JPS5614433A - Manufacture of optical fiber base material - Google Patents

Manufacture of optical fiber base material

Info

Publication number
JPS5614433A
JPS5614433A JP8966979A JP8966979A JPS5614433A JP S5614433 A JPS5614433 A JP S5614433A JP 8966979 A JP8966979 A JP 8966979A JP 8966979 A JP8966979 A JP 8966979A JP S5614433 A JPS5614433 A JP S5614433A
Authority
JP
Japan
Prior art keywords
tube
base material
longitudinal direction
changed
reaction tube
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
JP8966979A
Other languages
Japanese (ja)
Inventor
Kiyoshi Rokushiya
Mitsuhiro Motegi
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 JP8966979A priority Critical patent/JPS5614433A/en
Publication of JPS5614433A publication Critical patent/JPS5614433A/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
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01884—Means for supporting, rotating and translating tubes or rods being formed, e.g. lathes
    • C03B37/01892—Deposition substrates, e.g. tubes, mandrels
    • 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
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
    • 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
    • C03B2203/18—Axial perturbations, e.g. in refractive index or composition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General 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 an optical fiber base material having a refractive index distribution which is changed periodically by using a glass tube which is changed in outside diameter so that the thickness of the wall of the reaction tube is changed with a specified period in the longitudinal direction. CONSTITUTION:Reaction tube 1 is periodically provided with thin-walled portions A and thick-walled portions B in the longitudinal direction. Gases of halogen compounds of Si, Ge, P, B, etc. as glass starting materials are introduced into rotating reaction tube 1 with oxygen as carrier gas, and glass film 5 for a core is formed by local heating with heating source 4 moving in the longitudinal direction of tube 1. Since portions A, B are made different from each other in temp. by the heating, the amount of a refractive index controlling dopant in film 5 deposited on the inner wall of tube 1 changes periodically in proportion to the temp. change. The amount of the dopant is controlled every deposited layer, and the outer protrusions are cut and polished to obtain a straight rodlike base material.
JP8966979A 1979-07-13 1979-07-13 Manufacture of optical fiber base material Pending JPS5614433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8966979A JPS5614433A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8966979A JPS5614433A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber base material

Publications (1)

Publication Number Publication Date
JPS5614433A true JPS5614433A (en) 1981-02-12

Family

ID=13977142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8966979A Pending JPS5614433A (en) 1979-07-13 1979-07-13 Manufacture of optical fiber base material

Country Status (1)

Country Link
JP (1) JPS5614433A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6190876A (en) * 1984-10-08 1986-05-09 Hiroshi Ishizuka Super abrasive grain electrodeposition circular saw
JPH0586425U (en) * 1991-08-12 1993-11-22 哲造 山下 Circular saw for metal cutting
EP1116697A2 (en) * 2000-01-14 2001-07-18 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6190876A (en) * 1984-10-08 1986-05-09 Hiroshi Ishizuka Super abrasive grain electrodeposition circular saw
JPH0586425U (en) * 1991-08-12 1993-11-22 哲造 山下 Circular saw for metal cutting
EP1116697A2 (en) * 2000-01-14 2001-07-18 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition
EP1116697A3 (en) * 2000-01-14 2002-06-26 Samsung Electronics Co., Ltd. Preform for dispersion-managed optical fibre and method of fabricating the preform by modified chemical vapour deposition
US6523368B2 (en) 2000-01-14 2003-02-25 Samsung Electronics Co., Ltd Dispersion-managed fiber preform and fabricating method thereof by MCVD

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