FR2401103A1 - METHOD AND APPARATUS FOR THE PRODUCTION OF OPTICAL TRANSMISSION FIBERS - Google Patents

METHOD AND APPARATUS FOR THE PRODUCTION OF OPTICAL TRANSMISSION FIBERS

Info

Publication number
FR2401103A1
FR2401103A1 FR7812700A FR7812700A FR2401103A1 FR 2401103 A1 FR2401103 A1 FR 2401103A1 FR 7812700 A FR7812700 A FR 7812700A FR 7812700 A FR7812700 A FR 7812700A FR 2401103 A1 FR2401103 A1 FR 2401103A1
Authority
FR
France
Prior art keywords
production
optical transmission
transmission fibers
turbulence
furnace
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
FR7812700A
Other languages
French (fr)
Other versions
FR2401103B1 (en
Inventor
Kozo Yoshimura
Kaoru Haruguchi
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
Priority claimed from JP5030277A external-priority patent/JPS53135649A/en
Priority claimed from JP5029877A external-priority patent/JPS53135648A/en
Priority claimed from JP5725377U external-priority patent/JPS53154215U/ja
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of FR2401103A1 publication Critical patent/FR2401103A1/en
Application granted granted Critical
Publication of FR2401103B1 publication Critical patent/FR2401103B1/fr
Granted 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
    • C03B37/029—Furnaces therefor
    • 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
    • C03B2205/62—Heating means for drawing
    • C03B2205/64—Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Abstract

Appareil pour l'étirage de fibres optiques du type comportant un four renfermant un gaz inerte destiné à recevoir une matière préformée à l'état brut et un moyen de chauffage logé dans ce four et servant à porter ledit matériau à une température qui permet l'étirage. Cet appareil se caractérise par le fait que ledit four a une surface intérieure cylindrique, sans aucune discontinuité ni aucun gradin, de sorte que la turbulence de ce gaz inerte à l'intérieur du four est réduite au minimum, ce qui réduit au minimum les variations du diamètre des fibres sous l'effet des variations de température qui seraient provoquées par une telle turbulence. Application à la réalisation de fibres optiques.Apparatus for drawing optical fibers of the type comprising an oven containing an inert gas intended to receive a preformed material in the raw state and a heating means housed in this oven and serving to bring said material to a temperature which allows the drawing. This apparatus is characterized by the fact that said furnace has a cylindrical interior surface, without any discontinuity or step, so that the turbulence of this inert gas inside the furnace is reduced to a minimum, which minimizes the variations. the diameter of the fibers under the effect of temperature variations which would be caused by such turbulence. Application to the production of optical fibers.

FR7812700A 1977-04-30 1978-04-28 METHOD AND APPARATUS FOR THE PRODUCTION OF OPTICAL TRANSMISSION FIBERS Granted FR2401103A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5030277A JPS53135649A (en) 1977-04-30 1977-04-30 Production of optical fibers
JP5029877A JPS53135648A (en) 1977-04-30 1977-04-30 Production of fibers for optical communication
JP5725377U JPS53154215U (en) 1977-05-06 1977-05-06

Publications (2)

Publication Number Publication Date
FR2401103A1 true FR2401103A1 (en) 1979-03-23
FR2401103B1 FR2401103B1 (en) 1982-12-17

Family

ID=27293915

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812700A Granted FR2401103A1 (en) 1977-04-30 1978-04-28 METHOD AND APPARATUS FOR THE PRODUCTION OF OPTICAL TRANSMISSION FIBERS

Country Status (4)

Country Link
CA (1) CA1101164A (en)
DE (1) DE2818550C2 (en)
FR (1) FR2401103A1 (en)
GB (1) GB1575299A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463827A1 (en) * 1979-08-21 1981-02-27 Toho Beslon Co APPARATUS FOR THE PRODUCTION OF GRAPHITE FIBERS
FR2532866A1 (en) * 1982-09-13 1984-03-16 Pont A Mousson CHENAL CASTING INDUCTION HEATED
EP0110899A1 (en) * 1982-05-28 1984-06-20 Western Electric Co Modified zirconia induction furnace.
FR2587502A1 (en) * 1985-09-19 1987-03-20 Centre Nat Rech Scient Apparatus enabling optical fibres to be melted and drawn, especially for the manufacture of couplers
EP0302121A1 (en) * 1987-02-16 1989-02-08 Sumitomo Electric Industries Limited Heating furnace for glass materials for optical fiber and method of manufacturing same
US4969941A (en) * 1987-02-16 1990-11-13 Sumitomo Electric Industries, Ltd. Furnace for heating glass preform for optical fiber and method for producing glass preform

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5236483A (en) * 1985-07-16 1993-08-17 Seiko Epson Corporation Method of preparing silica glass
DE3735879C2 (en) * 1987-10-23 1995-07-20 Leybold Ag Method and device for sintering ceramic blanks
JPH02196045A (en) * 1989-01-23 1990-08-02 Sumitomo Electric Ind Ltd Heating furnace for producing base material of high-purity quartz
US5259856A (en) * 1989-09-06 1993-11-09 Sumitomo Electric Industrial, Ltd. Method of producing glass preform in furnace for heating glass
JP2808857B2 (en) * 1989-09-06 1998-10-08 住友電気工業株式会社 Heating furnace and manufacturing method of glass preform for optical fiber
CA2025880A1 (en) * 1989-09-25 1991-03-26 Ichiro Tsuchiya Furnace for production of optical fiber preform
EP0867414A1 (en) * 1997-03-27 1998-09-30 Alcatel Graphite liner and heating element impregnated with vitreous carbon for a furnace for drawing optical fibers
AU734347B2 (en) * 1997-10-31 2001-06-14 Corning Incorporated Apparatus and method for drawing waveguide fibers
DE19900375A1 (en) * 1999-01-08 2000-07-13 Alcatel Sa Device for pulling a fiber
CA2370494C (en) 1999-05-10 2008-11-25 Pirelli & C. S.P.A. Method and induction furnace for drawing large diameter preforms to optical fibres
CN113929462B (en) * 2021-10-16 2022-08-09 上杭鑫昌龙实业有限公司 Optical fiber annealing pipe and preparation process thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312004A1 (en) * 1975-04-30 1976-12-17 Gouronnec Alain High temp. laboratory furnace - using graphite heating elements in separate refractory tubes under protective gas
US4030901A (en) * 1976-07-19 1977-06-21 Bell Telephone Laboratories, Incorporated Method for drawing fibers
FR2339148A1 (en) * 1976-01-22 1977-08-19 Comp Generale Electricite HIGH FREQUENCY ELECTRIC OVEN
FR2340519A1 (en) * 1976-02-06 1977-09-02 France Etat Open:ended tubular high temperature furnace - with inert gas curtain protecting carbon heater element
FR2342619A1 (en) * 1976-02-25 1977-09-23 Physique Appliquee Ind Induction furnace for oxidation - uses radiation from steel rod to preheat zircon tube to temp. adequate for inductive coupling
FR2368677A2 (en) * 1976-10-19 1978-05-19 France Etat High temp. induction furnace - with graphite heating element pierced with several heating chamber borings, used esp. for prodn. of optical fibres

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549847A (en) * 1967-04-18 1970-12-22 Gen Electric Graphite susceptor
FR2055893A5 (en) * 1969-08-05 1971-05-14 Lorraine Carbone
JPS4946478B1 (en) * 1970-07-27 1974-12-10
DE2352613A1 (en) * 1973-10-19 1975-05-15 Nath Guenther Fibre pulling furnace - has pulling weight suspended in viscous fluid and heating input control by pulling speed
DE2451969C2 (en) * 1974-10-30 1976-11-08 Aerospace Corp PROCESS FOR GLAZING WORKPIECES MADE OF CERAMIC, CHARCOAL OR CARBON
US4101300A (en) * 1975-11-27 1978-07-18 Hitachi, Ltd. Method and apparatus for drawing optical fiber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312004A1 (en) * 1975-04-30 1976-12-17 Gouronnec Alain High temp. laboratory furnace - using graphite heating elements in separate refractory tubes under protective gas
FR2339148A1 (en) * 1976-01-22 1977-08-19 Comp Generale Electricite HIGH FREQUENCY ELECTRIC OVEN
FR2340519A1 (en) * 1976-02-06 1977-09-02 France Etat Open:ended tubular high temperature furnace - with inert gas curtain protecting carbon heater element
FR2342619A1 (en) * 1976-02-25 1977-09-23 Physique Appliquee Ind Induction furnace for oxidation - uses radiation from steel rod to preheat zircon tube to temp. adequate for inductive coupling
US4030901A (en) * 1976-07-19 1977-06-21 Bell Telephone Laboratories, Incorporated Method for drawing fibers
FR2368677A2 (en) * 1976-10-19 1978-05-19 France Etat High temp. induction furnace - with graphite heating element pierced with several heating chamber borings, used esp. for prodn. of optical fibres

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463827A1 (en) * 1979-08-21 1981-02-27 Toho Beslon Co APPARATUS FOR THE PRODUCTION OF GRAPHITE FIBERS
EP0110899A1 (en) * 1982-05-28 1984-06-20 Western Electric Co Modified zirconia induction furnace.
EP0110899A4 (en) * 1982-05-28 1984-09-28 Western Electric Co Modified zirconia induction furnace.
FR2532866A1 (en) * 1982-09-13 1984-03-16 Pont A Mousson CHENAL CASTING INDUCTION HEATED
EP0103220A1 (en) * 1982-09-13 1984-03-21 Pont-A-Mousson S.A. Casting channel with induction heating
FR2587502A1 (en) * 1985-09-19 1987-03-20 Centre Nat Rech Scient Apparatus enabling optical fibres to be melted and drawn, especially for the manufacture of couplers
EP0302121A1 (en) * 1987-02-16 1989-02-08 Sumitomo Electric Industries Limited Heating furnace for glass materials for optical fiber and method of manufacturing same
EP0302121A4 (en) * 1987-02-16 1989-06-21 Sumitomo Electric Industries Heating furnace for glass materials for optical fiber and method of manufacturing same.
US4969941A (en) * 1987-02-16 1990-11-13 Sumitomo Electric Industries, Ltd. Furnace for heating glass preform for optical fiber and method for producing glass preform
EP0542724A2 (en) * 1987-02-16 1993-05-19 Sumitomo Electric Industries Limited Furnace for heating glass preform for optical fiber and method for producing glass preform
EP0542724A3 (en) * 1987-02-16 1993-06-09 Sumitomo Electric Industries Limited Furnace for heating glass preform for optical fiber and method for producing glass preform

Also Published As

Publication number Publication date
FR2401103B1 (en) 1982-12-17
GB1575299A (en) 1980-09-17
DE2818550A1 (en) 1979-03-15
CA1101164A (en) 1981-05-19
DE2818550C2 (en) 1990-03-29

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