BRPI0418783A - processo para produção de uma fibra óptica, pré-forma para produção de uma fibra óptica, fibra óptica e aparelho - Google Patents

processo para produção de uma fibra óptica, pré-forma para produção de uma fibra óptica, fibra óptica e aparelho

Info

Publication number
BRPI0418783A
BRPI0418783A BRPI0418783-0A BRPI0418783A BRPI0418783A BR PI0418783 A BRPI0418783 A BR PI0418783A BR PI0418783 A BRPI0418783 A BR PI0418783A BR PI0418783 A BRPI0418783 A BR PI0418783A
Authority
BR
Brazil
Prior art keywords
optical fiber
preform
primary
overcladding
producing
Prior art date
Application number
BRPI0418783-0A
Other languages
English (en)
Inventor
Carlos Pedrido
Original Assignee
Dotwyler Fiber Optics Sa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34957295&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0418783(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dotwyler Fiber Optics Sa filed Critical Dotwyler Fiber Optics Sa
Publication of BRPI0418783A publication Critical patent/BRPI0418783A/pt
Publication of BRPI0418783B1 publication Critical patent/BRPI0418783B1/pt

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
    • 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
    • C03B37/02736—Means for supporting, rotating or feeding the tubes, rods, fibres or filaments to be drawn, e.g. fibre draw towers, preform alignment, butt-joining preforms or dummy parts during feeding
    • 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
    • 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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • 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
    • C03B37/02754—Solid fibres drawn from hollow preforms
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/08—Sub-atmospheric pressure applied, e.g. vacuum
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/12—Drawing solid optical fibre directly from a hollow preform
    • C03B2205/13—Drawing solid optical fibre directly from a hollow preform from a hollow glass tube containing glass-forming material in particulate form, e.g. to form the core by melting the powder during drawing
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Landscapes

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

Abstract

PROCESSO PARA PRODUçãO DE UMA FIBRA óPTICA, PRé-FORMA PARA PRODUçãO DE UMA FIBRA óPTICA, FIBRA óPTICA E APARELHO. A presente invenção refere-se a um processo para produzir uma fibra óptica compreende as etapas de inserir uma pré-forma de fibra óptica primária (11), tendo um primeiro eixo primário (x1) e uma superfície externa, em um tubo de sobre-revestimento (12), tendo um segundo eixo primário (x2) e uma superfície interna, de modo que as ditas superfície externa (111) e superfície interna (120) definam um espaço interno (15); reter a pré-forma primária (11) em uma posição inserida centralmente dentro do tubo de sobre-revestimento (12), com os ditos primeiro e segundo eixos primários (x1, x2) em alinhamento substancial entre eles; suprir grão de sobre-revestimento (13) ao espaço interno (15), que é limitado na extremidade inferior do tubo de sobre-revestimento (12) por meio de um fechamento (125): gerar uma condição de pressão reduzida dentro do espaço interno (15), que é limitado na extremidade superior do tubo de sobre-revestimento (12) por meio de um limitador (3), que retém a pré-forma de fibra óptica primária (11) e o tubo de sobre-revestimento (12) em posição; e aquecer a pré-forma secundária não processada (1), que consiste na pré-forma primária (11), tubo de sobre-revestimento (12) e grão de sobre-revestimento (13), na sua extremidade inferior a um estado amolecido, e estirar, simultânea ou subseqüentemente uma fibra óptica dela.
BRPI0418783-0B1A 2004-04-27 2004-04-27 processo para produzir uma fibra óptica ou pré-forma secundária para uma fibra óptica e pré-forma secundária BRPI0418783B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2004/000261 WO2005102946A1 (en) 2004-04-27 2004-04-27 Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fibre and apparatus

Publications (2)

Publication Number Publication Date
BRPI0418783A true BRPI0418783A (pt) 2007-10-09
BRPI0418783B1 BRPI0418783B1 (pt) 2013-07-16

Family

ID=34957295

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0418783-0B1A BRPI0418783B1 (pt) 2004-04-27 2004-04-27 processo para produzir uma fibra óptica ou pré-forma secundária para uma fibra óptica e pré-forma secundária
BRPI0510264-2A BRPI0510264B1 (pt) 2004-04-27 2005-02-22 Método de fabricação de uma preforma de fibra fotônica de cristal, preforma de fibra fotônica de cristal e fibra ótica

Family Applications After (1)

Application Number Title Priority Date Filing Date
BRPI0510264-2A BRPI0510264B1 (pt) 2004-04-27 2005-02-22 Método de fabricação de uma preforma de fibra fotônica de cristal, preforma de fibra fotônica de cristal e fibra ótica

Country Status (13)

Country Link
US (1) US8132429B2 (pt)
EP (2) EP1740510B1 (pt)
JP (2) JP5054513B2 (pt)
KR (1) KR101115615B1 (pt)
CN (2) CN1989078B (pt)
AT (1) ATE492519T1 (pt)
BR (2) BRPI0418783B1 (pt)
DE (1) DE602004030720D1 (pt)
DK (1) DK1740510T3 (pt)
ES (2) ES2358883T3 (pt)
PL (2) PL1740510T3 (pt)
PT (1) PT1740510E (pt)
WO (2) WO2005102946A1 (pt)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033142B2 (en) * 2004-04-27 2011-10-11 Silitec Sa Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fiber and apparatus
EP1942083A1 (en) * 2006-12-07 2008-07-09 Datwyler Fiber Optics S.A. Method and apparatus for fabricating a preform for an active optical fiber, active optical fiber and amplifier
US8472770B2 (en) 2007-06-15 2013-06-25 Ofs Fitel, Llc Single mode optical fibers and modular method of making same
US8107784B2 (en) 2007-06-15 2012-01-31 Ofs Fitel, Llc Reduced bend sensitivity and catastrophic bend loss in single mode optical fibers and method of making same
FR2933400B1 (fr) * 2008-07-04 2010-08-20 Saint Gobain Ct Recherches Grains fondus d'oxydes comprenant al, ti, mg et zr et produits ceramiques comportant de tels grains
US8401353B2 (en) * 2008-09-12 2013-03-19 Draka Comteq B.V. Optical fiber cable assembly
US7970247B2 (en) * 2008-09-12 2011-06-28 Draka Comteq B.V. Buffer tubes for mid-span storage
EP2226301A1 (en) * 2009-02-22 2010-09-08 Silitec Fibers SA Method for producing and processing a preform, preform and optical fiber
US8625944B1 (en) 2009-05-13 2014-01-07 Draka Comteq, B.V. Low-shrink reduced-diameter buffer tubes
US8625945B1 (en) 2009-05-13 2014-01-07 Draka Comteq, B.V. Low-shrink reduced-diameter dry buffer tubes
EP2261181A1 (en) 2009-05-21 2010-12-15 Silitec Fibers SA Method for fabricating and processing a preform, preform and optical fiber
EP2261182A1 (en) 2009-05-21 2010-12-15 Silitec Fibers SA Method for fabricating a preform from glass particles
US8925354B2 (en) * 2009-11-04 2015-01-06 Corning Incorporated Methods for forming an overclad portion of an optical fiber from pelletized glass soot
JP5579210B2 (ja) * 2012-02-28 2014-08-27 日本電信電話株式会社 光ファイバ母材の製造方法
FR3011940B1 (fr) 2013-10-16 2017-01-27 Agence Nat Pour La Gestion Des Dechets Radioactifs Fibre optique, procede de fabrication d'une telle fibre optique et dispositif de mesure destine a la detection d'hydrogene equipe d'une telle fibre optique
US11554978B2 (en) 2013-11-27 2023-01-17 Corning Incorporated Method for reducing processing time for optical fiber preforms
WO2016100255A1 (en) 2014-12-16 2016-06-23 Corning Incorporated Method of making an optical fiber preform and handle for use in making of optical fiber preform
US9487428B2 (en) * 2015-03-06 2016-11-08 Ofs Fitel, Llc Easy removal of a thin-walled tube in a powder-in-tube (PIT) process
CN104788014B (zh) * 2015-04-12 2017-11-24 久智光电子材料科技有限公司 一种光纤预制棒制备及光纤拉丝的方法
FR3035229B1 (fr) 2015-04-15 2017-05-05 Agence Nat Pour La Gestion Des Dechets Radioactifs Fibre optique, procede de fabrication d'une telle fibre optique et dispositif de mesure destine a la detection d'hydrogene equipe d'une telle fibre optique
US9995875B2 (en) 2015-07-28 2018-06-12 The Penn State Research Foundation Method and apparatus for producing crystalline cladding and crystalline core optical fibers
TWI788278B (zh) 2015-12-18 2023-01-01 德商何瑞斯廓格拉斯公司 由均質石英玻璃製得之玻璃纖維及預成型品
WO2017103160A1 (de) 2015-12-18 2017-06-22 Heraeus Quarzglas Gmbh & Co. Kg Herstellung von quarzglaskörpern aus siliziumdioxidgranulat
JP6881777B2 (ja) 2015-12-18 2021-06-02 ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー 合成石英ガラス粒の調製
TWI733723B (zh) 2015-12-18 2021-07-21 德商何瑞斯廓格拉斯公司 不透明石英玻璃體的製備
WO2017103123A2 (de) 2015-12-18 2017-06-22 Heraeus Quarzglas Gmbh & Co. Kg Herstellung von quarzglaskörpern mit taupunktkontrolle im schmelzofen
US10730780B2 (en) 2015-12-18 2020-08-04 Heraeus Quarzglas Gmbh & Co. Kg Preparation of a quartz glass body in a multi-chamber oven
WO2017103124A2 (de) 2015-12-18 2017-06-22 Heraeus Quarzglas Gmbh & Co. Kg Erhöhen des siliziumgehalts bei der herstellung von quarzglas
US11299417B2 (en) 2015-12-18 2022-04-12 Heraeus Quarzglas Gmbh & Co. Kg Preparation of a quartz glass body in a melting crucible of refractory metal
CN108698888A (zh) 2015-12-18 2018-10-23 贺利氏石英玻璃有限两合公司 在石英玻璃制备中作为中间物的经碳掺杂的二氧化硅颗粒的制备
TWI808933B (zh) 2015-12-18 2023-07-21 德商何瑞斯廓格拉斯公司 石英玻璃體、二氧化矽顆粒、光導、施照體、及成型體及其製備方法
JP6887201B2 (ja) * 2016-12-22 2021-06-16 古河電気工業株式会社 光ファイバの製造方法及び光ファイバ
JP6606116B2 (ja) * 2017-03-24 2019-11-13 古河電気工業株式会社 光ファイバの製造方法
CN107098578B (zh) * 2017-04-27 2019-06-25 烽火通信科技股份有限公司 用于制造多层结构光纤的光纤预制棒及制造光纤的方法
CN107082558B (zh) * 2017-04-27 2019-12-03 烽火通信科技股份有限公司 一种采用光纤预制棒制造单模光纤的方法
CN107082559B (zh) * 2017-05-10 2019-08-13 烽火通信科技股份有限公司 光纤的快速制造方法
JP2019081682A (ja) * 2017-10-31 2019-05-30 古河電気工業株式会社 光ファイバの製造方法
JP2019182694A (ja) * 2018-04-05 2019-10-24 三菱ケミカル株式会社 合成シリカガラス粉
JP6719505B2 (ja) * 2018-06-21 2020-07-08 古河電気工業株式会社 光ファイバの製造方法及び光ファイバ母材の製造方法
CN110422999A (zh) * 2019-07-31 2019-11-08 中国船舶重工集团公司第七0七研究所 用于制造光子晶体光纤预制棒的蜂巢式工装及其制造方法
EP3832363A1 (en) * 2019-12-03 2021-06-09 ASML Netherlands B.V. A device and method for connecting a fibre preform to a pressure supply system
CN111499182B (zh) * 2020-03-23 2021-09-14 中国科学院西安光学精密机械研究所 一种分布式侧面泵浦耦合光纤的在线拉制制备方法及***
CN111470767B (zh) * 2020-05-08 2022-07-05 江苏永鼎光纤科技有限公司 管外法沉积工艺中固废石英粉末的回收及再利用方法
CN111635127B (zh) * 2020-05-08 2023-06-09 江苏永鼎光纤科技有限公司 含有功能性石英包层的光纤预制棒及其制备方法
CN113716856B (zh) * 2020-05-25 2022-12-23 中天科技精密材料有限公司 光纤预制棒的制造设备、方法及光纤预制棒

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL261074A (pt) * 1958-08-11
JPS58104031A (ja) 1981-12-10 1983-06-21 Nippon Telegr & Teleph Corp <Ntt> 光フアイバ用母材の製造方法
JPS58151336A (ja) 1982-03-03 1983-09-08 Nippon Telegr & Teleph Corp <Ntt> オプテイカルガラスロツドの製造方法
JPS61132535A (ja) 1984-11-28 1986-06-20 Furukawa Electric Co Ltd:The 石英系光フアイバの製造方法
US4936650A (en) * 1986-04-24 1990-06-26 British Telecommunications Public Limited Company Optical wave guides
US4820322A (en) * 1986-04-28 1989-04-11 American Telephone And Telegraph Company At&T Bell Laboratories Method of and apparatus for overcladding a glass rod
DE3921489A1 (de) 1989-06-30 1991-01-03 Kabelmetal Electro Gmbh Verfahren zur herstellung eines lichtleiters
CA2088238C (en) 1992-01-30 1998-08-18 Masato Oku Method of manufacturing optical fiber preform
FR2693451B1 (fr) * 1992-07-07 1994-08-19 Alcatel Nv Procédé de fabrication d'une poudre de silice et application d'une telle poudre à la réalisation d'une préforme pour fibre optique.
JP2816097B2 (ja) 1994-07-27 1998-10-27 日立電線株式会社 希土類元素添加マルチコア光ファイバ、その製造方法、およびその光ファイバを利用した光増幅器
JP3434945B2 (ja) * 1995-09-20 2003-08-11 信越石英株式会社 ファイバ用中空シリカガラス母材の製造方法
JP3797567B2 (ja) 1995-10-31 2006-07-19 信越石英株式会社 光ファイバ用母材の製造方法
FR2741061B1 (fr) * 1995-11-13 1998-03-20 Alcatel Fibres Optiques Procede de fabrication d'une fibre optique monomode et amplificateur optique utilisant une telle fibre
KR0184481B1 (ko) * 1996-06-10 1999-05-15 김광호 광섬유 제조장치의 고생산성 광섬유 인출장치 및 그 인출방법
JP2002510273A (ja) * 1997-06-23 2002-04-02 コーニング インコーポレイテッド 光導波路物品のための組成物および連続する被覆を備えた線条体の作成方法
CN1125788C (zh) * 1998-02-03 2003-10-29 住友电气工业株式会社 光纤母材的制造方法
US6334338B1 (en) * 1998-07-02 2002-01-01 Lucent Technologies Inc. Sol gel process of making a fiber preform with removal of oxide particles
US6467312B1 (en) * 2000-07-11 2002-10-22 Fitel Usa Corp. Sol gel method of making an optical fiber with multiple apetures
GB0209908D0 (en) 2002-04-30 2002-06-05 Blazephotonics Ltd A method and apparatus relating to optical fibres
US20050204780A1 (en) * 2002-05-09 2005-09-22 The Furukawa Electric Co., Ltd. Method for manufacturing optical fiber
JP2004091304A (ja) * 2002-07-08 2004-03-25 Furukawa Electric Co Ltd:The 光ファイバ母材の調芯方法
US7444838B2 (en) * 2003-10-30 2008-11-04 Virginia Tech Intellectual Properties, Inc. Holey optical fiber with random pattern of holes and method for making same
US20050226580A1 (en) * 2004-04-08 2005-10-13 Samson Bryce N Optical fiber for handling higher powers
US8033142B2 (en) * 2004-04-27 2011-10-11 Silitec Sa Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fiber and apparatus
US7072552B2 (en) * 2004-12-02 2006-07-04 Nufern Optical fiber with micro-structured cladding

Also Published As

Publication number Publication date
ATE492519T1 (de) 2011-01-15
ES2622450T3 (es) 2017-07-06
WO2005102947A1 (en) 2005-11-03
BRPI0418783B1 (pt) 2013-07-16
US8132429B2 (en) 2012-03-13
PL1740511T3 (pl) 2017-09-29
EP1740511A1 (en) 2007-01-10
US20070214841A1 (en) 2007-09-20
PL1740510T3 (pl) 2011-06-30
CN1989078A (zh) 2007-06-27
JP5219067B2 (ja) 2013-06-26
CN1984850B (zh) 2012-09-05
EP1740511B1 (en) 2017-01-18
JP2007534592A (ja) 2007-11-29
CN1984850A (zh) 2007-06-20
DK1740510T3 (da) 2011-04-04
BRPI0510264A (pt) 2007-10-30
EP1740510B1 (en) 2010-12-22
EP1740510A1 (en) 2007-01-10
KR20070018060A (ko) 2007-02-13
CN1989078B (zh) 2011-10-19
JP2007534591A (ja) 2007-11-29
ES2358883T3 (es) 2011-05-16
BRPI0510264B1 (pt) 2019-08-20
JP5054513B2 (ja) 2012-10-24
WO2005102946A1 (en) 2005-11-03
PT1740510E (pt) 2011-03-24
KR101115615B1 (ko) 2012-02-17
DE602004030720D1 (de) 2011-02-03

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