 (en) * 1999-12-29 2007-04-24 Forster Energy Llc Optical communications using heterodyne detection
GB2361057B (en) * 2000-04-06 2002-06-26 Marconi Comm Ltd Optical signal monitor
US6407846B1 (en) 2001-03-16 2002-06-18 All Optical Networks, Inc. Photonic wavelength shifting method
US6865345B2 (en) * 2001-08-28 2005-03-08 Agilent Technologies, Inc. Frequency translating devices and frequency translating measurement systems that utilize light-activated resistors
JP4531740B2 (ja) * 2006-12-15 2010-08-25 富士通株式会社 コヒーレント光受信機
JP5034770B2 (ja) * 2007-08-16 2012-09-26 富士通株式会社 コヒーレント光受信器および光通信システム
KR20090087805A (ko) * 2008-02-13 2009-08-18 주식회사 케이티 Ｗｄｍ-ｐｏｎ에서의 광 검출 장치 및 그 방법
CN102342046A (zh) * 2008-12-30 2012-02-01 诺基亚西门子通信公司 用于在点对多点网络中发送信号的方法和装置
US9100139B2 (en) * 2012-04-30 2015-08-04 Juniper Networks, Inc. Optical communication link employing coherent detection and out of band channel identification
US10014955B1 (en) * 2015-04-24 2018-07-03 Vencore Labs, Inc. Signal processing circuit with optical local oscillator signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507064A1 (de) * 1985-02-28 1986-08-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart Optisches nachrichtenuebertragungssystem im teilnehmeranschlussbereich
US4783852A (en) * 1985-09-18 1988-11-08 Siemens Aktiengesellschaft Method and apparatus for acquiring information using a relative phase deviation of the optical signal of a local oscillator of a homodyne receiver
US4701904A (en) * 1985-10-18 1987-10-20 American Telephone And Telegraph Company, At&T Bell Laboratories Optical local area network employing microwave modulation techniques

Also Published As

Publication number Publication date
ATE112657T1 (de) 1994-10-15
CA2057881A1 (en) 1990-11-26
EP0473667B1 (en) 1994-10-05
JPH04505531A (ja) 1992-09-24
US5272556A (en) 1993-12-21
GB8912012D0 (en) 1989-07-12
WO1990014734A1 (en) 1990-11-29
EP0473667A1 (en) 1992-03-11
DE69013151T2 (de) 1995-03-16
DE69013151D1 (de) 1994-11-10
CA2057881C (en) 1998-04-28

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)