BR0318672A - processo para produzir um fibra óptica de baixa atenuação - Google Patents

processo para produzir um fibra óptica de baixa atenuação

Info

Publication number
BR0318672A
BR0318672A BRPI0318672-5A BR0318672A BR0318672A BR 0318672 A BR0318672 A BR 0318672A BR 0318672 A BR0318672 A BR 0318672A BR 0318672 A BR0318672 A BR 0318672A
Authority
BR
Brazil
Prior art keywords
preform
low attenuation
glass
soot
produce
Prior art date
Application number
BRPI0318672-5A
Other languages
English (en)
Other versions
BR0318672B1 (pt
Inventor
Antonio Adigrat
Stefano Grieco
Valeria Caronna
Giuseppe Ferri
Franco Cocchini
Original Assignee
Prysmian Cavi Sistemi Energia
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 Prysmian Cavi Sistemi Energia filed Critical Prysmian Cavi Sistemi Energia
Publication of BR0318672A publication Critical patent/BR0318672A/pt
Publication of BR0318672B1 publication Critical patent/BR0318672B1/pt

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
    • C03B37/012—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]
    • C03B37/01466—Means for changing or stabilising the diameter or form of tubes or rods
    • C03B37/01473—Collapsing
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

"PROCESSO PARA PRODUZIR UMA FIBRA óPTICA DE BAIXA ATENUAçãO". Um processo para produzir uma fibra óptica de baixa atenuação compreende produzir uma pré-forma de núcleo de fuligem (23) por meio de deposição química sobre um substrato; remover o substrato da pré-forma de núcleo de fuligem (23) formando com isto um furo central (25) ao longo da pré-forma de fuligem (23); secar e consolidar a pré-forma de núcleo de fuligem (23) em uma fornalha de consolidação (20) pré-formar uma pré-forma de núcleo de vidro (23), aquecer a pré-forma de vidro (23) na fornalha de consolidação (20) acima de uma temperatura de fusão de vidro para produzir uma redução do diâmetro do furo central (26); e esticar a pré-forma de núcleo de vidro (23) para fechar completamente o furo central.
BRPI0318672-5A 2003-12-24 2003-12-24 processo para produzir uma pré-forma de núcleo de vidro para uma fibra óptica de baixa atenuação. BR0318672B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2003/051102 WO2005063638A1 (en) 2003-12-24 2003-12-24 Process for producing a low-attenuation optical fiber

Publications (2)

Publication Number Publication Date
BR0318672A true BR0318672A (pt) 2006-11-28
BR0318672B1 BR0318672B1 (pt) 2012-01-24

Family

ID=34717153

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0318672-5A BR0318672B1 (pt) 2003-12-24 2003-12-24 processo para produzir uma pré-forma de núcleo de vidro para uma fibra óptica de baixa atenuação.

Country Status (8)

Country Link
US (1) US7908888B2 (pt)
EP (1) EP1716084B1 (pt)
CN (1) CN1894169A (pt)
AU (1) AU2003304659B2 (pt)
BR (1) BR0318672B1 (pt)
CA (1) CA2550673C (pt)
ES (1) ES2394490T3 (pt)
WO (1) WO2005063638A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110100064A1 (en) * 2004-12-23 2011-05-05 Nextrom Holling, S. A. Method and apparatus for manufacturing an optical fiber core rod
ES2370869T3 (es) * 2005-10-27 2011-12-23 Sterlite Technologies Limited Método de producción de una preforma de fibras ópticas.
CN101268021B (zh) * 2005-12-09 2012-12-12 斯德莱特技术有限公司 生产光纤预制棒的方法
EP2084112B1 (en) 2006-10-17 2011-09-28 Prysmian S.p.A. Process for manufacturing a low-attenuation optical fiber
US9650281B2 (en) * 2014-07-09 2017-05-16 Corning Incorporated Optical fiber with reducing hydrogen sensitivity
JP2016088821A (ja) * 2014-11-10 2016-05-23 信越化学工業株式会社 光ファイバ用多孔質ガラス母材の焼結装置及び焼結方法
EP3307684B1 (en) * 2015-06-12 2019-10-09 Prysmian S.p.A. Method of manufacturing preforms for optical fibres having low attenuation loss
JP2022148438A (ja) * 2021-03-24 2022-10-06 住友電気工業株式会社 光ファイバ母材の製造方法、及び光ファイバ母材の製造装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932162A (en) 1974-06-21 1976-01-13 Corning Glass Works Method of making glass optical waveguide
US4684383A (en) * 1986-01-30 1987-08-04 Corning Glass Works Methods for reducing the water content of optical waveguide fibers
US4810276A (en) 1987-08-05 1989-03-07 Corning Glass Works Forming optical fiber having abrupt index change
AU4973100A (en) 1999-04-26 2000-11-10 Corning Incorporated Low water peak optical waveguide fiber and method of manufacturing same
DE60032363T2 (de) * 1999-04-26 2007-09-27 Corning Incorporated Optische faser mit niedrigen polarisationsmodendispersion sowie dämpfung und ihre herstelungsverfahren
WO2001049616A1 (en) 1999-12-29 2001-07-12 Pirelli Cavi E Sistemi S.P.A. Apparatus and method for applying traction to an elongate element produced by fusing a preform of glass material and usable in a process for producing an optical fibre
EP1438267A1 (en) * 2001-07-31 2004-07-21 Corning Incorporated Method for fabricating a low polarization mode dispersion optical fiber
WO2003045861A1 (en) 2001-11-29 2003-06-05 Pirelli & C. S.P.A. Apparatus and method for chemical deposition on a rod member in an optical fibre manufacturing process

Also Published As

Publication number Publication date
CA2550673C (en) 2012-05-15
CA2550673A1 (en) 2005-07-14
WO2005063638A1 (en) 2005-07-14
EP1716084B1 (en) 2012-09-05
EP1716084A1 (en) 2006-11-02
AU2003304659A1 (en) 2005-07-21
AU2003304659B2 (en) 2010-10-14
ES2394490T3 (es) 2013-02-01
BR0318672B1 (pt) 2012-01-24
US7908888B2 (en) 2011-03-22
CN1894169A (zh) 2007-01-10
US20080034800A1 (en) 2008-02-14

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/12/2003, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 16A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2546 DE 22-10-2019 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.