GB1438961A - Optical transmission systems - Google Patents

Optical transmission systems

Info

Publication number
GB1438961A
GB1438961A GB76373A GB76373A GB1438961A GB 1438961 A GB1438961 A GB 1438961A GB 76373 A GB76373 A GB 76373A GB 76373 A GB76373 A GB 76373A GB 1438961 A GB1438961 A GB 1438961A
Authority
GB
United Kingdom
Prior art keywords
fibre
region
light
cladding
jan
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
GB76373A
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Priority to GB76373A priority Critical patent/GB1438961A/en
Publication of GB1438961A publication Critical patent/GB1438961A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
    • 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
    • G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
    • G02B2006/0325—Fluid core or cladding
    • 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
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2852—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

1438961 Light guides BICC Ltd 7 Jan 1974 [5 Jan 1973] 763/73 Heading G2J Light transmitted in a multiplicity of modes along a liquid-cored optical fibre is subdivided by dispersing light from the cladding at one region of the fibre substantially to prevent light passing in the transmission direction from that region along the cladding to a contiguous or adjacent second region of the fibre and heating the second region to reduce the difference in the refractive indices of the core and fibre so that some, but not all, the modes entering the second region pass into the cladding there, and are transmitted to a detector or other light receiver. The method is applicable to fibre bundles, and a separate detector may be provided for each fibre. The heater may be thermostatically controlled.
GB76373A 1973-01-05 1973-01-05 Optical transmission systems Expired GB1438961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB76373A GB1438961A (en) 1973-01-05 1973-01-05 Optical transmission systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB76373A GB1438961A (en) 1973-01-05 1973-01-05 Optical transmission systems

Publications (1)

Publication Number Publication Date
GB1438961A true GB1438961A (en) 1976-06-09

Family

ID=9710100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB76373A Expired GB1438961A (en) 1973-01-05 1973-01-05 Optical transmission systems

Country Status (1)

Country Link
GB (1) GB1438961A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121884A (en) * 1976-10-08 1978-10-24 International Standard Electric Corporation Optical fiber switch
US4270839A (en) * 1979-01-29 1981-06-02 Westinghouse Electric Corp. Directional optical fiber signal tapping assembly
US4373768A (en) * 1980-03-31 1983-02-15 Raychem Corporation Thermostatic fiber optic waveguides
US4417782A (en) 1980-03-31 1983-11-29 Raychem Corporation Fiber optic temperature sensing
US4650003A (en) * 1985-04-10 1987-03-17 Systecon Inc. Light path heat detector
US4753505A (en) * 1982-07-15 1988-06-28 Omron Tateisi Electronics Company Optical thermooptic switch device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121884A (en) * 1976-10-08 1978-10-24 International Standard Electric Corporation Optical fiber switch
US4270839A (en) * 1979-01-29 1981-06-02 Westinghouse Electric Corp. Directional optical fiber signal tapping assembly
US4373768A (en) * 1980-03-31 1983-02-15 Raychem Corporation Thermostatic fiber optic waveguides
US4417782A (en) 1980-03-31 1983-11-29 Raychem Corporation Fiber optic temperature sensing
US4753505A (en) * 1982-07-15 1988-06-28 Omron Tateisi Electronics Company Optical thermooptic switch device
US4650003A (en) * 1985-04-10 1987-03-17 Systecon Inc. Light path heat detector

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Legal Events

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