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WO2008038298A3 - A process for preparing a mandrel for producing flawless optical fiber preform and a preform produced therefrom - Google Patents

A process for preparing a mandrel for producing flawless optical fiber preform and a preform produced therefrom Download PDF

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Publication number
WO2008038298A3
WO2008038298A3 PCT/IN2007/000306 IN2007000306W WO2008038298A3 WO 2008038298 A3 WO2008038298 A3 WO 2008038298A3 IN 2007000306 W IN2007000306 W IN 2007000306W WO 2008038298 A3 WO2008038298 A3 WO 2008038298A3
Authority
WO
WIPO (PCT)
Prior art keywords
mandrel
preform
preparing
optical fiber
produced therefrom
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IN2007/000306
Other languages
French (fr)
Other versions
WO2008038298A2 (en
Inventor
Sanket Shah
Jegan Miras
Parag Kulkarni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STERLITE OPTICAL TECHNOLOGIES Ltd
STERLITE OPTICAL TECHNOLOGIES
Original Assignee
STERLITE OPTICAL TECHNOLOGIES Ltd
STERLITE OPTICAL TECHNOLOGIES
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 STERLITE OPTICAL TECHNOLOGIES Ltd, STERLITE OPTICAL TECHNOLOGIES filed Critical STERLITE OPTICAL TECHNOLOGIES Ltd
Publication of WO2008038298A2 publication Critical patent/WO2008038298A2/en
Publication of WO2008038298A3 publication Critical patent/WO2008038298A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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]
    • C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
    • C03B37/01493—Deposition substrates, e.g. targets, mandrels, start rods or tubes
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
    • C03B19/1484—Means for supporting, rotating or translating the article being formed
    • C03B19/1492—Deposition substrates, e.g. targets
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

A process for preparing the mandrel suitable for producing flawless optical fiber preform, wherein the mandrel can be easily removed from the soot porous body without causing any defects, such as voids, bubbles, impurities, uncollapsed portion in the centerline region of the preform thus produced, wherein said process is characterized by heating the mandrel before the start of soot deposition to form a soot porous body having core and clad.
PCT/IN2007/000306 2006-08-25 2007-07-24 A process for preparing a mandrel for producing flawless optical fiber preform and a preform produced therefrom Ceased WO2008038298A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1351MU2006 2006-08-25
IN1351/MUM/2006 2006-08-25

Publications (2)

Publication Number Publication Date
WO2008038298A2 WO2008038298A2 (en) 2008-04-03
WO2008038298A3 true WO2008038298A3 (en) 2008-05-15

Family

ID=39230685

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2007/000306 Ceased WO2008038298A2 (en) 2006-08-25 2007-07-24 A process for preparing a mandrel for producing flawless optical fiber preform and a preform produced therefrom

Country Status (1)

Country Link
WO (1) WO2008038298A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052308B3 (en) * 2009-11-09 2011-02-10 Heraeus Quarzglas Gmbh & Co. Kg Method for producing a quartz glass cylinder and carrier for carrying out the method
US20160257612A1 (en) * 2015-03-04 2016-09-08 Corning Incorporated Coating of bait substrates for optical fiber making

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204850A (en) * 1977-08-26 1980-05-27 Corning Glass Works Carbon coating for a starting member used in producing optical waveguide
JPH0437623A (en) * 1990-05-30 1992-02-07 Furukawa Electric Co Ltd:The Manufacturing method of optical fiber base material
JPH1171125A (en) * 1997-08-26 1999-03-16 Sumitomo Electric Ind Ltd Manufacturing method of preform for optical fiber
JP2000203862A (en) * 1999-01-14 2000-07-25 Furukawa Electric Co Ltd:The Target rod suspension holder for heating furnace for optical fiber preform manufacturing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204850A (en) * 1977-08-26 1980-05-27 Corning Glass Works Carbon coating for a starting member used in producing optical waveguide
JPH0437623A (en) * 1990-05-30 1992-02-07 Furukawa Electric Co Ltd:The Manufacturing method of optical fiber base material
JPH1171125A (en) * 1997-08-26 1999-03-16 Sumitomo Electric Ind Ltd Manufacturing method of preform for optical fiber
JP2000203862A (en) * 1999-01-14 2000-07-25 Furukawa Electric Co Ltd:The Target rod suspension holder for heating furnace for optical fiber preform manufacturing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199212, Derwent World Patents Index; AN 1992-093668 *
DATABASE WPI Week 199921, Derwent World Patents Index; AN 1999-248324 *

Also Published As

Publication number Publication date
WO2008038298A2 (en) 2008-04-03

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