JPS6483533A - Production of optical fiber preform - Google Patents

Production of optical fiber preform

Info

Publication number
JPS6483533A
JPS6483533A JP24088687A JP24088687A JPS6483533A JP S6483533 A JPS6483533 A JP S6483533A JP 24088687 A JP24088687 A JP 24088687A JP 24088687 A JP24088687 A JP 24088687A JP S6483533 A JPS6483533 A JP S6483533A
Authority
JP
Japan
Prior art keywords
preform
core tube
hot plasma
porous glass
furnace core
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.)
Pending
Application number
JP24088687A
Other languages
Japanese (ja)
Inventor
Suehiro Miyamoto
Kenji Nishide
Taiichiro Tanaka
Katsuyuki Seto
Ryozo Yamauchi
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.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
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 Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP24088687A priority Critical patent/JPS6483533A/en
Publication of JPS6483533A publication Critical patent/JPS6483533A/en
Pending 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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
    • 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
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/12—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
    • 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
    • C03B2201/24—Doped silica-based glasses doped with non-metals other than boron or fluorine doped with nitrogen, e.g. silicon oxy-nitride glasses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To enable water-cooling of a quartz furnace core tube to prolong its life and to produce the titled preform having increased content of F or N, by passing a porous glass preform for optical fiber through hot plasma, thereby converting the preform to transparent glass. CONSTITUTION:A quartz furnace core tube 3 is provided with an inlet port 5 and an outlet port 6 of cooling water and is surrounded by a work coil 7 connected with a high-frequency oscillator. A porous glass preform 1 is supported with a freely rotatable and vertically movable supporting member 2 and placed in the core tube 3. The furnace core tube 3 is supplied with a hot plasma-generation gas selected from Ar, O2, N2 and He through a feed pipe 10, a flow meter 9 and a feeding port 8 and a hot plasma is generated by applying a high-frequency power to the work coil 7. The porous glass preform is lowered and is converted to transparent glass from its tip end. The titled preform having increased content of F or N compared with conventional process can be produced by supplying the atmosphere in the core tube with an F-containing gas (e.g. SiF4) or an N-containing gas (e.g. NH3).
JP24088687A 1987-09-28 1987-09-28 Production of optical fiber preform Pending JPS6483533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24088687A JPS6483533A (en) 1987-09-28 1987-09-28 Production of optical fiber preform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24088687A JPS6483533A (en) 1987-09-28 1987-09-28 Production of optical fiber preform

Publications (1)

Publication Number Publication Date
JPS6483533A true JPS6483533A (en) 1989-03-29

Family

ID=17066158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24088687A Pending JPS6483533A (en) 1987-09-28 1987-09-28 Production of optical fiber preform

Country Status (1)

Country Link
JP (1) JPS6483533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0340929A (en) * 1989-07-06 1991-02-21 Shinetsu Sekiei Kk Synthetic quartz glass member having excellent heat resistance and workability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0340929A (en) * 1989-07-06 1991-02-21 Shinetsu Sekiei Kk Synthetic quartz glass member having excellent heat resistance and workability

Similar Documents

Publication Publication Date Title
JPS5567533A (en) Production of glass base material for light transmission
RU2391298C2 (en) Plasma burner for making synthetic silicon dioxide
ES8300205A1 (en) Process for reducing the hydroxyl-group content in preforms for optical fibres manufactured by MCVD process.
GB1061042A (en) Improvements in the methods for the production of vitreous silica
WO1980002020A1 (en) Methods and apparatus for heating a glass tube
DE3464360D1 (en) Process and apparatus for manufacturing optical-fibre preforms at high deposition rate
CN104556673A (en) Device and method for reducing impurity and bubble on core cladding interface for large-size optical fiber perform
JPS6483533A (en) Production of optical fiber preform
JPS57100933A (en) Preparation of base material for optical fiber
JPS5717433A (en) Dehydrating and sintering method for porous base material for optical fiber with low loss
CN204356232U (en) A kind of large-scale optical fiber prefabricating stick reduces the device of core bag interface impurity, bubble
JP2000310404A (en) Burner for working optical fiber pre-form
JPS5734034A (en) Dehydration treatment of porous preform for optical fiber
JPS5711842A (en) Preparation of base material for optical fiber and preparing apparatus
JPS5879835A (en) Surface-treating method for optical fiber preform
JPS649831A (en) Production of preform for optical fiber
JPS5761641A (en) Manufacturing of optical fiber preform
JPS57149833A (en) Manufacture of quartz glass product
JPS54142317A (en) Production of optical fibers
CN1035608C (en) Continuous electrofusion method for non-hydroxy transparent quartz glass
JPS5520277A (en) Production of glass for light transmission body
JPS5562821A (en) Production of optical fiber
DE3361709D1 (en) Process and device for producing hot gases
JPS55144438A (en) Producing silica glass tube
JPS57135738A (en) Manufacturing of oxide soot rod for optical fiber