JPS5590431A - Preparation of single mode glass fiber - Google Patents

Preparation of single mode glass fiber

Info

Publication number
JPS5590431A
JPS5590431A JP16284278A JP16284278A JPS5590431A JP S5590431 A JPS5590431 A JP S5590431A JP 16284278 A JP16284278 A JP 16284278A JP 16284278 A JP16284278 A JP 16284278A JP S5590431 A JPS5590431 A JP S5590431A
Authority
JP
Japan
Prior art keywords
single mode
glass fiber
heated
core
preform rod
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
JP16284278A
Other languages
Japanese (ja)
Inventor
Kiyoshi Rokushiya
Koji Okamura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16284278A priority Critical patent/JPS5590431A/en
Publication of JPS5590431A publication Critical patent/JPS5590431A/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
    • C03B37/01205—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
    • 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
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
    • C03B37/01245—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down by drawing and collapsing
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth 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 obtain a long sized, single mode glass fiber easily by a method wherein a process of manufacture that a preform rod is inserted into a glass tube and heated and elongated is repeated, the rod is brought to the ratio of the outer diameters of the desired core to a clad and a wire is drawn. CONSTITUTION:A preform rod 1 having a core forming portion and a clad layer forming portion is covered with a glass tube 2, let pass through a heating furnace 3 and heated and elongated. The preform rod 1 with the ratio of the outer diameters with the desired core is made up by repeating this process of manufacture several times. A single mode glass fiber is built up in such a manner that the preform rod is heated, melted and a wire is drawn. According to this method, a diameter of the core and a clad layer can be enlarged.
JP16284278A 1978-12-28 1978-12-28 Preparation of single mode glass fiber Pending JPS5590431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16284278A JPS5590431A (en) 1978-12-28 1978-12-28 Preparation of single mode glass fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16284278A JPS5590431A (en) 1978-12-28 1978-12-28 Preparation of single mode glass fiber

Publications (1)

Publication Number Publication Date
JPS5590431A true JPS5590431A (en) 1980-07-09

Family

ID=15762269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16284278A Pending JPS5590431A (en) 1978-12-28 1978-12-28 Preparation of single mode glass fiber

Country Status (1)

Country Link
JP (1) JPS5590431A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137328A (en) * 1983-01-20 1984-08-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fluoride fiber
JPS60246240A (en) * 1984-05-07 1985-12-05 ル　ヴエール　フリユオール　エス　ア Manufacture of fluorine glass optical fiber and optical element and device for carrying out same
JPH079946U (en) * 1986-04-28 1995-02-10 エイ・ティ・アンド・ティ・コーポレーション Manufacturing equipment for optical fiber preform with upper clad
EP0731063A3 (en) * 1995-03-06 1997-01-08 Hoya Corp Chalcogenide glass optical fibre, process for producing a preform therefor and process for drawing the fibre therefrom
WO2000078686A1 (en) * 1999-06-22 2000-12-28 Mitsubishi Cable Industries, Ltd. Production method for optical fiber base material
EP1990324A3 (en) * 2007-05-09 2014-02-19 Furukawa Electric North America Inc. (a Delaware Corporation) Increasing the cladding-to-core ratio (D/d) of low D/d ratio core rods in optical fiber preforms

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137328A (en) * 1983-01-20 1984-08-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fluoride fiber
JPS60246240A (en) * 1984-05-07 1985-12-05 ル　ヴエール　フリユオール　エス　ア Manufacture of fluorine glass optical fiber and optical element and device for carrying out same
JPH079946U (en) * 1986-04-28 1995-02-10 エイ・ティ・アンド・ティ・コーポレーション Manufacturing equipment for optical fiber preform with upper clad
EP0731063A3 (en) * 1995-03-06 1997-01-08 Hoya Corp Chalcogenide glass optical fibre, process for producing a preform therefor and process for drawing the fibre therefrom
WO2000078686A1 (en) * 1999-06-22 2000-12-28 Mitsubishi Cable Industries, Ltd. Production method for optical fiber base material
EP1990324A3 (en) * 2007-05-09 2014-02-19 Furukawa Electric North America Inc. (a Delaware Corporation) Increasing the cladding-to-core ratio (D/d) of low D/d ratio core rods in optical fiber preforms

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