WO2005012197A3 - Methods for drawing optical hollow fibres under reduced or over-pressure - Google Patents

Methods for drawing optical hollow fibres under reduced or over-pressure Download PDF

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Publication number
WO2005012197A3
WO2005012197A3 PCT/GB2004/003200 GB2004003200W WO2005012197A3 WO 2005012197 A3 WO2005012197 A3 WO 2005012197A3 GB 2004003200 W GB2004003200 W GB 2004003200W WO 2005012197 A3 WO2005012197 A3 WO 2005012197A3
Authority
WO
WIPO (PCT)
Prior art keywords
methods
over
pressure
under reduced
fibre
Prior art date
Application number
PCT/GB2004/003200
Other languages
French (fr)
Other versions
WO2005012197A2 (en
Inventor
Timothy Adam Birks
Hendrik Sabert
Original Assignee
Blazephotonics Ltd
Timothy Adam Birks
Hendrik Sabert
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 Blazephotonics Ltd, Timothy Adam Birks, Hendrik Sabert filed Critical Blazephotonics Ltd
Publication of WO2005012197A2 publication Critical patent/WO2005012197A2/en
Publication of WO2005012197A3 publication Critical patent/WO2005012197A3/en

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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02295—Microstructured optical fibre
    • G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
    • G02B6/02319—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by core or core-cladding interface features
    • G02B6/02323—Core having lower refractive index than cladding, e.g. photonic band gap guiding
    • G02B6/02328—Hollow or gas filled core
    • 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
    • C03B37/02781—Hollow fibres, e.g. holey fibres
    • 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
    • C03B37/029—Furnaces therefor
    • 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
    • C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
    • 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
    • C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
    • C03B2203/16—Hollow core
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/42—Photonic crystal fibres, e.g. fibres using the photonic bandgap PBG effect, microstructured or holey optical fibres
    • 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
    • C03B2205/08—Sub-atmospheric pressure applied, e.g. vacuum
    • C03B2205/09—Sub-atmospheric pressure applied, e.g. vacuum to the outside of the preform or fibre
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/10—Fibre drawing or extruding details pressurised
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/82—Means for sealing the fibre exit or lower end of the furnace
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/82—Means for sealing the fibre exit or lower end of the furnace
    • C03B2205/83—Means for sealing the fibre exit or lower end of the furnace using gas
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02295—Microstructured optical fibre
    • G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
    • G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
    • G02B6/02347—Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding

Abstract

A method of drawing an optical fibre (310') or the like from an elongate pre-form (310), the fibre (310') and the pre-form (310) having at least one hole (311, 312) running along their lengths, includes the steps of heating the pre-form (310) and drawing the fibre (310') from the pre-form (310) while controlling the ambient pressure around the pre-form (310) to be significantly higher or significantly lower than it would be under standard fibre drawing conditions. As complement or alternative, the hok (311, 312) in the pre-form (310) can be pressurized with a highly diffusive gas.
PCT/GB2004/003200 2003-07-24 2004-07-23 Methods for drawing optical hollow fibres under reduced or over-pressure WO2005012197A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0317352.3 2003-07-24
GB0317352A GB0317352D0 (en) 2003-07-24 2003-07-24 Optical fibres

Publications (2)

Publication Number Publication Date
WO2005012197A2 WO2005012197A2 (en) 2005-02-10
WO2005012197A3 true WO2005012197A3 (en) 2005-07-14

Family

ID=27772599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/003200 WO2005012197A2 (en) 2003-07-24 2004-07-23 Methods for drawing optical hollow fibres under reduced or over-pressure

Country Status (2)

Country Link
GB (1) GB0317352D0 (en)
WO (1) WO2005012197A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427296C (en) * 2005-09-23 2008-10-22 清华大学 Polymer photon crystal fiber drawing tower control system and method
US7793521B2 (en) 2006-03-01 2010-09-14 Corning Incorporated Method enabling dual pressure control within fiber preform during fiber fabrication
WO2010080080A1 (en) 2009-01-08 2010-07-15 Utc Power Corporation Multiple transition flow field and method
US9196913B2 (en) 2009-01-08 2015-11-24 Audi Ag Multiple transition flow field and method
GB2518419B (en) 2013-09-20 2019-05-29 Univ Southampton Hollow-core photonic bandgap fibers
EP3047319B8 (en) * 2013-09-20 2021-06-30 University Of Southampton Methods of manufacturing hollow-core photonic bandgap fibers
CN103553327B (en) * 2013-10-10 2015-10-28 北京交通大学 A kind of when making photonic crystal fiber by the device and method of hydraulic pressure automatic voltage regulation
JP7033532B2 (en) 2015-11-10 2022-03-10 エヌケイティー フォトニクス アクティーゼルスカブ Base material element for fiber base material
WO2017108061A1 (en) 2015-12-23 2017-06-29 Nkt Photonics A/S Hollow core optical fiber and a laser system
JP7136695B2 (en) 2015-12-23 2022-09-13 エヌケイティー フォトニクス アクティーゼルスカブ Photonic crystal fiber assembly
US20190135679A1 (en) * 2016-04-27 2019-05-09 Nkt Photonics A/S A method of fiber production
FR3093718B1 (en) * 2019-03-15 2023-02-17 Univ Limoges Process and device for manufacturing a hollow optical fiber

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158838A (en) * 1984-12-28 1986-07-18 Fujikura Ltd Production of quartz hollow fiber
WO2000049436A1 (en) * 1999-02-19 2000-08-24 Blazephotonics Limited Improvements in or relating to photonic crystal fibres
US20020012512A1 (en) * 2000-06-09 2002-01-31 Elrefaie Aly F. Optical fiber having extended single-mode capability
WO2002083583A1 (en) * 2001-04-12 2002-10-24 Omniguide Communications High index-contrast fiber waveguides and applications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61158838A (en) * 1984-12-28 1986-07-18 Fujikura Ltd Production of quartz hollow fiber
WO2000049436A1 (en) * 1999-02-19 2000-08-24 Blazephotonics Limited Improvements in or relating to photonic crystal fibres
US20020012512A1 (en) * 2000-06-09 2002-01-31 Elrefaie Aly F. Optical fiber having extended single-mode capability
WO2002083583A1 (en) * 2001-04-12 2002-10-24 Omniguide Communications High index-contrast fiber waveguides and applications

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BORZYCKI K: "Holey fibers - application issues", PROCEEDINGS OF 2001 3RD INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS, 18 June 2001 (2001-06-18), pages 92 - 95, XP010552228 *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 362 (C - 389) 4 December 1986 (1986-12-04) *

Also Published As

Publication number Publication date
WO2005012197A2 (en) 2005-02-10
GB0317352D0 (en) 2003-08-27

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