GB2205174B - Data tranmission network. - Google Patents

Data tranmission network.

Info

Publication number
GB2205174B
GB2205174B GB8806377A GB8806377A GB2205174B GB 2205174 B GB2205174 B GB 2205174B GB 8806377 A GB8806377 A GB 8806377A GB 8806377 A GB8806377 A GB 8806377A GB 2205174 B GB2205174 B GB 2205174B
Authority
GB
United Kingdom
Prior art keywords
network
data tranmission
tranmission
data
tranmission network
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 - Fee Related
Application number
GB8806377A
Other versions
GB8806377D0 (en
GB2205174A (en
Inventor
Dr John Karl Atkinson
Richard Paul Collins
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.)
Honeywell Analytics Ltd
Original Assignee
Sieger Ltd
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 Sieger Ltd filed Critical Sieger Ltd
Publication of GB8806377D0 publication Critical patent/GB8806377D0/en
Publication of GB2205174A publication Critical patent/GB2205174A/en
Application granted granted Critical
Publication of GB2205174B publication Critical patent/GB2205174B/en
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0128—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects
    • G02F1/0131—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence
    • G02F1/0134—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence in optical waveguides
    • 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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • 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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5051—Laser transmitters using external modulation using a series, i.e. cascade, combination of modulators

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
GB8806377A 1987-03-17 1988-03-17 Data tranmission network. Expired - Fee Related GB2205174B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8706272A GB8706272D0 (en) 1987-03-17 1987-03-17 Fibre optic telemetry

Publications (3)

Publication Number Publication Date
GB8806377D0 GB8806377D0 (en) 1988-04-13
GB2205174A GB2205174A (en) 1988-11-30
GB2205174B true GB2205174B (en) 1991-10-23

Family

ID=10614066

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8706272A Pending GB8706272D0 (en) 1987-03-17 1987-03-17 Fibre optic telemetry
GB8806377A Expired - Fee Related GB2205174B (en) 1987-03-17 1988-03-17 Data tranmission network.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8706272A Pending GB8706272D0 (en) 1987-03-17 1987-03-17 Fibre optic telemetry

Country Status (1)

Country Link
GB (2) GB8706272D0 (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 (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB0322859D0 (en) 2003-09-30 2003-10-29 British Telecomm Communication
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
US7848645B2 (en) 2004-09-30 2010-12-07 British Telecommunications Public Limited Company Identifying or locating waveguides
GB0427733D0 (en) 2004-12-17 2005-01-19 British Telecomm Optical system
ATE498954T1 (en) 2004-12-17 2011-03-15 British Telecomm NETWORK ASSESSMENT
GB0504579D0 (en) 2005-03-04 2005-04-13 British Telecomm Communications system
EP1853964B1 (en) 2005-03-04 2009-06-24 British Telecommunications Public Limited Company Acousto-optical modulator arrangement
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
EP1987317B1 (en) 2006-02-24 2013-07-17 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
EP1826924A1 (en) 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
DE602007013874D1 (en) 2006-02-24 2011-05-26 British Telecomm DETECTING A FAULT
CN101410696B (en) 2006-04-03 2011-01-05 英国电讯有限公司 Evaluating the position of a disturbance
GB2462876A (en) * 2008-08-26 2010-03-03 Cambridge Silicon Radio Ltd Estimating the component of a signal via random sampling

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488253A (en) * 1974-12-19 1977-10-12 Davies D Telecommunication system
GB2069799A (en) * 1980-02-15 1981-08-26 Philips Nv Method for the transmission of data packets
EP0069275A1 (en) * 1981-07-02 1983-01-12 Trancom AB Apparatus for communicating with a fleet of vehicles
EP0144190A2 (en) * 1983-11-30 1985-06-12 The Board Of Trustees Of The Leland Stanford Junior University Single mode fiber optic single sideband modulator
EP0153124A2 (en) * 1984-02-17 1985-08-28 The Board Of Trustees Of The Leland Stanford Junior University Acousto-optic frequency shifter
GB2166929A (en) * 1984-11-07 1986-05-14 Gen Electric Co Plc Variable frame length t.d.m. transmission system
EP0183420A2 (en) * 1984-11-13 1986-06-04 The Board Of Trustees Of The Leland Stanford Junior University Optical fiber acousto-optic amplitude modulator
EP0190923A2 (en) * 1985-02-08 1986-08-13 The Board Of Trustees Of The Leland Stanford Junior University Acousto-optic frequency shifter utilizing multi-turn optical fiber
EP0192887A2 (en) * 1985-02-27 1986-09-03 Litton Systems, Inc. Fiber optic phase modulator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488253A (en) * 1974-12-19 1977-10-12 Davies D Telecommunication system
GB2069799A (en) * 1980-02-15 1981-08-26 Philips Nv Method for the transmission of data packets
EP0069275A1 (en) * 1981-07-02 1983-01-12 Trancom AB Apparatus for communicating with a fleet of vehicles
EP0144190A2 (en) * 1983-11-30 1985-06-12 The Board Of Trustees Of The Leland Stanford Junior University Single mode fiber optic single sideband modulator
EP0153124A2 (en) * 1984-02-17 1985-08-28 The Board Of Trustees Of The Leland Stanford Junior University Acousto-optic frequency shifter
GB2166929A (en) * 1984-11-07 1986-05-14 Gen Electric Co Plc Variable frame length t.d.m. transmission system
EP0183420A2 (en) * 1984-11-13 1986-06-04 The Board Of Trustees Of The Leland Stanford Junior University Optical fiber acousto-optic amplitude modulator
EP0190923A2 (en) * 1985-02-08 1986-08-13 The Board Of Trustees Of The Leland Stanford Junior University Acousto-optic frequency shifter utilizing multi-turn optical fiber
EP0192887A2 (en) * 1985-02-27 1986-09-03 Litton Systems, Inc. Fiber optic phase modulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
The Radio and Electronic Engineer Vol 49, No.9 September 1979 pages 460 to 466. *

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
GB8806377D0 (en) 1988-04-13
GB8706272D0 (en) 1987-04-23
GB2205174A (en) 1988-11-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930317