ES472356A1 - Tap arrangement for a fibre optic transmission system - Google Patents

Tap arrangement for a fibre optic transmission system

Info

Publication number
ES472356A1
ES472356A1 ES472356A ES472356A ES472356A1 ES 472356 A1 ES472356 A1 ES 472356A1 ES 472356 A ES472356 A ES 472356A ES 472356 A ES472356 A ES 472356A ES 472356 A1 ES472356 A1 ES 472356A1
Authority
ES
Spain
Prior art keywords
transmission system
fibre
cavity
conductive layer
fibre optic
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
ES472356A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES472356A1 publication Critical patent/ES472356A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1326—Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4213—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being polarisation selective optical elements
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4287—Optical modules with tapping or launching means through the surface of the waveguide
    • G02B6/4289—Optical modules with tapping or launching means through the surface of the waveguide by inducing bending, microbending or macrobending, to the light guide
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1313—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 liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4256—Details of housings
    • G02B6/4257—Details of housings having a supporting carrier or a mounting substrate or a mounting plate
    • G02B6/4259—Details of housings having a supporting carrier or a mounting substrate or a mounting plate of the transparent type
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4286—Optical modules with optical power monitoring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Liquid Crystal (AREA)
  • Optical Communication System (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Tapping points are provided at intervals on a continuous transmission fibre (21) of an optical transmission system. Relatively short regions of the transmission fibre core (22) are exposed at these points by removing the optical cladding (23). The exposed core region is provided with a transparent, conductive layer (24). A transparent sleeve (25) is drawn over the whole, and a conductive layer (24) is likewise provided on the internal surface of said sleeve. The cavity (26) produced is filled with liquid-crystal material. An electric field is now applied to this material and influences the refractive index of the liquid crystal. The transmission fibre is "tapped". The quantity of light energy escaping from the fibre core (in accordance with the amplitude of the field applied to the liquid crystal) is detected by a photodetector mounted in the vicinity of the cavity.
ES472356A 1977-08-04 1978-08-04 Tap arrangement for a fibre optic transmission system Expired ES472356A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32743/77A GB1536518A (en) 1977-08-04 1977-08-04 Tap arrangement for a fibre optic transmission system

Publications (1)

Publication Number Publication Date
ES472356A1 true ES472356A1 (en) 1979-04-01

Family

ID=10343351

Family Applications (1)

Application Number Title Priority Date Filing Date
ES472356A Expired ES472356A1 (en) 1977-08-04 1978-08-04 Tap arrangement for a fibre optic transmission system

Country Status (7)

Country Link
AU (1) AU521582B2 (en)
CH (1) CH632597A5 (en)
DE (1) DE2830095A1 (en)
ES (1) ES472356A1 (en)
FR (1) FR2399676A1 (en)
GB (1) GB1536518A (en)
IT (1) IT1118232B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8313484D0 (en) * 1983-05-16 1983-06-22 King L H Optical waveguide
GB8328204D0 (en) * 1983-10-21 1983-11-23 British Telecomm Optical fibres
US4783851A (en) * 1984-01-27 1988-11-08 Yokogawa Electric Corporation Optical communication system
DE3407212A1 (en) * 1984-02-28 1985-09-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Input circuit for optocouplers
US4721352A (en) * 1986-02-26 1988-01-26 The Board Of Trustees Of The Leland Stanford Junior University Polarizing apparatus and method utilizing an optical fiber
GB2188204A (en) * 1986-03-17 1987-09-23 Plessey Co Plc Improvements relating to optical fibre light transmission systems
GB8800972D0 (en) * 1988-01-16 1988-02-17 Oxley Dev Co Ltd Sub-sea cable location indicator
CA2024389C (en) * 1989-09-06 1999-01-26 Yasuo Matsuda Coupler-type optical switch and process for producing the same
FI906095A (en) * 1990-12-12 1992-06-13 Jouko Viitanen FOERFARANDE FOER TRANSMISSION AV VISUALISK INFORMATION.
DE4123489C2 (en) * 1991-07-16 1994-01-27 Zam Ev Device for wired data and energy transmission using light energy
EP1372024A1 (en) * 2002-06-12 2003-12-17 Alcatel Liquid crystal optical phase modulator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575493A (en) * 1969-08-05 1971-04-20 Rca Corp Fast self-quenching of dynamic scattering in liquid crystal devices
DE2301945C2 (en) * 1973-01-16 1982-04-08 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg Receiver for pulsed light signals
US3980396A (en) * 1975-02-25 1976-09-14 Xerox Corporation Liquid crystalline deflection and modulation system
DE2517194A1 (en) * 1975-04-18 1976-10-28 Siemens Ag SPECTRAL SELECTIVE FILTER DEVICE
JPS51136206A (en) * 1975-05-21 1976-11-25 Fujitsu Ltd Automatic light level controlling for light pcm relay
CH607066A5 (en) * 1975-12-05 1978-11-30 Comp Generale Electricite
DE2600893A1 (en) * 1976-01-12 1977-07-21 Siemens Ag LIGHT DISTRIBUTOR FOR OPTICAL MESSAGE SYSTEMS
DE2732806C3 (en) * 1977-07-20 1980-04-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Light signal transmitter between mutually rotatable parts of the apparatus

Also Published As

Publication number Publication date
FR2399676A1 (en) 1979-03-02
IT7826054A0 (en) 1978-07-25
IT1118232B (en) 1986-02-24
DE2830095A1 (en) 1979-02-15
FR2399676B1 (en) 1983-04-08
AU3839078A (en) 1980-01-31
CH632597A5 (en) 1982-10-15
AU521582B2 (en) 1982-04-22
GB1536518A (en) 1978-12-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990201