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GB2019561B - Telecommunication systems - Google Patents

Telecommunication systems

Info

Publication number
GB2019561B
GB2019561B GB7913001A GB7913001A GB2019561B GB 2019561 B GB2019561 B GB 2019561B GB 7913001 A GB7913001 A GB 7913001A GB 7913001 A GB7913001 A GB 7913001A GB 2019561 B GB2019561 B GB 2019561B
Authority
GB
United Kingdom
Prior art keywords
telecommunication systems
telecommunication
systems
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.)
Expired
Application number
GB7913001A
Other versions
GB2019561A (en
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.)
Kingsley S A
Original Assignee
Kingsley S A
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 Kingsley S A filed Critical Kingsley S A
Priority to GB7913001A priority Critical patent/GB2019561B/en
Publication of GB2019561A publication Critical patent/GB2019561A/en
Application granted granted Critical
Publication of GB2019561B publication Critical patent/GB2019561B/en
Expired 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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/691—Arrangements for optimizing the photodetector in the receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
GB7913001A 1978-04-20 1979-04-12 Telecommunication systems Expired GB2019561B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7913001A GB2019561B (en) 1978-04-20 1979-04-12 Telecommunication systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1567278 1978-04-20
GB7913001A GB2019561B (en) 1978-04-20 1979-04-12 Telecommunication systems

Publications (2)

Publication Number Publication Date
GB2019561A GB2019561A (en) 1979-10-31
GB2019561B true GB2019561B (en) 1982-09-02

Family

ID=26251464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7913001A Expired GB2019561B (en) 1978-04-20 1979-04-12 Telecommunication systems

Country Status (1)

Country Link
GB (1) GB2019561B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974182B2 (en) 2004-03-31 2011-07-05 British Telecommunications Public Limited Company Evaluating the position of a disturbance

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3165562D1 (en) * 1980-09-08 1984-09-20 Bicc Plc Telecommunication systems
ATE34055T1 (en) * 1981-09-11 1988-05-15 Feller Ag ONE OPTICAL FIBER SWITCHING DEVICE.
GB2115183B (en) * 1982-01-22 1985-10-09 Marconi Co Ltd Apparatus for controlling the position or movement of a member
GB8525413D0 (en) * 1985-10-15 1985-11-20 Plessey Co Plc Optical communications system
GB2182516A (en) * 1985-11-01 1987-05-13 Stc Plc Optical fibre network
EP0232041B1 (en) * 1986-01-24 1993-03-24 Siemens Plessey Electronic Systems Limited Optical transmission systems using polarization modulation
WO1991015907A2 (en) * 1990-04-09 1991-10-17 Ascom Tech Ag Bit and frame synchronizing unit for an access node in an optical transmission device
EP0606170A3 (en) * 1993-01-07 1996-11-20 Nec Corp Optical transmission system and optical network terminals used therein.
GB2277585B (en) * 1993-04-23 1997-04-16 Focas Ltd Fibre optic sensor
US5440415A (en) * 1993-08-04 1995-08-08 At&T Corp. Optical successive modulation-muliplexing for fiber optical network
GB9418233D0 (en) * 1994-09-09 1994-10-26 Cookson Group Plc Fibre optic sensor
JP3697319B2 (en) * 1996-06-14 2005-09-21 株式会社日立コミュニケーションテクノロジー Optical transmission apparatus and optical network
GB0322859D0 (en) 2003-09-30 2003-10-29 British Telecomm Communication
US7667849B2 (en) 2003-09-30 2010-02-23 British Telecommunications Public Limited Company Optical sensor with interferometer for sensing external physical disturbance of optical communications link
EP1794904A1 (en) 2004-09-30 2007-06-13 British Telecommunications Public Limited Company Identifying or locating waveguides
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
US8045174B2 (en) 2004-12-17 2011-10-25 British Telecommunications Public Limited Company Assessing a network
GB0427733D0 (en) 2004-12-17 2005-01-19 British Telecomm Optical system
WO2006092606A1 (en) 2005-03-04 2006-09-08 British Telecommunications Public Limited Company Acousto-optical modulator arrangement
GB0504579D0 (en) 2005-03-04 2005-04-13 British Telecomm Communications system
EP1708388A1 (en) 2005-03-31 2006-10-04 British Telecommunications Public Limited Company Communicating information
EP1713301A1 (en) 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Method and apparatus for communicating sound over an optical link
EP1729096A1 (en) 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Method and apparatus for determining the position of a disturbance in an optical fibre
GB2433112B (en) * 2005-12-06 2008-07-09 Schlumberger Holdings Borehole telemetry system
WO2007096579A1 (en) 2006-02-24 2007-08-30 British Telecommunications Public Limited Company Sensing a disturbance
ATE505861T1 (en) 2006-02-24 2011-04-15 British Telecomm DETECTING A FAULT
EP1826924A1 (en) 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
EP2002219B1 (en) 2006-04-03 2014-12-03 BRITISH TELECOMMUNICATIONS public limited company Evaluating the position of a disturbance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974182B2 (en) 2004-03-31 2011-07-05 British Telecommunications Public Limited Company Evaluating the position of a disturbance

Also Published As

Publication number Publication date
GB2019561A (en) 1979-10-31

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee