[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

GB2012983A - Optical waveguides having non- uniform outer jackets - Google Patents

Optical waveguides having non- uniform outer jackets

Info

Publication number
GB2012983A
GB2012983A GB7901320A GB7901320A GB2012983A GB 2012983 A GB2012983 A GB 2012983A GB 7901320 A GB7901320 A GB 7901320A GB 7901320 A GB7901320 A GB 7901320A GB 2012983 A GB2012983 A GB 2012983A
Authority
GB
United Kingdom
Prior art keywords
cladding
waveguide
optical waveguides
uniform outer
uniform thickness
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.)
Granted
Application number
GB7901320A
Other versions
GB2012983B (en
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority claimed from US05/869,366 external-priority patent/US4179189A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB2012983A publication Critical patent/GB2012983A/en
Application granted granted Critical
Publication of GB2012983B publication Critical patent/GB2012983B/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/105Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/012Manufacture of preforms for drawing fibres or filaments
    • C03B37/01205Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/012Manufacture of preforms for drawing fibres or filaments
    • C03B37/014Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01861Means for changing or stabilising the diameter or form of tubes or rods
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/012Manufacture of preforms for drawing fibres or filaments
    • C03B37/014Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01884Means for supporting, rotating and translating tubes or rods being formed, e.g. lathes
    • C03B37/01892Deposition substrates, e.g. tubes, mandrels
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/02External structure or shape details
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/02External structure or shape details
    • C03B2203/04Polygonal outer cross-section, e.g. triangular, square
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/30Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres

Landscapes

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

Abstract

Orthogonally polarised waves in an optical waveguide are decoupled by providing stress-induced birefringence greater than 5 x 10<-5> in the waveguide. The birefringence is achieved by providing a jacket 33 which is of non uniform thickness which upon cooling exerts a sufficient strain upon the waveguide. A single polarised wave can be supported in such a guide without decoupling. The optical fibre preform shown has a core 31, cladding 32 and outer jacket 33. Optical fibre preforms having an inner core surrounded by a cladding and an outer jacket of non-uniform thickness at least partially surrounding the cladding are prepared. <IMAGE>
GB7901320A 1978-01-13 1979-01-12 Optical waveguides Expired GB2012983B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86936578A 1978-01-13 1978-01-13
US05/869,366 US4179189A (en) 1978-01-13 1978-01-13 Single polarization optical fibers and methods of fabrication

Publications (2)

Publication Number Publication Date
GB2012983A true GB2012983A (en) 1979-08-01
GB2012983B GB2012983B (en) 1982-05-26

Family

ID=27128109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901320A Expired GB2012983B (en) 1978-01-13 1979-01-12 Optical waveguides

Country Status (5)

Country Link
JP (1) JPS54130044A (en)
DE (1) DE2901092A1 (en)
FR (1) FR2417120A1 (en)
GB (1) GB2012983B (en)
NL (1) NL193330C (en)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015533A1 (en) * 1979-03-09 1980-09-17 Siemens Aktiengesellschaft Cleavable optical fibre and method of producing it
FR2451044A1 (en) * 1979-03-06 1980-10-03 Max Planck Gesellschaft TRANSMISSION OPTICAL FILTER
EP0021712A1 (en) * 1979-06-19 1981-01-07 Andrew Corporation Dielectric waveguides and method of propagating polarized electromagnetic waves and communication apparatus and system using such waveguides and method
EP0032390A2 (en) * 1980-01-11 1981-07-22 Hitachi, Ltd. Method of producing a preform rod for an optical fiber
EP0038949A1 (en) * 1980-04-30 1981-11-04 Siemens Aktiengesellschaft Glass-fibre to be used in light guides and method of manufacturing same
EP0045345A1 (en) * 1980-07-31 1982-02-10 Rockwell International Corporation Method of fabrication and resulting birefringent electromagnetic transmission line that preserves the state of polarized radiation propagating therein
EP0054226A1 (en) * 1980-12-16 1982-06-23 Licentia Patent-Verwaltungs-GmbH Waveguide and its manufacturing process
FR2498339A1 (en) * 1981-01-17 1982-07-23 Nippon Telegraph & Telephone IMPROVEMENTS TO MONOMODE OPTICAL FIBERS AND METHOD OF MANUFACTURING SAME
EP0061901A1 (en) * 1981-03-30 1982-10-06 Corning Glass Works Optical waveguide fiber, and methods of forming an optical waveguide fiber, and an optical waveguide preform
EP0067017A1 (en) * 1981-05-29 1982-12-15 Hitachi, Ltd. Polarization plane maintaining optical fiber and fabricating method therefor
FR2511777A1 (en) * 1981-08-19 1983-02-25 Hitachi Cable OPTICAL FIBERS WITH SIMPLE POLARIZATION AND PROCESS FOR PRODUCING THESE FIBERS
FR2512214A1 (en) * 1981-08-27 1983-03-04 Nippon Telegraph & Telephone IMPROVEMENTS TO MONOMODIC OPTICAL FIBERS
GB2122599A (en) * 1982-06-25 1984-01-18 Nat Res Dev Method of making high birefringence optical fibres and preforms
FR2539882A1 (en) * 1983-01-21 1984-07-27 Comp Generale Electricite Method for fabricating an optical fibre capable of transmitting linearly-polarised radiation and optical fibre obtained by this method
US4493530A (en) * 1981-08-18 1985-01-15 Hitachi Cable, Ltd. Single polarization optical fibers
EP0145124A2 (en) * 1983-08-26 1985-06-19 Andrew A.G. Optical fiber polarizer
EP0162303A2 (en) * 1984-04-23 1985-11-27 Polaroid Corporation Polarization locked optical fiber and method
US4578097A (en) * 1983-09-26 1986-03-25 Corning Glass Works Method of forming a polarization preserving optical waveguide
EP0220715A1 (en) * 1985-10-29 1987-05-06 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of manufacturing optical fibres with non-circular core cross-section
US4851025A (en) * 1986-12-03 1989-07-25 Schott Glaswerke Process for producing a planar optical waveguide
US4978377A (en) * 1988-12-09 1990-12-18 Alcatel N.V. Method of assembling a fiber optic preform from discrete preformed elements
EP0413387A1 (en) * 1989-08-16 1991-02-20 Koninklijke Philips Electronics N.V. Polarisation-maintaining single-mode optical fibre
WO2001064593A1 (en) * 2000-02-29 2001-09-07 3M Innovative Properties Company Birefringent optical fibers and methods for making and connecting them
WO2001064592A1 (en) * 2000-02-29 2001-09-07 3M Innovative Properties Company Method for making and connecting v-shaped highly birefringent optical fibers
GB2374159A (en) * 2001-03-22 2002-10-09 Moritex Corp Processed preform for producing elliptic core optical fiber
US6778747B1 (en) 1998-09-09 2004-08-17 Corning Incorporated Radially varying and azimuthally asymmetric optical waveguide fiber
US7437044B2 (en) 2006-12-21 2008-10-14 Weatherford/Lamb, Inc. Pure silica core, high birefringence, single polarization optical waveguide
US7724422B2 (en) 2004-01-30 2010-05-25 Nufern Method and apparatus for providing light having a selected polarization with an optical fiber

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184859A (en) * 1978-06-09 1980-01-22 International Telephone And Telegraph Corporation Method of fabricating an elliptical core single mode fiber
JPS5624306A (en) * 1979-08-03 1981-03-07 Sumitomo Electric Ind Ltd Production of optical fiber having elliptical core
JPS5627104A (en) * 1979-08-13 1981-03-16 Sumitomo Electric Ind Ltd Construction of optical fiber
JPS5737305A (en) * 1980-08-18 1982-03-01 Hitachi Ltd Polarization plane preserving optical fiber
JPS5699306A (en) * 1980-01-11 1981-08-10 Hitachi Ltd Single mode optical fiber which preserves plane of polarization
NL8004960A (en) 1980-08-30 1982-04-01 Philips Nv METHOD FOR MANUFACTURING AN OPTICAL CORE FIBER WITH A CIRCULAR SECTION AND SECTIONAL CROWN FOR USE IN THIS PROCESS.
DE3035153A1 (en) * 1980-09-18 1982-04-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Optical fibre linear polarisation stabilisation - uses press applied radially to outside of optical fibre from opposite sides
US4360371A (en) 1981-03-30 1982-11-23 Corning Glass Works Method of making polarization retaining single-mode optical waveguide
US4415230A (en) * 1981-03-30 1983-11-15 Corning Glass Works Polarization retaining single-mode optical waveguide
JPS57185410A (en) * 1981-05-11 1982-11-15 Kokusai Denshin Denwa Co Ltd <Kdd> Optical coupler
JPS5869737A (en) * 1981-10-21 1983-04-26 Fujikura Ltd Preparation of base material for optical fiber
DE3149616A1 (en) * 1981-12-15 1983-07-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Optical depolariser
JPS58155612A (en) * 1982-03-11 1983-09-16 株式会社東芝 Vacuum breaker
JPS58224306A (en) * 1982-06-23 1983-12-26 Hitachi Cable Ltd Optical fiber for maintaining plane of polarization
JPS594502U (en) * 1982-06-30 1984-01-12 古河電気工業株式会社 single polarization optical fiber
FR2551883B1 (en) * 1983-09-13 1986-01-24 Thomson Csf METHOD FOR MANUFACTURING A SINGLE-MODE OPTICAL FIBER HOLDING LINEAR POLARIZATION
JPH0644088B2 (en) * 1985-05-22 1994-06-08 株式会社日立製作所 Polarization-maintaining optical fiber
JPS6187109A (en) * 1985-07-10 1986-05-02 Hitachi Ltd Optical fiber maintaining plate of polarization
JPH046010Y2 (en) * 1986-06-25 1992-02-19
JPH0662310B2 (en) * 1987-12-07 1994-08-17 日立電線株式会社 Method of manufacturing elliptical core type polarization-maintaining optical fiber
US5056888A (en) * 1989-07-17 1991-10-15 Minnesota Mining And Manufacturing Company Single-mode, single-polarization optical fiber
DE19535526C1 (en) * 1995-09-25 1997-04-03 Hannover Laser Zentrum Double core fiber laser
JPH08233583A (en) * 1995-12-11 1996-09-13 Hitachi Ltd Optical fiber coil
JP4956108B2 (en) * 2006-09-19 2012-06-20 株式会社クボタ Harvesting device
CN108474904B (en) * 2016-01-20 2021-07-06 奇跃公司 Polarization maintaining optical fiber in virtual/augmented reality system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419786B2 (en) * 1974-04-24 1979-09-06 Jenaer Glaswerk Schott & Gen., 6500 Mainz Light guide
GB1514477A (en) * 1974-09-24 1978-06-14 Post Office Optical devices
US4339173A (en) * 1975-09-08 1982-07-13 Corning Glass Works Optical waveguide containing P2 O5 and GeO2
GB1568521A (en) * 1976-04-06 1980-05-29 Standard Telephones Cables Ltd Optical fibre manufacture

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451044A1 (en) * 1979-03-06 1980-10-03 Max Planck Gesellschaft TRANSMISSION OPTICAL FILTER
EP0015533A1 (en) * 1979-03-09 1980-09-17 Siemens Aktiengesellschaft Cleavable optical fibre and method of producing it
EP0021712A1 (en) * 1979-06-19 1981-01-07 Andrew Corporation Dielectric waveguides and method of propagating polarized electromagnetic waves and communication apparatus and system using such waveguides and method
EP0109604A1 (en) * 1980-01-11 1984-05-30 Hitachi, Ltd. Polarised plane-maintaining optical fiber
EP0032390A2 (en) * 1980-01-11 1981-07-22 Hitachi, Ltd. Method of producing a preform rod for an optical fiber
EP0032390A3 (en) * 1980-01-11 1982-03-24 Hitachi, Ltd. Optical fiber and method of producing the same
EP0038949A1 (en) * 1980-04-30 1981-11-04 Siemens Aktiengesellschaft Glass-fibre to be used in light guides and method of manufacturing same
EP0045345A1 (en) * 1980-07-31 1982-02-10 Rockwell International Corporation Method of fabrication and resulting birefringent electromagnetic transmission line that preserves the state of polarized radiation propagating therein
EP0054226A1 (en) * 1980-12-16 1982-06-23 Licentia Patent-Verwaltungs-GmbH Waveguide and its manufacturing process
FR2498339A1 (en) * 1981-01-17 1982-07-23 Nippon Telegraph & Telephone IMPROVEMENTS TO MONOMODE OPTICAL FIBERS AND METHOD OF MANUFACTURING SAME
NL8200149A (en) * 1981-01-17 1982-08-16 Nippon Telegraph & Telephone OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME
EP0061901A1 (en) * 1981-03-30 1982-10-06 Corning Glass Works Optical waveguide fiber, and methods of forming an optical waveguide fiber, and an optical waveguide preform
EP0067017A1 (en) * 1981-05-29 1982-12-15 Hitachi, Ltd. Polarization plane maintaining optical fiber and fabricating method therefor
US4828592A (en) * 1981-05-29 1989-05-09 Hitachi, Ltd. Polarization plane maintaining optical fiber fabricating method
US4493530A (en) * 1981-08-18 1985-01-15 Hitachi Cable, Ltd. Single polarization optical fibers
FR2511777A1 (en) * 1981-08-19 1983-02-25 Hitachi Cable OPTICAL FIBERS WITH SIMPLE POLARIZATION AND PROCESS FOR PRODUCING THESE FIBERS
FR2512214A1 (en) * 1981-08-27 1983-03-04 Nippon Telegraph & Telephone IMPROVEMENTS TO MONOMODIC OPTICAL FIBERS
GB2122599A (en) * 1982-06-25 1984-01-18 Nat Res Dev Method of making high birefringence optical fibres and preforms
FR2539882A1 (en) * 1983-01-21 1984-07-27 Comp Generale Electricite Method for fabricating an optical fibre capable of transmitting linearly-polarised radiation and optical fibre obtained by this method
EP0145124A2 (en) * 1983-08-26 1985-06-19 Andrew A.G. Optical fiber polarizer
EP0145124A3 (en) * 1983-08-26 1987-04-22 Andrew A.G. Optical fiber polarizer
US4578097A (en) * 1983-09-26 1986-03-25 Corning Glass Works Method of forming a polarization preserving optical waveguide
EP0162303A3 (en) * 1984-04-23 1987-12-16 Polaroid Corporation Polarization locked optical fiber and method
EP0162303A2 (en) * 1984-04-23 1985-11-27 Polaroid Corporation Polarization locked optical fiber and method
EP0220715A1 (en) * 1985-10-29 1987-05-06 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of manufacturing optical fibres with non-circular core cross-section
US4740225A (en) * 1985-10-29 1988-04-26 Cselt-Centro Studi E Laboratori Telecomunicazioni Spa Method of producing optical fibers with noncircular core
US4851025A (en) * 1986-12-03 1989-07-25 Schott Glaswerke Process for producing a planar optical waveguide
US4978377A (en) * 1988-12-09 1990-12-18 Alcatel N.V. Method of assembling a fiber optic preform from discrete preformed elements
EP0413387A1 (en) * 1989-08-16 1991-02-20 Koninklijke Philips Electronics N.V. Polarisation-maintaining single-mode optical fibre
US6778747B1 (en) 1998-09-09 2004-08-17 Corning Incorporated Radially varying and azimuthally asymmetric optical waveguide fiber
WO2001064593A1 (en) * 2000-02-29 2001-09-07 3M Innovative Properties Company Birefringent optical fibers and methods for making and connecting them
WO2001064592A1 (en) * 2000-02-29 2001-09-07 3M Innovative Properties Company Method for making and connecting v-shaped highly birefringent optical fibers
US6459838B1 (en) 2000-02-29 2002-10-01 3M Innovative Properties Company Method for making V-shaped highly birefringent optical fibers
US6580860B1 (en) 2000-02-29 2003-06-17 3M Innovative Properties Company Method for making shaped highly birefringent optical fibers
GB2374159A (en) * 2001-03-22 2002-10-09 Moritex Corp Processed preform for producing elliptic core optical fiber
US6948340B2 (en) * 2001-03-22 2005-09-27 Moritex Corporation Method of producing an elliptic core optical fiber
US7724422B2 (en) 2004-01-30 2010-05-25 Nufern Method and apparatus for providing light having a selected polarization with an optical fiber
US7437044B2 (en) 2006-12-21 2008-10-14 Weatherford/Lamb, Inc. Pure silica core, high birefringence, single polarization optical waveguide
US7907807B2 (en) 2006-12-21 2011-03-15 Weatherford/Lamb, Inc. Pure silica core, high birefringence, single polarization optical waveguide

Also Published As

Publication number Publication date
DE2901092C2 (en) 1992-01-02
NL7900179A (en) 1979-07-17
JPS54130044A (en) 1979-10-09
FR2417120B1 (en) 1983-12-30
FR2417120A1 (en) 1979-09-07
GB2012983B (en) 1982-05-26
NL193330B (en) 1999-02-01
JPH0343602B2 (en) 1991-07-03
NL193330C (en) 1999-06-02
DE2901092A1 (en) 1979-07-19

Similar Documents

Publication Publication Date Title
GB2012983A (en) Optical waveguides having non- uniform outer jackets
ES8302919A1 (en) Optical waveguide fiber, and methods of forming an optical waveguide fiber, and an optical waveguide preform.
JPS5727203A (en) Optical fiber waveguide
CA2008451A1 (en) Polarization-maintaining optical fiber
DE3062724D1 (en) Process for making a tension resistant lightguide
EP0045345A1 (en) Method of fabrication and resulting birefringent electromagnetic transmission line that preserves the state of polarized radiation propagating therein
NO841986L (en) SINGLE-MODE TYPE-MODE OPTICAL WAVE GUIDE WITH LOW DISTRIBUTION AND LOW LOSS
JPS57123836A (en) Preparation optical fiber having single mode of internal stress and double refraction
DE3261900D1 (en) Production of optical fibres
ES8308641A1 (en) Low dispersion, low-loss single-mode optical waveguide.
JPS56121003A (en) Single-mode transmitting optical fiber and its manufacture
EP0236881A3 (en) Light wave guide with core cladding structure
GB2096788B (en) Single-polarization single-mode optical fibers
Hanaizumi et al. Fabrication of an expanded core fiber having MFD of 40/spl mu/m preserving outer diameter
JPS5737305A (en) Polarization plane preserving optical fiber
Arnaud Comments on" Radiation from Curved Dielectric Slabs and Fibers"
JPS557790A (en) Optical fiber connector
JPS6022325B2 (en) Internally stressed low loss single polarization optical fiber
Feth Polarizing Optical Fiber With Absorbing Jacket
JPS5818605A (en) Manufacture of single polarized wave holding optical fiber
JPS5694307A (en) Production of multicore fiber
JPS5647002A (en) Photodirectional coupler
JPS5636611A (en) Production of optical fiber
JPS569706A (en) Optical transmission line of aggregate type
FI891529A (en) CABLE OVER FABRIC FOR FRAMSTAELLNING AV EN KABELKAERNA.

Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990111