JPS6465038A - Production of preform for single-mode optical fiber - Google Patents

Production of preform for single-mode optical fiber

Info

Publication number
JPS6465038A
JPS6465038A JP9201087A JP9201087A JPS6465038A JP S6465038 A JPS6465038 A JP S6465038A JP 9201087 A JP9201087 A JP 9201087A JP 9201087 A JP9201087 A JP 9201087A JP S6465038 A JPS6465038 A JP S6465038A
Authority
JP
Japan
Prior art keywords
preform
clad
refractive index
clad layer
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.)
Granted
Application number
JP9201087A
Other languages
Japanese (ja)
Other versions
JPH07106924B2 (en
Inventor
Takeshi Kyogoku
Yoichi Ishiguro
Tatsuo Saito
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP9201087A priority Critical patent/JPH07106924B2/en
Publication of JPS6465038A publication Critical patent/JPS6465038A/en
Publication of JPH07106924B2 publication Critical patent/JPH07106924B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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]
    • C03B37/01413—Reactant delivery systems
    • 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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
    • 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
    • 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
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C03B2203/24—Single mode [SM or monomode]

Landscapes

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

Abstract

PURPOSE:To uniformize the refractive index distribution of a clad by adding a refractive index controlling substance to the inner or outer layer of the clad to control the difference in the specific refractive index between the inner and outer clad layers at the time of producing the title preform having a core and the inner and outer layers of the clad. CONSTITUTION:A glass material and gaseous fuel are introduced into burners 10 and 11 form the porous preform 9 having a core 7 and an inner clad layer 8, and the preform is heated to obtain the transparent glass preform 14 having a core 12 and an inner clad layer 13. The preform 14 is inserted into a glass tube 15 to form an outer clad layer, heated, and integrated. In the production stage, a refractive index increasing substance (e.g., chlorine) and a refractive index decreasing substance (e.g., fluorine) are added to the inner clad layer 13 or the outer clad layer 15 to control the difference in the specific refractive index between the inner and outer clad layers to <=0.003%, and the preform for a single-mode optical fiber is obtained.
JP9201087A 1987-04-16 1987-04-16 Manufacturing method of base material for single mode and optical fiber Expired - Lifetime JPH07106924B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9201087A JPH07106924B2 (en) 1987-04-16 1987-04-16 Manufacturing method of base material for single mode and optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9201087A JPH07106924B2 (en) 1987-04-16 1987-04-16 Manufacturing method of base material for single mode and optical fiber

Publications (2)

Publication Number Publication Date
JPS6465038A true JPS6465038A (en) 1989-03-10
JPH07106924B2 JPH07106924B2 (en) 1995-11-15

Family

ID=14042511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9201087A Expired - Lifetime JPH07106924B2 (en) 1987-04-16 1987-04-16 Manufacturing method of base material for single mode and optical fiber

Country Status (1)

Country Link
JP (1) JPH07106924B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767147A1 (en) * 1995-06-30 1997-04-09 AT&T IPM Corp. Single mode optical transmission fiber, and method of making the fiber
FR2823198A1 (en) * 2001-04-09 2002-10-11 Cit Alcatel METHOD FOR MANUFACTURING LARGE CAPACITY PREFORMS BY MCVD
JP2003012337A (en) * 2001-06-28 2003-01-15 Shin Etsu Chem Co Ltd Method for designing and producing preform for optical fiber
JP2014196219A (en) * 2013-03-29 2014-10-16 住友電気工業株式会社 Method of producing glass preform for optical fiber, glass preform for optical fiber and method of calculating optical characteristic of optical fiber
JP2019511751A (en) * 2016-03-29 2019-04-25 コーニング インコーポレイテッド Low bending loss optical fiber

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767147A1 (en) * 1995-06-30 1997-04-09 AT&T IPM Corp. Single mode optical transmission fiber, and method of making the fiber
FR2823198A1 (en) * 2001-04-09 2002-10-11 Cit Alcatel METHOD FOR MANUFACTURING LARGE CAPACITY PREFORMS BY MCVD
US6988379B2 (en) 2001-04-09 2006-01-24 Alcatel Method of manufacturing large capacity preforms by MCVD
JP2003012337A (en) * 2001-06-28 2003-01-15 Shin Etsu Chem Co Ltd Method for designing and producing preform for optical fiber
JP2014196219A (en) * 2013-03-29 2014-10-16 住友電気工業株式会社 Method of producing glass preform for optical fiber, glass preform for optical fiber and method of calculating optical characteristic of optical fiber
JP2019511751A (en) * 2016-03-29 2019-04-25 コーニング インコーポレイテッド Low bending loss optical fiber

Also Published As

Publication number Publication date
JPH07106924B2 (en) 1995-11-15

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term
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Year of fee payment: 12