GB1461693A - Fibre optic couplers - Google Patents

Fibre optic couplers

Info

Publication number
GB1461693A
GB1461693A GB192074A GB192074A GB1461693A GB 1461693 A GB1461693 A GB 1461693A GB 192074 A GB192074 A GB 192074A GB 192074 A GB192074 A GB 192074A GB 1461693 A GB1461693 A GB 1461693A
Authority
GB
United Kingdom
Prior art keywords
devices
housing
substrate
light
photodiode
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
GB192074A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB192074A priority Critical patent/GB1461693A/en
Publication of GB1461693A publication Critical patent/GB1461693A/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
    • G02B6/24—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
    • 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
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
    • G02B6/4221—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera
    • G02B6/4224—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera using visual alignment markings, e.g. index methods
    • 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
    • G02B6/4246—Bidirectionally operating package structures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

1461693 Mounting opto - semiconductor devices MARCONI CO Ltd 19 March 1974 [15 Jan 1974] 01920/74 Heading H1K [Also in Divisions G1 and G2] A photosensitive and a light emissive semiconductor device are positioned on a carrier which mates with a body member housing a branched light guide so that the devices and the ends of the light guide branches are accurately juxtaposed. A contact pattern (10) is silk screened on to an alumina substrate (12) and a LED and a photodiode are bonded to appropriate pads (14, 16) and connected to other tracks (11, 17) by filaments. The substrate is located in a recess 30 in a housing 22 which is moulded round an optical fibre bundle 24 which is branched into two arms 26, 28 terminating above the devices. The housing is provided with a boss 36 to interrupt the direct light path between the LED and the photodiode. The devices are positioned on the substrate relative to two adjacent reference edges which are located against corresponding reference edges of the recess. The substrate is secured by a transparent adhesive or encapsulant and bores 34 are provided to enable the housing to be secured to a base-plate (not shown) to provide a light-tight enclosure for the devices. Instead of a bundle of fibres a single forked optical fibre may be used. The arrangement is intended for use in a light pen for reading strip codes.
GB192074A 1974-01-15 1974-01-15 Fibre optic couplers Expired GB1461693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB192074A GB1461693A (en) 1974-01-15 1974-01-15 Fibre optic couplers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB192074A GB1461693A (en) 1974-01-15 1974-01-15 Fibre optic couplers

Publications (1)

Publication Number Publication Date
GB1461693A true GB1461693A (en) 1977-01-19

Family

ID=9730347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB192074A Expired GB1461693A (en) 1974-01-15 1974-01-15 Fibre optic couplers

Country Status (1)

Country Link
GB (1) GB1461693A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453555A1 (en) * 1979-04-03 1980-10-31 Nkf Groep Bv ELECTRO-OPTICAL CONNECTION DEVICE
US4968114A (en) * 1982-09-24 1990-11-06 U.S. Philips Corp. Method of manufacturing an optical transmitter or receiver device
EP0645653A2 (en) * 1993-08-27 1995-03-29 Siemens Aktiengesellschaft Combined electrooptic transceiver apparatus for lightguides, in particular for use in a lightguide bus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453555A1 (en) * 1979-04-03 1980-10-31 Nkf Groep Bv ELECTRO-OPTICAL CONNECTION DEVICE
US4968114A (en) * 1982-09-24 1990-11-06 U.S. Philips Corp. Method of manufacturing an optical transmitter or receiver device
EP0645653A2 (en) * 1993-08-27 1995-03-29 Siemens Aktiengesellschaft Combined electrooptic transceiver apparatus for lightguides, in particular for use in a lightguide bus
EP0645653A3 (en) * 1993-08-27 1996-02-07 Siemens Ag Combined electrooptic transceiver apparatus for lightguides, in particular for use in a lightguide bus.

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Legal Events

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