SG68290G - Optical fibre and method for its production - Google Patents

Optical fibre and method for its production

Info

Publication number
SG68290G
SG68290G SG682/90A SG68290A SG68290G SG 68290 G SG68290 G SG 68290G SG 682/90 A SG682/90 A SG 682/90A SG 68290 A SG68290 A SG 68290A SG 68290 G SG68290 G SG 68290G
Authority
SG
Singapore
Prior art keywords
glass
fluorine
coating
particles
rod
Prior art date
Application number
SG682/90A
Other languages
English (en)
Original Assignee
Corning 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
Application filed by Corning Inc filed Critical Corning Inc
Publication of SG68290G publication Critical patent/SG68290G/en

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
    • C03B37/10—Non-chemical treatment
    • C03B37/12—Non-chemical treatment of fibres or filaments during winding up
    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture 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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • 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
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture 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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/12—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/31—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with germanium
    • 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
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • 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
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C03B2203/26—Parabolic or graded index [GRIN] core profile
    • 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
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C03B2203/29—Segmented core fibres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S65/00—Glass manufacturing
    • Y10S65/15—Nonoxygen containing chalogenides
    • Y10S65/16—Optical filament or fiber treatment with fluorine or incorporating fluorine in final product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Optical Integrated Circuits (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Surface Treatment Of Glass (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
SG682/90A 1983-09-26 1990-08-14 Optical fibre and method for its production SG68290G (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/535,786 US4629485A (en) 1983-09-26 1983-09-26 Method of making fluorine doped optical preform and fiber and resultant articles

Publications (1)

Publication Number Publication Date
SG68290G true SG68290G (en) 1990-09-21

Family

ID=24135760

Family Applications (1)

Application Number Title Priority Date Filing Date
SG682/90A SG68290G (en) 1983-09-26 1990-08-14 Optical fibre and method for its production

Country Status (18)

Country Link
US (1) US4629485A (fr)
EP (1) EP0139348B1 (fr)
JP (1) JPS6086049A (fr)
KR (1) KR850002444A (fr)
AT (1) ATE49741T1 (fr)
AU (1) AU566335B2 (fr)
BR (1) BR8402553A (fr)
CA (1) CA1251044A (fr)
DE (1) DE3481118D1 (fr)
DK (1) DK161139C (fr)
ES (1) ES8601491A1 (fr)
FI (1) FI76543C (fr)
HK (1) HK77490A (fr)
IL (1) IL72162A0 (fr)
IN (1) IN163122B (fr)
MX (1) MX161586A (fr)
NO (1) NO161730C (fr)
SG (1) SG68290G (fr)

Families Citing this family (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU569757B2 (en) * 1983-10-19 1988-02-18 Nippon Telegraph & Telephone Corporation Optical fibre preform manufacture
JPS6096545A (ja) * 1983-10-28 1985-05-30 Nippon Telegr & Teleph Corp <Ntt> 光フアイバ
EP0165253B1 (fr) * 1983-12-22 1989-01-11 AT&T Corp. Fabrication d'un article en verre a haute teneur en silice
US5221309A (en) * 1984-05-15 1993-06-22 Sumitomo Electric Industries, Ltd. Method for producing glass preform for optical fiber
JPS60239337A (ja) * 1984-05-15 1985-11-28 Sumitomo Electric Ind Ltd 光フアイバ−用ガラス母材の製造法
JPS60260430A (ja) * 1984-06-04 1985-12-23 Sumitomo Electric Ind Ltd フツ素をクラツド部に含有する光フアイバ用母材の製造方法
JPS60260436A (ja) * 1984-06-08 1985-12-23 Sumitomo Electric Ind Ltd 光フアイバ用ガラス母材の製造方法
JPS6186436A (ja) * 1984-10-05 1986-05-01 Sumitomo Electric Ind Ltd 光フアイバ用母材の製造方法
CA1271316A (fr) * 1984-12-21 1990-07-10 Koichi Abe Fabrication d'un guide d'ondes optiques
US5364428A (en) * 1985-03-18 1994-11-15 Sumitomo Electric Industries, Ltd. Method for producing glass preform for optical fiber
US5203899A (en) * 1985-03-18 1993-04-20 Sumitomo Electric Industries, Ltd. Method for producing glass preform for optical fiber
CA1290942C (fr) * 1985-03-18 1991-10-22 Michihisa Kyoto Methode de fabrication d'elements preformes, en verre, pour la production de fibres optiques
JPS61247633A (ja) * 1985-04-25 1986-11-04 Sumitomo Electric Ind Ltd 光フアイバ−用ガラス母材の製造方法
JPS62275035A (ja) * 1985-05-07 1987-11-30 Sumitomo Electric Ind Ltd 光フアイバ用母材の製造方法
US4620861A (en) * 1985-11-04 1986-11-04 Corning Glass Works Method for making index-profiled optical device
DE3674749D1 (de) * 1985-12-27 1990-11-08 Sumitomo Electric Industries Verfahren zur herstellung eines optischen glasartikels.
US5217516A (en) * 1985-12-27 1993-06-08 Sumitomo Electric Industries, Ltd. Method of making optical glass article
US4741748A (en) * 1986-01-30 1988-05-03 Corning Glass Works Heating oven for preparing optical waveguide fibers
US4950319A (en) * 1986-01-30 1990-08-21 Corning Incorporated Heating oven for preparing optical waveguide fibers
US5028246A (en) * 1986-02-03 1991-07-02 Ensign-Bickford Optical Technologies, Inc. Methods of making optical waveguides
KR900003449B1 (ko) * 1986-06-11 1990-05-19 스미도모덴기고오교오 가부시기가이샤 분산 시프트싱글모우드 광파이버 및 그 제조방법
US4859223A (en) * 1987-06-15 1989-08-22 Hitachi Cable Limited Method of manufacturing polarization-maintaining optical fibers
US4836954A (en) * 1987-12-22 1989-06-06 Corning Glass Works Fluorinated phyllosilicate and method
JPH03131544A (ja) * 1989-06-29 1991-06-05 Sumitomo Electric Ind Ltd 光ファイバ用ガラス母材の加熱炉および製法
US5259856A (en) * 1989-09-06 1993-11-09 Sumitomo Electric Industrial, Ltd. Method of producing glass preform in furnace for heating glass
US5039325A (en) * 1990-01-02 1991-08-13 At&T Bell Laboratories Method for consolidating doped glass using an encapsulating structure
US5076824A (en) * 1990-05-14 1991-12-31 At&T Bell Laboratories Method of making fiber optical preform with pyrolytic coated mandrel
US5318611A (en) * 1992-03-13 1994-06-07 Ensign-Bickford Optical Technologies, Inc. Methods of making optical waveguides and waveguides made thereby
US5356449A (en) * 1993-05-24 1994-10-18 At&T Bell Laboratories Vad process improvements
US5438129A (en) * 1993-09-27 1995-08-01 Becton Dickinson And Company DNA purification by solid phase extraction using partially fluorinated aluminum hydroxide adsorbant
US5559921A (en) * 1994-06-24 1996-09-24 Sumitomo Electric Industries, Ltd. Single mode optical fiber
US5572618A (en) * 1994-07-13 1996-11-05 Lucent Technologies Inc. Optical attenuator
US5917109A (en) 1994-12-20 1999-06-29 Corning Incorporated Method of making optical fiber having depressed index core region
CA2161939A1 (fr) 1994-12-20 1996-06-21 George E. Berkey Procede de fabrication de fibres optiques comportant une zone a indice de refraction reduit
US6474107B1 (en) * 1996-12-02 2002-11-05 Franklin W. Dabby Fluorinating an optical fiber preform in a pure aluminum oxide muffle tube
US6532776B1 (en) 1997-06-27 2003-03-18 Shin-Etsu Chemical Co., Ltd. Method and apparatus for fusing an optical fiber preform
CA2247970A1 (fr) 1997-10-29 1999-04-29 Corning Incorporated Methode pour faire des preformes de guide d'onde optique a coeur segmente
EP1364919B1 (fr) * 1998-11-05 2008-02-13 Shin-Etsu Chemical Co., Ltd. Procédé de fabrication d'une préforme et d'une fibre optique à partir de la préforme
TWI233430B (en) * 2000-01-28 2005-06-01 Shinetsu Chemical Co Method for manufacturing glass base material, glass base material, and optical fiber
US6611647B2 (en) * 2000-12-12 2003-08-26 Corning Incorporated Large effective area optical fiber
US6748768B2 (en) 2000-12-15 2004-06-15 Corning Incorporated Apparatus and method of doping silica with fluorine during laydown
US20020073740A1 (en) * 2000-12-20 2002-06-20 Dawes Steven B. Fluorine doping a soot preform
US6813908B2 (en) * 2000-12-22 2004-11-09 Corning Incorporated Treating an optical fiber preform with carbon monoxide
US6732551B2 (en) 2001-05-04 2004-05-11 Corning Incorporated Method and feedstock for making silica
US6698247B2 (en) 2001-05-04 2004-03-02 Corning Incorporated Method and feedstock for making silica by flame combustion
WO2002098806A1 (fr) * 2001-05-31 2002-12-12 Corning Incorporated Procede de fabrication d'une fibre optique a partir d'une preforme et fibre optique fabriquee conformement audit procede
US6574994B2 (en) 2001-06-18 2003-06-10 Corning Incorporated Method of manufacturing multi-segmented optical fiber and preform
US6843076B2 (en) * 2001-07-30 2005-01-18 Corning Incorporated Single step laydown method of making dry fiber with complex fluorine doped profile
US20030044743A1 (en) * 2001-08-28 2003-03-06 Bookbinder Dana C. Furnace assembly for heating an optical waveguide preform
JP3664174B2 (ja) * 2001-09-19 2005-06-22 松下電器産業株式会社 光導波路およびその製造方法
US20030079504A1 (en) * 2001-10-26 2003-05-01 Boek Heather D. Methods and apparatus for forming a chlorine-doped optical waveguide preform
US8037717B2 (en) * 2001-10-26 2011-10-18 Corning Incorporated Methods and apparatus for pulsed doping or drying a soot preform
US6711332B2 (en) * 2001-11-05 2004-03-23 Corning Incorporated Highly negative-slope dispersion compensating fiber and transmission system including same
US20030097858A1 (en) * 2001-11-26 2003-05-29 Christof Strohhofer Silver sensitized erbium ion doped planar waveguide amplifier
US6813907B2 (en) * 2001-11-30 2004-11-09 Corning Incorporated Fluorine doping a soot preform
US6935050B2 (en) * 2002-12-04 2005-08-30 Corning Incorporated Method and apparatus reducing metal impurities in optical fiber soot preforms
US20040112089A1 (en) * 2002-12-16 2004-06-17 Digiovanni David J. Manufacture of optical fibers using enhanced doping
US20040118155A1 (en) * 2002-12-20 2004-06-24 Brown John T Method of making ultra-dry, Cl-free and F-doped high purity fused silica
US6985662B2 (en) * 2003-10-30 2006-01-10 Corning Incorporated Dispersion compensating fiber for moderate dispersion NZDSF and transmission system utilizing same
US7536076B2 (en) * 2006-06-21 2009-05-19 Corning Incorporated Optical fiber containing alkali metal oxide
US20080050086A1 (en) * 2006-08-24 2008-02-28 Scott Robertson Bickham Optical fiber containing alkali metal oxide
US7844155B2 (en) * 2007-05-07 2010-11-30 Corning Incorporated Optical fiber containing alkali metal oxide
JP2009023898A (ja) * 2007-06-20 2009-02-05 Asahi Glass Co Ltd 合成石英ガラス体、その製造方法、光学素子および光学装置
GB2457947B (en) * 2008-02-29 2012-10-17 Sumitomo Electric Industries All solid photonic bandgap fibre
GB2457946B (en) * 2008-02-29 2011-11-16 Sumitomo Electric Industries Method of manufacturing photonic bandgap fibre
KR20110082131A (ko) * 2008-10-06 2011-07-18 아사히 가라스 가부시키가이샤 합성 석영 유리의 제조 방법
US20100122558A1 (en) * 2008-11-19 2010-05-20 John Michael Jewell Apparatus and Method of Sintering an Optical Fiber Preform
JP4926164B2 (ja) * 2008-12-26 2012-05-09 信越化学工業株式会社 高周波誘導熱プラズマトーチを用いた光ファイバプリフォームの製造方法及び装置
US20110138861A1 (en) * 2009-12-15 2011-06-16 Baker Hughes Incorporated Optical fiber manufacturing method and apparatus
US9873629B2 (en) * 2011-06-30 2018-01-23 Corning Incorporated Methods for producing optical fiber preforms with low index trenches
JP5342614B2 (ja) * 2011-08-09 2013-11-13 古河電気工業株式会社 光ファイバ母材および光ファイバの製造方法
US9975802B2 (en) * 2013-05-31 2018-05-22 Corning Incorporated Method for making low bend loss optical fiber preforms
US11554978B2 (en) 2013-11-27 2023-01-17 Corning Incorporated Method for reducing processing time for optical fiber preforms
WO2016100255A1 (fr) 2014-12-16 2016-06-23 Corning Incorporated Procédé de fabrication d'une préforme de fibre optique et manche destiné à être utilisé dans la fabrication de préforme de fibre optique
DK3359498T3 (da) * 2015-10-09 2021-02-22 Prysmian Spa Fremgangsmåde til fremstilling af en glaskernepræform til optiske fibre
US10520371B2 (en) 2015-10-22 2019-12-31 Applied Materials, Inc. Optical fiber temperature sensors, temperature monitoring apparatus, and manufacturing methods
JP2018016533A (ja) * 2016-07-29 2018-02-01 信越化学工業株式会社 光ファイバ用ガラス母材の製造方法
WO2018093451A2 (fr) 2016-09-21 2018-05-24 Corning Incorporated Fibres optiques à indice de gaine variable et leurs procédés de formation
RU2713011C1 (ru) 2017-08-23 2020-02-03 Чэнду Футун Оптикал Коммьюникейшн Текнолоджис Ко., Лтд. Оптическое волокно и способ его изготовления
WO2020180466A1 (fr) * 2019-03-05 2020-09-10 Corning Incorporated Système et procédés de traitement d'une préforme de fibre optique

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161505A (en) * 1972-11-25 1979-07-17 Sumitomo Electric Industries, Ltd. Process for producing optical transmission fiber
US3933454A (en) * 1974-04-22 1976-01-20 Corning Glass Works Method of making optical waveguides
US4154592A (en) * 1978-02-21 1979-05-15 Corning Glass Works Method of drawing optical filaments
JPS54134721A (en) * 1978-04-11 1979-10-19 Nippon Telegraph & Telephone Manufacture of anhydrous glass parent material for optical fiber
US4263031A (en) * 1978-06-12 1981-04-21 Corning Glass Works Method of producing glass optical filaments
FR2428618A1 (fr) * 1978-06-16 1980-01-11 Telecommunications Sa Procede de fabrication d'une ebauche en vue de la realisation d'un guide de lumiere et ebauche obtenue selon le procede
JPS5521059A (en) * 1978-07-31 1980-02-14 Nippon Telegr & Teleph Corp <Ntt> Optical fiber
JPS6038345B2 (ja) * 1978-11-07 1985-08-31 日本電信電話株式会社 光伝送用ガラス素材の製造方法
JPS55167149A (en) * 1979-06-13 1980-12-26 Nippon Telegr & Teleph Corp <Ntt> Manufacture of anhydrous quartz type fiber base material
JPS5844619B2 (ja) * 1979-09-26 1983-10-04 日本電信電話株式会社 光フアイバ母材の製造法
JPS5858299B2 (ja) * 1980-05-24 1983-12-24 日本電信電話株式会社 低損失光ファイバ用多孔質母材の脱水焼結方法
JPS5767043A (en) * 1980-10-08 1982-04-23 Nippon Telegr & Teleph Corp <Ntt> Manufacture of base material for optical fiber
JPS5767034A (en) * 1980-10-15 1982-04-23 Toshiba Corp Manufacturing apparatus for envelope-shaped flat glass plate
JPS57100933A (en) * 1980-12-12 1982-06-23 Nippon Telegr & Teleph Corp <Ntt> Preparation of base material for optical fiber
FR2496086B1 (fr) * 1980-12-16 1985-07-12 Quartz & Silice Guide d'onde optique a coeur dope au fluor
FR2499546B1 (fr) * 1981-02-11 1986-10-24 Corning Glass Works Verres au germanium ayant une transmission elevee dans l'infra-rouge et une faible densite, et leur fabrication
GB2096351B (en) * 1981-04-08 1985-06-12 British Telecomm Monomode optical fibre
JPS57170831A (en) * 1981-04-13 1982-10-21 Nippon Telegr & Teleph Corp <Ntt> Manufacture of porous base material for optical fluoride fiber
JPS5842136A (ja) * 1981-09-08 1983-03-11 Nec Corp 電子ビ−ム発生装置
DE3203349A1 (de) * 1981-11-28 1983-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und vorrichtung zur herstellung einer optischen glasfaser mit geringem oh -ionengehalt
US4533378A (en) * 1982-05-28 1985-08-06 At&T Technologies, Inc. Modified zirconia induction furnace
DE3230199A1 (de) * 1982-08-13 1984-02-16 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung einer glasfaser mit einem radialen brechzahlprofil
JPS6071536A (ja) * 1984-08-10 1985-04-23 Nippon Telegr & Teleph Corp <Ntt> 低損失光フアイバ用多孔質母材の脱水焼結方法

Also Published As

Publication number Publication date
FI843763A0 (fi) 1984-09-25
DK161139B (da) 1991-06-03
NO161730B (no) 1989-06-12
AU3328684A (en) 1985-04-04
KR850002444A (ko) 1985-05-13
US4629485A (en) 1986-12-16
DK456984D0 (da) 1984-09-25
NO161730C (no) 1989-09-20
DK161139C (da) 1991-11-25
BR8402553A (pt) 1985-04-30
HK77490A (en) 1990-10-05
NO843837L (no) 1985-03-27
FI76543C (fi) 1988-11-10
ATE49741T1 (de) 1990-02-15
EP0139348A1 (fr) 1985-05-02
EP0139348B1 (fr) 1990-01-24
ES534582A0 (es) 1985-11-01
IN163122B (fr) 1988-08-13
IL72162A0 (en) 1984-10-31
DE3481118D1 (de) 1990-03-01
JPS6086049A (ja) 1985-05-15
AU566335B2 (en) 1987-10-15
FI76543B (fi) 1988-07-29
ES8601491A1 (es) 1985-11-01
DK456984A (da) 1985-03-27
FI843763L (fi) 1985-03-27
CA1251044A (fr) 1989-03-14
MX161586A (es) 1990-11-13

Similar Documents

Publication Publication Date Title
SG68290G (en) Optical fibre and method for its production
EP0139532A3 (en) Method for the production of glass preform for optical fibers
YU64781A (en) Process for pyrolytic coating of tin oxide layers doped with a halogene preferably fluorine on glass surfaces
DE3471090D1 (en) Method for production of glass preform for optical fibers
DE3266345D1 (en) Method of forming an optical waveguide fiber
DE2965131D1 (en) Method of plasma depositing a glass, a glass or silica optical fibre preform produced by this method, and method of making a silica optical fibre from this preform
JPS5782137A (en) Manufacture of glass pipe having at least one dope silica layers and manufacture of preform available foroptical fiber production
DK297181A (da) Optisk bloegeleder sodpraeform optiske fibre fremstillet deraf og fremgangsmaade til fremstilling af sodpraeformen
ATE219034T1 (de) Verfahren zum herstellen von vorformen für optische wellenleiter mit einem segmentkern
KR940021444A (ko) 고품질 광섬유의 제조방법
JPS5645848A (en) Method of controlling optical fiber drawing from glass preform
DK157317C (da) Fremgangsmaade til fremstilling af et produkt af glas eller keramik
EP0476537A3 (en) Method of manufacturing silica glass optical waveguide preform
ES8606673A1 (es) Un metodo para fabricar una preforma de fibra optica de vidrio
JPS6127331B2 (fr)
JPS6451347A (en) Production of multilayered film of metal oxide
JPH0559850B2 (fr)
CA1100001A (fr) Traduction non-disponible
RU2173672C2 (ru) Способ изготовления заготовок с составной сердцевиной для оптических волноводов (варианты)
ES8207383A1 (es) Perfeccionamientos introducidos en una lampara de halogenurometalico con revestimiento que refleja calor
JPS56104306A (en) Fiber for optical transmission and its manufacture