JPS57118042A - Manufacture of preform rod for optical fiber - Google Patents

Manufacture of preform rod for optical fiber

Info

Publication number
JPS57118042A
JPS57118042A JP341281A JP341281A JPS57118042A JP S57118042 A JPS57118042 A JP S57118042A JP 341281 A JP341281 A JP 341281A JP 341281 A JP341281 A JP 341281A JP S57118042 A JPS57118042 A JP S57118042A
Authority
JP
Japan
Prior art keywords
rod
tube
diameter
glass
spacer
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
JP341281A
Other languages
Japanese (ja)
Inventor
Toshio Iwamoto
Toshitaka Gotou
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable Co
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP341281A priority Critical patent/JPS57118042A/en
Publication of JPS57118042A publication Critical patent/JPS57118042A/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

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)
  • Glass Melting And Manufacturing (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To coaxially put a glass rod in a glass tube different from the rod in light refractive index without damaging the rod close to the tube by attaching centering spacers each supporting the rod to the rod and the tube. CONSTITUTION:An end 4 of a glss tube 2 and an end 6 of a glass rod 3 are grasped with devices 5, 7, respectively. A female centering spacer 9 having a tapered hole 12 reduced in diameter from a larger inside diameter than the diameter of the rod to a smaller inside diameter in the direction 11 at the opposite side to a rod end 10 is inserted in the tube end 2. On the other hand, a male centering spacer 14 having a tapered face increased in diameter from a smaller outside diameter than the inside diameter of the tube to a larger outside diameter in the reverse direction to the direction 11 at the opposite side to a tube end 13 is attached to a part close to the grasped rod part. By moving the device 7 in the direction 11, the rod 3 is put in the tube 2. At this time, the rod ends 10, 6 are guided to coaxial positions to the tube 2 with the hole 12 and the spacer 14, respectively. The tube 2 and the rod 3 are then softened by heating while rotating, and the tube 2 is reduced in diameter and united with the rod 3.
JP341281A 1981-01-13 1981-01-13 Manufacture of preform rod for optical fiber Pending JPS57118042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP341281A JPS57118042A (en) 1981-01-13 1981-01-13 Manufacture of preform rod for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP341281A JPS57118042A (en) 1981-01-13 1981-01-13 Manufacture of preform rod for optical fiber

Publications (1)

Publication Number Publication Date
JPS57118042A true JPS57118042A (en) 1982-07-22

Family

ID=11556661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP341281A Pending JPS57118042A (en) 1981-01-13 1981-01-13 Manufacture of preform rod for optical fiber

Country Status (1)

Country Link
JP (1) JPS57118042A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720223U (en) * 1983-12-29 1995-04-11 エロワ エージー Tightening device
WO1999009437A1 (en) * 1997-08-19 1999-02-25 Pirelli Cavi E Sistemi S.P.A. Method of and apparatus for manufacturing an optical fiber preform
EP1182173A1 (en) * 2000-08-08 2002-02-27 Lucent Technologies Inc. Preform for optical fibres and methods for making the preform and optical fibres
JP2002179434A (en) * 2000-12-08 2002-06-26 Sumitomo Electric Ind Ltd Method for manufacturing optical fiber preform, optical fiber preform and optical fiber
WO2003095379A1 (en) * 2002-05-09 2003-11-20 The Furukawa Electric Co., Ltd. Method of manufacturing optical fiber
KR20040001169A (en) * 2002-06-27 2004-01-07 삼성전자주식회사 Over jacketing equipment for optical fiber preform
EP1426339A1 (en) * 2002-12-04 2004-06-09 FITEL USA CORPORATION (a Delaware Corporation) Rod-in-tube optical fibre preform and method of drawing it
US6836605B2 (en) 2001-11-12 2004-12-28 Sumitomo Electric Industries, Ltd. Optical fiber preform, production method thereof, and optical fiber produced from the preform
JP2010111554A (en) * 2008-11-10 2010-05-20 Fujikura Ltd Method for producing preform for optical fiber, and method for producing optical fiber
WO2023090359A1 (en) * 2021-11-22 2023-05-25 住友電気工業株式会社 Rod insertion jig and method for producing multicore optical fiber base material

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720223U (en) * 1983-12-29 1995-04-11 エロワ エージー Tightening device
WO1999009437A1 (en) * 1997-08-19 1999-02-25 Pirelli Cavi E Sistemi S.P.A. Method of and apparatus for manufacturing an optical fiber preform
EP1182173A1 (en) * 2000-08-08 2002-02-27 Lucent Technologies Inc. Preform for optical fibres and methods for making the preform and optical fibres
US6987917B2 (en) 2000-12-08 2006-01-17 Sumitomo Electric Industries, Ltd. Optical fiber preform producing method, optical fiber preform, and optical fiber
WO2002049974A1 (en) * 2000-12-08 2002-06-27 Sumitomo Electric Industries, Ltd. Optical fiber preform producing method, optical fiber preform, and optical fiber
JP2002179434A (en) * 2000-12-08 2002-06-26 Sumitomo Electric Ind Ltd Method for manufacturing optical fiber preform, optical fiber preform and optical fiber
US6836605B2 (en) 2001-11-12 2004-12-28 Sumitomo Electric Industries, Ltd. Optical fiber preform, production method thereof, and optical fiber produced from the preform
WO2003095379A1 (en) * 2002-05-09 2003-11-20 The Furukawa Electric Co., Ltd. Method of manufacturing optical fiber
CN100363285C (en) * 2002-05-09 2008-01-23 古河电气工业株式会社 Method of manufacturing optical fiber
CN102408191A (en) * 2002-05-09 2012-04-11 古河电气工业株式会社 Method of manufacturing optical fiber
KR20040001169A (en) * 2002-06-27 2004-01-07 삼성전자주식회사 Over jacketing equipment for optical fiber preform
EP1426339A1 (en) * 2002-12-04 2004-06-09 FITEL USA CORPORATION (a Delaware Corporation) Rod-in-tube optical fibre preform and method of drawing it
JP2010111554A (en) * 2008-11-10 2010-05-20 Fujikura Ltd Method for producing preform for optical fiber, and method for producing optical fiber
WO2023090359A1 (en) * 2021-11-22 2023-05-25 住友電気工業株式会社 Rod insertion jig and method for producing multicore optical fiber base material

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