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GB8612422D0 - Fibre optic communication systems - Google Patents

Fibre optic communication systems

Info

Publication number
GB8612422D0
GB8612422D0 GB868612422A GB8612422A GB8612422D0 GB 8612422 D0 GB8612422 D0 GB 8612422D0 GB 868612422 A GB868612422 A GB 868612422A GB 8612422 A GB8612422 A GB 8612422A GB 8612422 D0 GB8612422 D0 GB 8612422D0
Authority
GB
United Kingdom
Prior art keywords
communication systems
fibre optic
optic communication
fibre
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.)
Withdrawn
Application number
GB868612422A
Other versions
GB2175766A (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.)
PA Consulting Services Ltd
Original Assignee
PA Consulting Services 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 PA Consulting Services Ltd filed Critical PA Consulting Services Ltd
Publication of GB8612422D0 publication Critical patent/GB8612422D0/en
Publication of GB2175766A publication Critical patent/GB2175766A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
    • H01S3/0933—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of a semiconductor, e.g. light emitting diode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
GB08612422A 1985-05-22 1986-05-22 Fibre optic communication systems Withdrawn GB2175766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858512980A GB8512980D0 (en) 1985-05-22 1985-05-22 Fibre optic transmissions systems

Publications (2)

Publication Number Publication Date
GB8612422D0 true GB8612422D0 (en) 1986-07-02
GB2175766A GB2175766A (en) 1986-12-03

Family

ID=10579535

Family Applications (3)

Application Number Title Priority Date Filing Date
GB858512980A Pending GB8512980D0 (en) 1985-05-22 1985-05-22 Fibre optic transmissions systems
GB868612164A Pending GB8612164D0 (en) 1985-05-22 1986-05-19 Fibre optic communication systems
GB08612422A Withdrawn GB2175766A (en) 1985-05-22 1986-05-22 Fibre optic communication systems

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB858512980A Pending GB8512980D0 (en) 1985-05-22 1985-05-22 Fibre optic transmissions systems
GB868612164A Pending GB8612164D0 (en) 1985-05-22 1986-05-19 Fibre optic communication systems

Country Status (3)

Country Link
EP (1) EP0222866A1 (en)
GB (3) GB8512980D0 (en)
WO (1) WO1986007221A1 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5282079A (en) * 1988-06-10 1994-01-25 Pirelli General Plc Optical fibre amplifier
WO1990000320A1 (en) * 1988-07-04 1990-01-11 Phased Array Lasers Pty Ltd Face pumped, looped fibre bundle, phased-array laser oscillator
AU629844B2 (en) * 1988-07-04 1992-10-15 Phased Array Lasers Pty. Ltd. End pumped, looped fibre bundle, phased array laser oscillator/amplifier
GB2231169A (en) * 1989-04-27 1990-11-07 Stc Plc Optical fibres
GB2231168A (en) * 1989-04-27 1990-11-07 Stc Plc Optical fibres
AU5839290A (en) * 1989-06-22 1991-01-08 British Telecommunications Public Limited Company Optical time domain reflectometry
CA2019253C (en) * 1989-06-23 1994-01-11 Shinya Inagaki Optical fiber amplifier
CA2063606C (en) * 1989-07-13 1997-07-15 Peter Healey Optical communications network
IT1231208B (en) * 1989-07-17 1991-11-23 Pirelli Cavi Spa UNIT FOR THE AMPLIFICATION OF LIGHT SIGNALS IN FIBER OPTIC TRANSMISSION LINES.
US5204923A (en) * 1989-07-17 1993-04-20 Pirelli Cavi S.P.A. Unit for amplifying light signals in optical fiber transmission lines
KR940001043B1 (en) * 1989-07-20 1994-02-08 스미도모덴기고오교오 가부시기가이샤 Fiber optic amplifier
GB8919799D0 (en) * 1989-09-01 1989-10-18 British Telecomm Optical coupler
WO1991005380A1 (en) * 1989-09-26 1991-04-18 Australian Electro Optics Pty. Ltd. Folded bundle, laser fibre, phase-locked laser oscillator
US5058974A (en) * 1989-10-06 1991-10-22 At&T Bell Laboratories Distributed amplification for lightwave transmission system
GB8928237D0 (en) * 1989-12-14 1990-02-21 British Telecomm Lossless optical component
ATE123568T1 (en) * 1990-02-15 1995-06-15 British Telecomm OPTICAL TEST APPARATUS WITH AN OTDR.
USRE35697E (en) * 1990-07-16 1997-12-23 Pirelli Cavi S.P.A. Unit for amplifying light signals in optical fiber transmission lines
GB2249660B (en) * 1990-11-09 1994-07-06 Stc Plc Amplified optical fibre systems
DE4038503C2 (en) * 1990-12-03 1997-04-17 Kommunikations Elektronik Network for the transmission of optical information signals
US5082343A (en) * 1990-12-20 1992-01-21 At&T Bell Laboratories Isolated optical coupler
DE69222912T2 (en) * 1991-08-29 1998-04-09 Nippon Electric Co Light receiving module
JP2808972B2 (en) * 1992-02-27 1998-10-08 日本電気株式会社 Optical amplifier
JP3284507B2 (en) * 1993-06-28 2002-05-20 富士通株式会社 Optical transmitting device and optical amplifying device for optical communication system
JPH08304664A (en) * 1995-05-09 1996-11-22 Furukawa Electric Co Ltd:The Wavelength demultiplexing element
DE19517952A1 (en) * 1995-05-16 1996-11-21 Ams Optotech Vertrieb Gmbh Optical amplifier with praseodymium-doped optical fiber
JPH10301492A (en) 1997-04-23 1998-11-13 Sony Corp Enciphering device and method therefor, decoding device and method therefor, and information processing device and method therefor
FR2769992B1 (en) * 1997-10-21 2000-01-28 Thomson Csf POLARIZATION MODULATED OPTICAL DEVICE FOR MEASURING DISTANCE AND / OR OBJECT SPEED

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1344970A (en) * 1961-10-27 1963-12-06 American Optical Corp Light energy generators and amplifiers
US3571737A (en) * 1968-06-07 1971-03-23 Bell Telephone Labor Inc Transmission line
SE358775B (en) * 1968-07-06 1973-08-06 Nippon Selfoc Co Ltd
US3950707A (en) * 1973-04-13 1976-04-13 Canadian Patents And Development Limited Quantum amplifier having passive core and active cladding providing signal gain by interaction of evanescent-wave components of signal and pump beams propagating along the core

Also Published As

Publication number Publication date
EP0222866A1 (en) 1987-05-27
GB8512980D0 (en) 1985-06-26
GB2175766A (en) 1986-12-03
WO1986007221A1 (en) 1986-12-04
GB8612164D0 (en) 1986-06-25

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)