IL72162A0 - Optical fiber and method for its production - Google Patents
Optical fiber and method for its productionInfo
- Publication number
- IL72162A0 IL72162A0 IL72162A IL7216284A IL72162A0 IL 72162 A0 IL72162 A0 IL 72162A0 IL 72162 A IL72162 A IL 72162A IL 7216284 A IL7216284 A IL 7216284A IL 72162 A0 IL72162 A0 IL 72162A0
- Authority
- IL
- Israel
- Prior art keywords
- glass
- fluorine
- coating
- particles
- rod
- Prior art date
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)
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 |
---|---|
IL72162A0 true IL72162A0 (en) | 1984-10-31 |
Family
ID=24135760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL72162A IL72162A0 (en) | 1983-09-26 | 1984-06-19 | Optical fiber 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)
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)
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 |
-
1983
- 1983-09-26 US US06/535,786 patent/US4629485A/en not_active Expired - Lifetime
-
1984
- 1984-05-08 CA CA000453768A patent/CA1251044A/fr not_active Expired
- 1984-05-28 BR BR8402553A patent/BR8402553A/pt not_active IP Right Cessation
- 1984-06-18 IN IN443/MAS/84A patent/IN163122B/en unknown
- 1984-06-19 IL IL72162A patent/IL72162A0/xx unknown
- 1984-06-21 DE DE8484304189T patent/DE3481118D1/de not_active Expired - Lifetime
- 1984-06-21 AT AT84304189T patent/ATE49741T1/de not_active IP Right Cessation
- 1984-06-21 EP EP84304189A patent/EP0139348B1/fr not_active Expired - Lifetime
- 1984-07-24 ES ES534582A patent/ES8601491A1/es not_active Expired
- 1984-09-04 MX MX202617A patent/MX161586A/es unknown
- 1984-09-19 AU AU33286/84A patent/AU566335B2/en not_active Ceased
- 1984-09-21 JP JP59197022A patent/JPS6086049A/ja active Pending
- 1984-09-25 DK DK456984A patent/DK161139C/da not_active IP Right Cessation
- 1984-09-25 NO NO843837A patent/NO161730C/no unknown
- 1984-09-25 KR KR1019840005885A patent/KR850002444A/ko not_active Application Discontinuation
- 1984-09-25 FI FI843763A patent/FI76543C/fi not_active IP Right Cessation
-
1990
- 1990-08-14 SG SG682/90A patent/SG68290G/en unknown
- 1990-09-27 HK HK774/90A patent/HK77490A/xx not_active IP Right Cessation
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 |
DE3481118D1 (de) | 1990-03-01 |
SG68290G (en) | 1990-09-21 |
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 |
---|---|---|
IL72162A0 (en) | Optical fiber and method for its production | |
EP0139532A3 (en) | Method for the production of glass preform for optical fibers | |
DE3471090D1 (en) | Method for production of glass preform for optical fibers | |
EP0542724A3 (fr) | Four pour le chauffage d'une préforme en verre et procédé de fabrication d'une préforme en verre | |
YU64781A (en) | Process for pyrolytic coating of tin oxide layers doped with a halogene preferably fluorine on glass surfaces | |
DE3266345D1 (en) | Method of forming an optical waveguide fiber | |
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 | |
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 | |
JPS6325242A (ja) | 光フアイバ母材の製造方法 | |
JPS56104306A (en) | Fiber for optical transmission and its manufacture | |
JPS57114473A (en) | Method of mounting tube bulb with bulb made of high melting point glass |