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GB1252732A - - Google Patents

Info

Publication number
GB1252732A
GB1252732A GB1252732DA GB1252732A GB 1252732 A GB1252732 A GB 1252732A GB 1252732D A GB1252732D A GB 1252732DA GB 1252732 A GB1252732 A GB 1252732A
Authority
GB
United Kingdom
Prior art keywords
diameter
light
tube
waveguide
capillary
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
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 filed Critical
Publication of GB1252732A publication Critical patent/GB1252732A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
    • 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
    • G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated 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
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203—Optical features
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/02—External structure or shape details
    • C03B2203/06—Axial perturbations, e.g. twist, by torsion, undulating, crimped
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/18—Axial perturbations, e.g. in refractive index or composition

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

1,252,732. Optical waveguides. POST OFFICE. Nov.7, 1968 [Nov.8, 1967], No.50920/67. Heading G2J. [Also in Division C1] A device for launching light into an optical waveguide, at a frequency to allow propagation of the HE 11 made only, consists of a capillary tube into which is inserted a glass rod of slightly smaller diameter, the tube being heated along its middle and drawn out by pulling at each end of the tube until the external diameter of the composite rod is slightly smaller than the original capillary bore, breaking off the taper and introducing this rod into a further capillary and extruding this in the same manner, and repeating the process until the external diameter is about 1/10 th of the original bore diameter, the waveguide so formed having a maximum diameter of 50 times that of the free space wavelength of the light, a minimum diameter approximately equal to such wavelength and a length about 5 x 10<SP>4</SP> times the free space wavelength. The cladding 2 and core 1 of the finished waveguide launching device taper at a constant rate from the largest end whose face 4 is polished, to the smallest end-face 5 which is connected to the guide into which the light is to be launched.
GB1252732D 1967-11-08 1967-11-08 Expired GB1252732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5092067 1967-11-08

Publications (1)

Publication Number Publication Date
GB1252732A true GB1252732A (en) 1971-11-10

Family

ID=10457934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252732D Expired GB1252732A (en) 1967-11-08 1967-11-08

Country Status (4)

Country Link
DE (1) DE1807574C3 (en)
FR (1) FR1591681A (en)
GB (1) GB1252732A (en)
NL (1) NL6815883A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120293A (en) * 1976-09-17 1978-10-17 A. Ward Ford Memorial Institute, Inc. Laser system and method
US4521070A (en) * 1981-03-24 1985-06-04 Consiglio Nazionale Delle Ricerche High power laser radiation conveying device utilizing variable section fiber optics

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779628A (en) * 1972-03-30 1973-12-18 Corning Glass Works Optical waveguide light source coupler
US3774987A (en) * 1972-06-27 1973-11-27 Bell Electric Research Ltd Coupling of lasers to optical fibres
FR2301023A1 (en) * 1975-02-14 1976-09-10 Cit Alcatel Light waveguide with two or more fibres - is connected by truncated cone arrangement and with liquid included between fibre faces
GB1448080A (en) * 1975-04-10 1976-09-02 Standard Telephones Cables Ltd Optical fibre transducer
DE3524927A1 (en) * 1985-07-12 1987-01-22 Kernforschungsanlage Juelich Light pipe for producing or photometrically measuring exceptionally small points of light
US4763976A (en) * 1987-05-21 1988-08-16 Corning Glass Works Connector employing mode field modification

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120293A (en) * 1976-09-17 1978-10-17 A. Ward Ford Memorial Institute, Inc. Laser system and method
US4521070A (en) * 1981-03-24 1985-06-04 Consiglio Nazionale Delle Ricerche High power laser radiation conveying device utilizing variable section fiber optics

Also Published As

Publication number Publication date
DE1807574C3 (en) 1973-11-22
NL6815883A (en) 1969-05-12
DE1807574B2 (en) 1973-05-03
FR1591681A (en) 1970-05-04
DE1807574A1 (en) 1969-07-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees