KR950017783A - 광파이버용 실리카 글래스 모재의 제조방법 - Google Patents

광파이버용 실리카 글래스 모재의 제조방법 Download PDF

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Publication number
KR950017783A
KR950017783A KR1019940038062A KR19940038062A KR950017783A KR 950017783 A KR950017783 A KR 950017783A KR 1019940038062 A KR1019940038062 A KR 1019940038062A KR 19940038062 A KR19940038062 A KR 19940038062A KR 950017783 A KR950017783 A KR 950017783A
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KR
South Korea
Prior art keywords
base material
optical fiber
silica glass
refractive index
dλo
Prior art date
Application number
KR1019940038062A
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English (en)
Other versions
KR100255409B1 (ko
Inventor
히로시 오야마다
고 오기노
히데오 히라사와
Original Assignee
가나까와 지히로
신에쓰가가꾸고오교 가부시끼가이샤
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Application filed by 가나까와 지히로, 신에쓰가가꾸고오교 가부시끼가이샤 filed Critical 가나까와 지히로
Publication of KR950017783A publication Critical patent/KR950017783A/ko
Application granted granted Critical
Publication of KR100255409B1 publication Critical patent/KR100255409B1/ko

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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
    • 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]
    • 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
    • C03B2203/22—Radial profile of refractive index, composition or softening point
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/36—Dispersion modified fibres, e.g. wavelength or polarisation shifted, flattened or compensating fibres (DSF, DFF, DCF)
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/70—Control measures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • G02B6/02247—Dispersion varying along the longitudinal direction, e.g. dispersion managed fibre

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

Abstract

센터코어와 사이드코어로 구성된 1차 모재의 외주에 외부증착하므로써 2차 모재의 클래딩층을 완성하는 광파이버의 선행재로서의 계단-지수 실리카 글래카 글래스 모재의 제조방법에서, 클래딩층을 위한 외부 증착을 1차 모재의 직경대 2차 모재의 직경의 비를 k, 2차 모재를 선인하여 얻어진 광파이버의 영분산 파장(nm)을 λo, 미리 1차 모재의 굴절을 분포에 의거하여 λo와 k사이의 함수의 미분을 dλo/dk라 할때, 부등식 |dλo/dk| ≤500nm를 만족하도록 수행하는 것에 의해 개선이 제안된다. 이런식으로 외부증착을 수행시킬 때, 모재를 선인하여 제조한 광파이버의 영분산 파장의 균일성에 큰 개선이 얻어진다.

Description

광파이버용 실리카 글래스 모재의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (1)

  1. 실리카 글래스의 센터코어 외주에 센터코어를 만드는 실리카 글래스의 굴절율보다 작은 굴절율의 실리카 글래스로 만들어진 사이드코어를 형성하여 직경 D1을 갖는 1차 모재로 하는 공정과, 상기 1차 모재의 외주에 사이드코어를 만드는 실리카 글래스의 굴절율보다 작은 굴절율의 실리카 글래스로 만들어진 클래딩층을 형성하여 직경 D2를 갖는 2차 모재를 하는 공정으로 이루어지는 광파이버용 실리카 글래스 모재의 제조방법에 있어서, D1/D2의 비를 k, 2차 모재를 선인하여 얻어진 광파이버의 영분산 파장(nm)을 λo, 미리 1차 모재의 굴정율 분포에 의거하여 λo와 k 사이의 함수의 미분을 dλo/dk라 할때, 부등식 |dλo/dk| ≤500nm를 만족하도록 클래드층을 형성하는 것을 특징으로 하는 광파이버용 실리카 글래스 모재의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940038062A 1993-12-28 1994-12-28 광파이버용 실리카 글래스 모재의 제조방법 KR100255409B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP93-334420 1993-12-28
JP5334420A JP2965236B2 (ja) 1993-12-28 1993-12-28 光ファイバ用母材の製造方法

Publications (2)

Publication Number Publication Date
KR950017783A true KR950017783A (ko) 1995-07-20
KR100255409B1 KR100255409B1 (ko) 2000-05-01

Family

ID=18277179

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940038062A KR100255409B1 (ko) 1993-12-28 1994-12-28 광파이버용 실리카 글래스 모재의 제조방법

Country Status (4)

Country Link
US (1) US5683486A (ko)
JP (1) JP2965236B2 (ko)
KR (1) KR100255409B1 (ko)
CN (1) CN1051293C (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5940567A (en) * 1998-02-20 1999-08-17 Photon-X, Inc. Optical fibers having an inner core and an outer core
CN1139823C (zh) * 1998-11-02 2004-02-25 住友电气工业株式会社 单模光纤及其制造方法
US6532773B1 (en) * 2000-06-30 2003-03-18 Fitel Usa Corp. Method of modifying the index profile of an optical fiber preform in the longitudinal direction
US6490398B2 (en) * 2001-02-21 2002-12-03 Fitel Usa Corp. Dispersion-compensating fiber having a high figure of merit
CA2371285A1 (en) * 2001-03-16 2002-09-16 The Furukawa Electric Co., Ltd Optical fiber and wavelength division multiplex transmission line
WO2006083354A2 (en) * 2004-11-18 2006-08-10 Nextrom Holding, S.A. Low-water optical fiber preform and process for making it
US20130025326A1 (en) * 2011-07-29 2013-01-31 Dabby Franklin W Methods for manufacturing low water peak optical waveguide
ES2615388B1 (es) * 2015-11-06 2018-03-16 Universidad De Vigo Procedimiento y dispositivo para la generación de fibras continuas de diámetro nanométrico, así como fibras nanométricas generadas
JP2021018337A (ja) * 2019-07-22 2021-02-15 住友電気工業株式会社 シングルモード光ファイバおよびシングルモード光ファイバの製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US452942A (en) * 1891-05-26 Air-brake system
US4243298A (en) * 1978-10-06 1981-01-06 International Telephone And Telegraph Corporation High-strength optical preforms and fibers with thin, high-compression outer layers
US4260221A (en) * 1979-03-16 1981-04-07 Bell Telephone Laboratories, Incorporated Multimode fiber with z-dependent index profile
FR2502345B1 (ko) * 1981-03-17 1985-01-04 Thomson Csf
US4597785A (en) * 1984-08-01 1986-07-01 Itt Corporation Method of and apparatus for making optical preforms with a predetermined cladding/core ratio
JPS6252508A (ja) * 1985-09-02 1987-03-07 Nippon Telegr & Teleph Corp <Ntt> 光フアイバ
US5241615A (en) * 1992-06-18 1993-08-31 Corning Incorporated Optical waveguide fiber with very thin titania-silica outer cladding layer
US5314517A (en) * 1992-12-31 1994-05-24 Corning Incorporated Method controlling the draw rate in the drawing of a glass feedstock
US5278931A (en) * 1992-12-31 1994-01-11 Corning Incorporated Low bend loss singlemode optical waveguide fiber

Also Published As

Publication number Publication date
CN1051293C (zh) 2000-04-12
JPH07187696A (ja) 1995-07-25
CN1108222A (zh) 1995-09-13
KR100255409B1 (ko) 2000-05-01
JP2965236B2 (ja) 1999-10-18
US5683486A (en) 1997-11-04

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