IT8067934A0 - Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd - Google Patents

Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd

Info

Publication number
IT8067934A0
IT8067934A0 IT8067934A IT6793480A IT8067934A0 IT 8067934 A0 IT8067934 A0 IT 8067934A0 IT 8067934 A IT8067934 A IT 8067934A IT 6793480 A IT6793480 A IT 6793480A IT 8067934 A0 IT8067934 A0 IT 8067934A0
Authority
IT
Italy
Prior art keywords
preforms
procedure
reduction
content
hydroxyl groups
Prior art date
Application number
IT8067934A
Other languages
English (en)
Other versions
IT1130481B (it
Inventor
Eros Modone
Giacomo Roba
Original Assignee
Cselt Centro Studi Lab Telecom
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 Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Publication of IT8067934A0 publication Critical patent/IT8067934A0/it
Priority to IT67934/80A priority Critical patent/IT1130481B/it
Priority to JP8702781A priority patent/JPS5727937A/ja
Priority to BR8103648A priority patent/BR8103648A/pt
Priority to DE8181104458T priority patent/DE3161949D1/de
Priority to EP81104458A priority patent/EP0042135B1/en
Priority to DK254881A priority patent/DK254881A/da
Priority to AT81104458T priority patent/ATE5876T1/de
Priority to NO811998A priority patent/NO151194C/no
Priority to AU71825/81A priority patent/AU538205B2/en
Priority to ES503060A priority patent/ES503060A0/es
Priority to CA000379750A priority patent/CA1158047A/en
Priority to US06/273,423 priority patent/US4389230A/en
Application granted granted Critical
Publication of IT1130481B publication Critical patent/IT1130481B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045—Silica-containing oxide glass compositions
    • C03C13/047—Silica-containing oxide glass compositions containing deuterium
    • 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]
    • C03B37/018—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] 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
    • C03B37/01853—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
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/20—Doped silica-based glasses doped with non-metals other than boron or fluorine
    • C03B2201/22—Doped silica-based glasses doped with non-metals other than boron or fluorine doped with deuterium
    • 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
    • Y10S65/90—Drying, dehydration, minimizing oh groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Optics & Photonics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Glass Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Surface Treatment Of Glass (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
IT67934/80A 1980-06-16 1980-06-16 Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd IT1130481B (it)

Priority Applications (12)

Application Number Priority Date Filing Date Title
IT67934/80A IT1130481B (it) 1980-06-16 1980-06-16 Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd
JP8702781A JPS5727937A (en) 1980-06-16 1981-06-08 Reduction of hydroxyl group content from preform for optical fiber made by mcvd process
BR8103648A BR8103648A (pt) 1980-06-16 1981-06-09 Processo para a reducao do teorde grupos hidroxila em pre-formas para fibras oticas manufatiradas pelo processo mcvd
AT81104458T ATE5876T1 (de) 1980-06-16 1981-06-11 Verfahren zur verminderung des hydroxylgruppeninhalts in nach dem mcvd-verfahren hergestellten optischen faservorformen.
EP81104458A EP0042135B1 (en) 1980-06-16 1981-06-11 Process for reducing the hydroxyl-group content in preforms for optical fibres manufactured by mcvd process
DK254881A DK254881A (da) 1980-06-16 1981-06-11 Fremgangsmaade til reduktion af hydroxylgruppeindholdet i halvfabrikata til optiske fibre fremstillet ved mcvd-metoden
DE8181104458T DE3161949D1 (en) 1980-06-16 1981-06-11 Process for reducing the hydroxyl-group content in preforms for optical fibres manufactured by mcvd process
NO811998A NO151194C (no) 1980-06-16 1981-06-12 Fremgangsmaate for redusering av hydroksylgruppeinnholdet i forformer for optiske fibre
AU71825/81A AU538205B2 (en) 1980-06-16 1981-06-15 Reduction of hydroxyl-group content in optical fibre preforms
ES503060A ES503060A0 (es) 1980-06-16 1981-06-15 Procedimiento para reducir el contenido en iones oxidrilos en preformas para fibras opticas.
CA000379750A CA1158047A (en) 1980-06-16 1981-06-15 Process for reducing the hydroxyl-group in preforms for optical fibres manufactured by mcvd process
US06/273,423 US4389230A (en) 1980-06-16 1981-06-15 Process for improving the transmission characteristics of optical fibers drawn from preforms made by the MCVD technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67934/80A IT1130481B (it) 1980-06-16 1980-06-16 Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd

Publications (2)

Publication Number Publication Date
IT8067934A0 true IT8067934A0 (it) 1980-06-16
IT1130481B IT1130481B (it) 1986-06-11

Family

ID=11306484

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67934/80A IT1130481B (it) 1980-06-16 1980-06-16 Procedimento per la riduzione del contenuto di gruppi ossidrili in preforme per fibre ottiche realizzate secondo il metodo mcvd

Country Status (12)

Country Link
US (1) US4389230A (it)
EP (1) EP0042135B1 (it)
JP (1) JPS5727937A (it)
AT (1) ATE5876T1 (it)
AU (1) AU538205B2 (it)
BR (1) BR8103648A (it)
CA (1) CA1158047A (it)
DE (1) DE3161949D1 (it)
DK (1) DK254881A (it)
ES (1) ES503060A0 (it)
IT (1) IT1130481B (it)
NO (1) NO151194C (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515612A (en) * 1982-04-19 1985-05-07 At&T Bell Laboratories Method for optical fiber fabrication including deuterium/hydrogen exchange
IT1157146B (it) * 1982-12-16 1987-02-11 Cselt Centro Studi Lab Telecom Metodo per la compensazione del profilo di indice di rifrazione di fibre ottiche
US4504297A (en) * 1983-07-06 1985-03-12 At&T Bell Laboratories Optical fiber preform manufacturing method
JPS6090852A (ja) * 1983-10-22 1985-05-22 Furukawa Electric Co Ltd:The 光ファイバの処理方法
DE3338714A1 (de) * 1983-10-25 1985-05-02 Wacker-Chemitronic Gesellschaft für Elektronik-Grundstoffe mbH, 8263 Burghausen Verfahren zur verringerung des hydroxylanteils in lichtwellenleitern
US4604119A (en) * 1984-01-24 1986-08-05 At&T Bell Laboratories Method for fusion splicing optical fiber
US4685945A (en) * 1984-02-06 1987-08-11 Friedemann Freund Method of processing high purity low-OH vitreous silica fibers
DE3504012A1 (de) * 1984-02-06 1985-08-08 Friedemann Prof. Dr. Tempe Ariz. Freund Verfahren zum behandeln von lichtleitern und mit diesem verfahren erhaeltlicher lichtleiter
US5336360A (en) * 1986-08-18 1994-08-09 Clemson University Laser assisted fiber growth
US4932990A (en) * 1987-07-30 1990-06-12 At&T Bell Laboratories Methods of making optical fiber and products produced thereby
EP0401845B2 (en) * 1989-06-09 2001-04-11 Heraeus Quarzglas GmbH & Co. KG Optical members and blanks of synthetic silica glass and method for their production
US6499318B1 (en) 1994-03-24 2002-12-31 Fitel Usa Corp. Glass optical waveguides passivated against hydrogen-induced loss increases
US5621843A (en) * 1994-06-09 1997-04-15 Ceramoptec Industries, Inc. Silica lightguide for UV applications
KR100334820B1 (ko) 1999-07-22 2002-05-02 윤종용 분산제어 광섬유 및 그 대구경 모재의 제조 방법
US6496627B1 (en) 2000-07-14 2002-12-17 Tyco Telecommunications (Us) Inc. Device and method for improved long term signal attenuation performance of fiber optic cable and apparatus interfaces
US6776012B2 (en) 2001-06-26 2004-08-17 Fitel Usa Corp. Method of making an optical fiber using preform dehydration in an environment of chlorine-containing gas, fluorine-containing gases and carbon monoxide
US20030084684A1 (en) * 2001-10-19 2003-05-08 Jds Uniphase Corporation Method of reducing a hydrogen content of an optical fiber or preform
US20030084685A1 (en) * 2001-11-02 2003-05-08 Jds Uniphase Corporation Method of making an optical fiber or preform having a reduced hydrogen content
US6856739B2 (en) * 2001-11-07 2005-02-15 Jds Uniphase Corporation Optical fiber for resisting hydrogen-induced loss
US20050135759A1 (en) * 2003-12-22 2005-06-23 Xingwu Wang Optical fiber assembly
US6799440B2 (en) * 2002-02-22 2004-10-05 General Electric Company Optical fiber deposition tube fused in deuterium atmosphere for attenuation improvement
US20040139766A1 (en) * 2003-01-17 2004-07-22 Weeks Gene K. Systems and methods for recycling gas used in treating optical fiber
US7752870B1 (en) 2003-10-16 2010-07-13 Baker Hughes Incorporated Hydrogen resistant optical fiber formation technique
JP2007063094A (ja) * 2005-09-01 2007-03-15 Sumitomo Electric Ind Ltd 石英管の内面処理方法、光ファイバ母材製造方法及び光ファイバ製造方法
NL2009962C2 (en) * 2012-12-11 2014-06-12 Draka Comteq Bv Method for activating an inner surface of a hollow glass substrate tube for the manufacturing of an optical fiber preform.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791714A (en) * 1972-03-30 1974-02-12 Corning Glass Works Method of producing glass for optical waveguides
CA1084534A (en) * 1977-03-22 1980-08-26 Daisuke Kato Method of producing glass compositions for optical wave guides

Also Published As

Publication number Publication date
JPS6351977B2 (it) 1988-10-17
CA1158047A (en) 1983-12-06
AU538205B2 (en) 1984-08-02
IT1130481B (it) 1986-06-11
NO151194B (no) 1984-11-19
EP0042135B1 (en) 1984-01-18
JPS5727937A (en) 1982-02-15
ES8300205A1 (es) 1982-10-01
DK254881A (da) 1981-12-17
BR8103648A (pt) 1982-03-02
EP0042135A1 (en) 1981-12-23
US4389230A (en) 1983-06-21
ATE5876T1 (de) 1984-02-15
NO811998L (no) 1981-12-17
AU7182581A (en) 1981-12-24
ES503060A0 (es) 1982-10-01
NO151194C (no) 1985-02-27
DE3161949D1 (en) 1984-02-23

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