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FR2383137A1 - Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod. - Google Patents

Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod.

Info

Publication number
FR2383137A1
FR2383137A1 FR7706896A FR7706896A FR2383137A1 FR 2383137 A1 FR2383137 A1 FR 2383137A1 FR 7706896 A FR7706896 A FR 7706896A FR 7706896 A FR7706896 A FR 7706896A FR 2383137 A1 FR2383137 A1 FR 2383137A1
Authority
FR
France
Prior art keywords
furnace
optical fibre
prod
quality
feed control
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
FR7706896A
Other languages
French (fr)
Other versions
FR2383137B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7706896A priority Critical patent/FR2383137A1/en
Publication of FR2383137A1 publication Critical patent/FR2383137A1/en
Application granted granted Critical
Publication of FR2383137B1 publication Critical patent/FR2383137B1/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
    • C03B37/0253—Controlling or regulating
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/27—Control of temperature characterised by the use of electric means with sensing element responsive to radiation
    • 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
    • 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
    • C03B2205/72—Controlling or measuring the draw furnace temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (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

An installation for drawing an optical fibre from a premoulding, esp. of silicon oxide, comprises a mechanism for lowering the premoulding, a, for pref. induction furnace with a reverberatory chamber and a capstan drum for carrying out the drawing down of the fibre. An optical pyrometer or a thermoelectric couple is fitted for the regulation of the temp. of the furnace. In addn., for the control of the speed at which the premoulding is allowed to descent, two devices are provided. The first of these detects a predetermined fraction of the radiation emitted by the walls of the chamber inside the furnace. The second monitors the deformation of the preform by similarly detecting a further fraction of the radiation emitted inside the furnace.
FR7706896A 1977-03-09 1977-03-09 Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod. Granted FR2383137A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7706896A FR2383137A1 (en) 1977-03-09 1977-03-09 Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7706896A FR2383137A1 (en) 1977-03-09 1977-03-09 Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod.

Publications (2)

Publication Number Publication Date
FR2383137A1 true FR2383137A1 (en) 1978-10-06
FR2383137B1 FR2383137B1 (en) 1979-09-07

Family

ID=9187790

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7706896A Granted FR2383137A1 (en) 1977-03-09 1977-03-09 Furnace temp. and preform feed control - for optical fibre drawing ensuring consistent dimensions and quality of prod.

Country Status (1)

Country Link
FR (1) FR2383137A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002139A1 (en) * 1979-03-29 1980-10-16 A Regreny Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line
FR2464925A1 (en) * 1979-09-06 1981-03-20 Thomson Csf METHOD FOR CONTROLLING THE DRAWING OF AN OPTICAL FIBER FROM A GLASS PREFORM AND SYSTEM FOR IMPLEMENTING SUCH A METHOD
EP0030542A4 (en) * 1979-06-11 1981-10-13 Western Electric Co Method for monitoring optical fiber processing.
US5942019A (en) * 1997-04-11 1999-08-24 Sumitomo Electric Industries, Ltd. Elongating apparatus and method for glass preform and furnace body for elongating apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002139A1 (en) * 1979-03-29 1980-10-16 A Regreny Apparatus for the multiple drawing of fibers allowing the simultaneous drawing of a plurality of optical fibers,then the multifiber cabling on line
DE3041446C2 (en) * 1979-03-29 1989-03-02 Alain Lannion Fr Gouronnec
EP0030542A4 (en) * 1979-06-11 1981-10-13 Western Electric Co Method for monitoring optical fiber processing.
FR2464925A1 (en) * 1979-09-06 1981-03-20 Thomson Csf METHOD FOR CONTROLLING THE DRAWING OF AN OPTICAL FIBER FROM A GLASS PREFORM AND SYSTEM FOR IMPLEMENTING SUCH A METHOD
EP0025736A1 (en) * 1979-09-06 1981-03-25 Thomson-Csf Process and apparatus for regulating the drawing of an optical fibre from a preform
US5942019A (en) * 1997-04-11 1999-08-24 Sumitomo Electric Industries, Ltd. Elongating apparatus and method for glass preform and furnace body for elongating apparatus

Also Published As

Publication number Publication date
FR2383137B1 (en) 1979-09-07

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Legal Events

Date Code Title Description
TP Transmission of property
CL Concession to grant licences
TP Transmission of property