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GB2220789B - Low coherence optical source - Google Patents

Low coherence optical source

Info

Publication number
GB2220789B
GB2220789B GB8816898A GB8816898A GB2220789B GB 2220789 B GB2220789 B GB 2220789B GB 8816898 A GB8816898 A GB 8816898A GB 8816898 A GB8816898 A GB 8816898A GB 2220789 B GB2220789 B GB 2220789B
Authority
GB
United Kingdom
Prior art keywords
optical source
low coherence
coherence optical
low
source
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 - Lifetime
Application number
GB8816898A
Other versions
GB8816898D0 (en
GB2220789A (en
Inventor
Terry Bricheno
Robert Anthoney Baker
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.)
STC PLC
Nortel Networks Optical Components Ltd
Original Assignee
STC PLC
Northern Telecom Europe 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 STC PLC, Northern Telecom Europe Ltd filed Critical STC PLC
Priority to GB8816898A priority Critical patent/GB2220789B/en
Publication of GB8816898D0 publication Critical patent/GB8816898D0/en
Publication of GB2220789A publication Critical patent/GB2220789A/en
Application granted granted Critical
Publication of GB2220789B publication Critical patent/GB2220789B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01S3/05—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
    • H01S3/06795—Fibre lasers with superfluorescent emission, e.g. amplified spontaneous emission sources for fibre laser gyrometers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • 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
    • H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
    • H01S3/0064—Anti-reflection devices, e.g. optical isolaters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02052—Optical fibres with cladding with or without a coating comprising optical elements other than gratings, e.g. filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29331—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by evanescent wave coupling
    • G02B6/29332—Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
GB8816898A 1988-07-15 1988-07-15 Low coherence optical source Expired - Lifetime GB2220789B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8816898A GB2220789B (en) 1988-07-15 1988-07-15 Low coherence optical source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8816898A GB2220789B (en) 1988-07-15 1988-07-15 Low coherence optical source

Publications (3)

Publication Number Publication Date
GB8816898D0 GB8816898D0 (en) 1988-08-17
GB2220789A GB2220789A (en) 1990-01-17
GB2220789B true GB2220789B (en) 1992-08-26

Family

ID=10640523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8816898A Expired - Lifetime GB2220789B (en) 1988-07-15 1988-07-15 Low coherence optical source

Country Status (1)

Country Link
GB (1) GB2220789B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210808A (en) * 1989-07-17 1993-05-11 Pirelli Cavi S.P.A. Unit for amplifying light signals in optical fiber transmission lines
IT1248821B (en) * 1990-05-25 1995-01-30 Pirelli Cavi Spa FIBER OPTIC TELECOMMUNICATION LINE WITH ACTIVE FIBER OPTICAL AMPLIFIERS WITH REDUCED REFLECTIONS
JPH0373934A (en) * 1989-08-15 1991-03-28 Fujitsu Ltd optical amplifier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1263628A (en) * 1968-11-06 1972-02-16 American Optical Corp Improvements in or relating to laser devices
GB1272234A (en) * 1968-10-22 1972-04-26 Nippon Selfoc Company Ltd An optical image intensifier
GB1408318A (en) * 1971-12-13 1975-10-01 Western Electric Co Raman-effect devices
EP0179320A2 (en) * 1984-10-22 1986-04-30 Polaroid Corporation Super radiant light source
GB2180392A (en) * 1985-08-13 1987-03-25 Robert Joseph Mears Fibre optic lasers and amplifiers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1272234A (en) * 1968-10-22 1972-04-26 Nippon Selfoc Company Ltd An optical image intensifier
GB1263628A (en) * 1968-11-06 1972-02-16 American Optical Corp Improvements in or relating to laser devices
GB1408318A (en) * 1971-12-13 1975-10-01 Western Electric Co Raman-effect devices
EP0179320A2 (en) * 1984-10-22 1986-04-30 Polaroid Corporation Super radiant light source
GB2180392A (en) * 1985-08-13 1987-03-25 Robert Joseph Mears Fibre optic lasers and amplifiers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Electronics Letters Vol. 23 No. 24 19th November 1987 pages 1320 and 1321 *

Also Published As

Publication number Publication date
GB8816898D0 (en) 1988-08-17
GB2220789A (en) 1990-01-17

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Legal Events

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

Effective date: 19930715