KR950017783A - 광파이버용 실리카 글래스 모재의 제조방법 - Google Patents
광파이버용 실리카 글래스 모재의 제조방법 Download PDFInfo
- 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
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
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (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.
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)
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)
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 |
-
1993
- 1993-12-28 JP JP5334420A patent/JP2965236B2/ja not_active Expired - Fee Related
-
1994
- 1994-12-19 US US08/358,529 patent/US5683486A/en not_active Expired - Lifetime
- 1994-12-28 KR KR1019940038062A patent/KR100255409B1/ko not_active IP Right Cessation
- 1994-12-28 CN CN94113485A patent/CN1051293C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1108222A (zh) | 1995-09-13 |
JPH07187696A (ja) | 1995-07-25 |
JP2965236B2 (ja) | 1999-10-18 |
US5683486A (en) | 1997-11-04 |
CN1051293C (zh) | 2000-04-12 |
KR100255409B1 (ko) | 2000-05-01 |
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