KR950017783A - 광파이버용 실리카 글래스 모재의 제조방법 - Google Patents

광파이버용 실리카 글래스 모재의 제조방법 Download PDF

Info

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
Authority
KR
South Korea
Prior art keywords
base material
optical fiber
silica glass
refractive index
dλo
Prior art date
Application number
KR1019940038062A
Other languages
English (en)
Other versions
KR100255409B1 (ko
Inventor
히로시 오야마다
고 오기노
히데오 히라사와
Original Assignee
가나까와 지히로
신에쓰가가꾸고오교 가부시끼가이샤
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 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

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
    • 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

Landscapes

  • 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
JP5334420A JP2965236B2 (ja) 1993-12-28 1993-12-28 光ファイバ用母材の製造方法
JP93-334420 1993-12-28

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
AU768742B2 (en) * 1998-11-02 2004-01-08 Sumitomo Electric Industries, Ltd. Single-mode optical fiber and its production method
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
US5278931A (en) * 1992-12-31 1994-01-11 Corning Incorporated Low bend loss singlemode optical waveguide fiber
US5314517A (en) * 1992-12-31 1994-05-24 Corning Incorporated Method controlling the draw rate in the drawing of a glass feedstock

Also Published As

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

Similar Documents

Publication Publication Date Title
TW342460B (en) A dispersion shift fiber
KR910003411A (ko) 단일모드, 단일편광 광섬유
TW325523B (en) Refractive index gradient lens
CA2170815A1 (en) Dispersion compensating optical fiber
JPH07261048A (ja) 分散補償ファイバ
JPH08234036A (ja) シングルモ−ド光導波路ファイバ
ES8103389A1 (es) Un metodo de producir una preforma para un filamento optico de gran anchura de banda
JPS6343107A (ja) 光ファイバ
CA2028525A1 (en) Achromatic fiber optic coupler
WO2002088803A3 (en) Dispersion shifted fiber having low dispersion slope
CA2253579A1 (en) Single mode optical fiber having multi-step core structure and method of fabricating the same
KR950017783A (ko) 광파이버용 실리카 글래스 모재의 제조방법
DE59912867D1 (de) Optische single-mode-lichtleitfaser
EP0851247A3 (en) Dispersion-shifted optical fibre and method of manufacturing the same
CA1246363A (en) Low dispersion, low-loss single-mode optical waveguide
KR910000556A (ko) 밀폐코팅된 광학섬유와 그의 제조방법
JPH10501633A (ja) 光ウェーブガイド
EP0391742A3 (en) Image fiber, image fiber preform, and manufacturing processes thereof
GB2306955B (en) Method of fabricating dispersion shifted optical fibre with smooth annular ring refractive index profile
KR960012584A (ko) 광 도파관 브래그 반사기 및 개선된 광 도파관 브래그 반사기 제조 방법
WO2000026709A1 (fr) Fibre optique a mode unique et procede de production de ladite fibre
ES470963A1 (es) Una fibra optica de vidrio con resistencia a la traccion me-jorada y un metodo para la fabricacion de dicha fibra optica
EP0844501A3 (en) Plastic optical fibre with two cores
CN1391658A (zh) 低色散斜率负色散光纤
WO2002014919A3 (en) Optical fiber with large effective area, low dispersion and low dispersion slope

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130118

Year of fee payment: 14

FPAY Annual fee payment

Payment date: 20140117

Year of fee payment: 15

EXPY Expiration of term