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JPS54147226A - Production of optical fiber - Google Patents

Production of optical fiber

Info

Publication number
JPS54147226A
JPS54147226A JP5633578A JP5633578A JPS54147226A JP S54147226 A JPS54147226 A JP S54147226A JP 5633578 A JP5633578 A JP 5633578A JP 5633578 A JP5633578 A JP 5633578A JP S54147226 A JPS54147226 A JP S54147226A
Authority
JP
Japan
Prior art keywords
core
fiber
core part
clad
refractive index
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
JP5633578A
Other languages
Japanese (ja)
Inventor
Masao Kawashima
Hisanao Okada
Fumi Kikuchi
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 JP5633578A priority Critical patent/JPS54147226A/en
Priority to US06/035,843 priority patent/US4249925A/en
Priority to CA000327258A priority patent/CA1119409A/en
Priority to NLAANVRAGE7903686,A priority patent/NL174640C/en
Priority to GB7916441A priority patent/GB2023127B/en
Priority to DE2919080A priority patent/DE2919080B2/en
Priority to FR7912020A priority patent/FR2425411B1/en
Publication of JPS54147226A publication Critical patent/JPS54147226A/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
    • C03B37/02—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
    • C03B37/02718—Thermal treatment of the fibre during the drawing process, e.g. cooling
    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/104—Coating to obtain optical fibres
    • C03C25/106—Single coatings
    • C03C25/1061—Inorganic coatings

Landscapes

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

Abstract

PURPOSE:On the surface of bare fiber for core part is formed the clad layer of lower refractive index than that of the core part by a specific method, thus making the boundary surface between core and clad parts extremely clear to form high-quality optical fiber free from defect in refractive index profile. CONSTITUTION:Parent material for core part 21 prepared from high-purity quartz glass is formed into fiber core using high frequency induction furnace 23 and a fine powder of silica doped with boron by the flame hydrolysis method using a ring type oxyhydrogen burner on the surface of the fiber. The fine powder then is heated in electric furnace 27, sintered and glassified and integrated with the core part. Then, the resulting fiber is coated with a polymer by polymer coater 28, passed through electric furnace 29, taken out by device 30 and wound on drum. The formation of the clad layer may be effected by glassifying directly the clad material on the surface of the core and coating with the plastic.
JP5633578A 1978-05-12 1978-05-12 Production of optical fiber Pending JPS54147226A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP5633578A JPS54147226A (en) 1978-05-12 1978-05-12 Production of optical fiber
US06/035,843 US4249925A (en) 1978-05-12 1979-05-04 Method of manufacturing an optical fiber
CA000327258A CA1119409A (en) 1978-05-12 1979-05-09 Method of manufacturing an optical fiber
NLAANVRAGE7903686,A NL174640C (en) 1978-05-12 1979-05-10 METHOD FOR MANUFACTURING AN OPTICAL FIBER
GB7916441A GB2023127B (en) 1978-05-12 1979-05-11 Optical fibres
DE2919080A DE2919080B2 (en) 1978-05-12 1979-05-11 Process for making a core and clad optical fiber
FR7912020A FR2425411B1 (en) 1978-05-12 1979-05-11 METHOD FOR MANUFACTURING OPTICAL FIBER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5633578A JPS54147226A (en) 1978-05-12 1978-05-12 Production of optical fiber

Publications (1)

Publication Number Publication Date
JPS54147226A true JPS54147226A (en) 1979-11-17

Family

ID=13024325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5633578A Pending JPS54147226A (en) 1978-05-12 1978-05-12 Production of optical fiber

Country Status (1)

Country Link
JP (1) JPS54147226A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924441A (en) * 1972-06-27 1974-03-04
JPS5166840A (en) * 1974-12-06 1976-06-09 Sumitomo Electric Industries HIKARIDENSOYOFUAIBAANO SEIZOHOHO
JPS5394943A (en) * 1977-01-28 1978-08-19 Nippon Selfoc Co Ltd Production method and equipment of light fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4924441A (en) * 1972-06-27 1974-03-04
JPS5166840A (en) * 1974-12-06 1976-06-09 Sumitomo Electric Industries HIKARIDENSOYOFUAIBAANO SEIZOHOHO
JPS5394943A (en) * 1977-01-28 1978-08-19 Nippon Selfoc Co Ltd Production method and equipment of light fiber

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