KR880000806A - 분산 시프트싱글모우드 광파이버 및 그 제조방법 - Google Patents

분산 시프트싱글모우드 광파이버 및 그 제조방법 Download PDF

Info

Publication number
KR880000806A
KR880000806A KR870005307A KR870005307A KR880000806A KR 880000806 A KR880000806 A KR 880000806A KR 870005307 A KR870005307 A KR 870005307A KR 870005307 A KR870005307 A KR 870005307A KR 880000806 A KR880000806 A KR 880000806A
Authority
KR
South Korea
Prior art keywords
sio
core
clad
heat
geo
Prior art date
Application number
KR870005307A
Other languages
English (en)
Other versions
KR900003449B1 (ko
Inventor
히로오 가나모리
히로시 요꼬다
고오타로오 다나까
요오이씨 이시구로
마사히로 다까기
히로시 스가누마
마사유끼 시게마쓰
Original Assignee
나까하라 쓰네오
스미도모덴기 고오교오 가부시기가이샤
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
Priority claimed from JP61133762A external-priority patent/JPS62292647A/ja
Priority claimed from JP62050276A external-priority patent/JPH0820574B2/ja
Priority claimed from JP62052089A external-priority patent/JPS63222042A/ja
Application filed by 나까하라 쓰네오, 스미도모덴기 고오교오 가부시기가이샤 filed Critical 나까하라 쓰네오
Publication of KR880000806A publication Critical patent/KR880000806A/ko
Application granted granted Critical
Publication of KR900003449B1 publication Critical patent/KR900003449B1/ko

Links

Classifications

    • 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
    • G02B6/02276—Dispersion shifted fibres, i.e. zero dispersion at 1550 nm
    • 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
    • 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
    • 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
    • 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]
    • C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • 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]
    • C03B37/01466—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
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/10—Non-chemical treatment
    • C03B37/12—Non-chemical treatment of fibres or filaments during winding up
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/04—Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045—Silica-containing oxide glass compositions
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00—Type of glass produced
    • C03B2201/06—Doped silica-based glasses
    • C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/12—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
    • 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)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S65/00—Glass manufacturing
    • Y10S65/15—Nonoxygen containing chalogenides
    • Y10S65/16—Optical filament or fiber treatment with fluorine or incorporating fluorine in final product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S65/00—Glass manufacturing
    • Y10S65/90—Drying, dehydration, minimizing oh groups

Abstract

내용 없음

Description

분산 시프트싱글모우드 광파이버 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 종래의 굴절율분포의 구조예를 도시한 도면. 제3도는 본 발명의 파이버를 제조하는 실시태양의 설명도로서. 제11도는 본 발명의 제2실시예에 있어서의 코어용 스우트체의 제작방법의 설명도.

Claims (5)

  1. 내측코어가 Ge-SiO2, 외측코어가 F-SiO2, 클래드부가 F-SiO2로 이루어져 있고, 계단형상 굴절율 분포를 가진 것을 특징으로 하는 분산 시프트싱글모우드 광파이버
  2. 제1항에 있어서, 내측코어가 GeO2-F-SiO2로 이루어져서, 계단형상 굴절율 분포를 가진 것을 특징으로 하는 분산 시프트싱글모우드 광파이버
  3. GeO2-SiO2로 이루어진 내측코어용 유리체를, F-SiO2로 이루어진 파이프형상의 외측코어용 유리체속에 삽입해서 가열일체화 함으로서, 내측코어와 외측코어로 이루어진 복합체(Ⅰ)를 형성하는 공정과, 이 복합체(Ⅰ)를 F-SiO2로 이루어진 파이프형상의 클래드부용 유리체의 중공부내에 삽입해서 가열일체화 함으로서, 내측코어, 외측코어 및 클래드부로 이루어진 복합체(Ⅱ)를 형성하는 공정으로 다단형상 굴절율분포를 가진 것을 특징으로 하는 분산 시프트싱글모우드 광파이버의 제조방법
  4. VAD법에 의해서 복수의 유리미립자 합성용 버어너를 사용해서, GeO2를 첨가한 SiO2로 이루어진 내측코어와 순수 SiO2로 이루어진 외측코어를 가진 코어용 스우트체를 제조한후, 이 코어용 스우트체를, F를 함유하는 분위기 속에서 가열하고, 이 코어용 스우트체에 F를 첨가함과 동시에 가열탈수처리 및 가열투명화처리를 행함으로서 코어용 투명유리체를 제작하는 공정과, VAD법에 의해서 제작한 순수 SiO2로 이루어진 클래드용 스우트체를, F를 함유하는 분위기 속에서 가열하고, 이 클래드용 스우트체에 F를 첨가함과 동시에 가열탈수처리 및 가열투명화처리를 행함으로서 클래드용 투명유리체를 제작한 후, 이 클래드용 투명유리체의 중앙부를 천공하는 공정과, 이 코어용 유리체를 클래드용 유리체의 중공부에 삽입해서 양자를 가열일체화 하는 공정을 가진 것을 특징으로 하는 내측코어가 GeO2-F-SiO2, 외측코어가 F-SiO2, 클래드부가 F-SiO2로 이루어진 계단형상의 굴절율분포를 가진 분산 시프트싱글모우드 광파이버의 제조방법
  5. VAD법에 의해서 GeO2를 함유하는 SiO2로 이루어진 중앙층과, 이 중앙층을 둘러싸는 실질적으로 순수한 SiO2로 이루어진 외층부로된 스우트체를 제작하고, 이 스우트체를 탈수 및 소결한 투명유리체를, H원자를 함유하지 않는 분위기속에서 연신하여 중앙부의 GeO2함유부와 그 외측의 실질적으로 순수한 SiO2로 이루어진 부분으로 이루어진 2중 구조를 가진 코어용 모재를 작성하는 공정과, VAD법에 의해서 실질적으로 순수 SiO2로 이루어진 스우트체를 제작하고, 이 스우트체를 불소를 함유하는 분위기 속에서 고온으로 가열처리해서 불소를 스우트체에 첨가하고, 이것을 소결함으로서 얻은 투명유리체의 중앙부를 천설하여, 필요에 따라서 연신해서 불소를 함유한 SiO2로 이루어진 원통형상의 클래드용 모재를 제작하는 공정관이 코어용 모재를 이 클래드용 모재속에 삽입하여 양자를 가열해서 일체화하는 공정을 포함하는 것을 특징으로 하는 분산 시프트싱글모우드 광파이버의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870005307A 1986-06-11 1987-05-28 분산 시프트싱글모우드 광파이버 및 그 제조방법 KR900003449B1 (ko)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP61133762A JPS62292647A (ja) 1986-06-11 1986-06-11 分散シフトシングルモ−ド光フアイバの製造方法
JP61-133762 1986-06-11
JP133762 1986-06-11
JP50276 1987-03-06
JP62-50279 1987-03-06
JP62050276A JPH0820574B2 (ja) 1987-03-06 1987-03-06 分散シフトフアイバ及びその製造方法
JP52089 1987-03-09
JP62052089A JPS63222042A (ja) 1987-03-09 1987-03-09 光フアイバ用母材及びその製造方法
JP62-50289 1987-03-09

Publications (2)

Publication Number Publication Date
KR880000806A true KR880000806A (ko) 1988-03-29
KR900003449B1 KR900003449B1 (ko) 1990-05-19

Family

ID=27293907

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870005307A KR900003449B1 (ko) 1986-06-11 1987-05-28 분산 시프트싱글모우드 광파이버 및 그 제조방법

Country Status (6)

Country Link
US (1) US4822399A (ko)
EP (1) EP0249230B1 (ko)
KR (1) KR900003449B1 (ko)
AU (1) AU592875B2 (ko)
CA (1) CA1294438C (ko)
DE (1) DE3762609D1 (ko)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5028246A (en) * 1986-02-03 1991-07-02 Ensign-Bickford Optical Technologies, Inc. Methods of making optical waveguides
DE3911745A1 (de) * 1989-04-11 1990-10-25 Philips Patentverwaltung Verfahren zur herstellung von glaskoerpern mit bereichen unterschiedlicher optischer brechung
KR970000903B1 (ko) * 1989-06-13 1997-01-21 나카하라 츠네오 밀폐코팅된 광학섬유와 그의 제조방법
DE3921086A1 (de) * 1989-06-28 1991-01-03 Kabelmetal Electro Gmbh Verfahren zur herstellung von lichtwellenleitern mit aufschmelzen eines ueberwurfrohres auf eine roh-vorform
US5259856A (en) * 1989-09-06 1993-11-09 Sumitomo Electric Industrial, Ltd. Method of producing glass preform in furnace for heating glass
US5059230A (en) * 1990-01-22 1991-10-22 At&T Bell Laboratories Fabrication of doped filament optical fibers
US5261938A (en) * 1990-10-11 1993-11-16 Agency Of Industrial Science And Technology Process for producing rod glass having refractive index distribution
US5233621A (en) * 1991-06-27 1993-08-03 Intellectual Property Development Associates Of Connecticut, Inc. Second harmonic generation and self frequency doubling laser materials comprised of bulk germanosilicate and aluminosilicate glasses
US5253258A (en) * 1991-10-17 1993-10-12 Intellectual Property Development Associates Of Connecticut, Inc. Optically encoded phase matched second harmonic generation device and self frequency doubling laser material using semiconductor microcrystallite doped glasses
US5522003A (en) * 1993-03-02 1996-05-28 Ward; Robert M. Glass preform with deep radial gradient layer and method of manufacturing same
US5559921A (en) * 1994-06-24 1996-09-24 Sumitomo Electric Industries, Ltd. Single mode optical fiber
FR2724234B1 (fr) 1994-09-05 1997-01-03 Alcatel Fibres Optiques Fibre optique monomode a dispersion decalee
EP0716047A3 (en) * 1994-12-02 1996-10-09 Fibercore Inc Method and apparatus for making an optical fiber preform
US5835655A (en) 1995-01-26 1998-11-10 Corning Incorporated Large effective area waveguide fiber
US5641333A (en) * 1995-12-01 1997-06-24 Corning Incorporated Increasing the retention of Ge02 during production of glass articles
KR0153835B1 (ko) * 1995-11-07 1998-11-16 김광호 매끄러운 환상고리 굴절율 프로파일을 갖는 분산이동광섬유의 제조방법
US5649044A (en) * 1995-11-21 1997-07-15 Corning Incorporated Dispersion shifted optical waveguide
JPH09211249A (ja) * 1995-11-28 1997-08-15 Sumitomo Electric Ind Ltd シングルモード光ファイバ
TW342460B (en) * 1996-01-16 1998-10-11 Sumitomo Electric Industries A dispersion shift fiber
JP3369389B2 (ja) * 1996-02-08 2003-01-20 住友電気工業株式会社 分散シフト光ファイバ
US6535679B2 (en) * 1997-01-16 2003-03-18 Sumitomo Electric Industries, Ltd. Optical fiber and method of manufacturing the same
JPH10260330A (ja) 1997-03-18 1998-09-29 Furukawa Electric Co Ltd:The 分散シフト光ファイバ
US6131415A (en) * 1997-06-20 2000-10-17 Lucent Technologies Inc. Method of making a fiber having low loss at 1385 nm by cladding a VAD preform with a D/d<7.5
US6191854B1 (en) 1997-06-23 2001-02-20 Pirelli Cavi E Sistemi S.P.A. Optical telecommunications system
JP4159247B2 (ja) * 1997-08-19 2008-10-01 ピレリー・カビ・エ・システミ・ソチエタ・ペル・アツィオーニ 光ファイバの予成形体の製造方法及びその装置
CA2247970A1 (en) * 1997-10-29 1999-04-29 Corning Incorporated Method of making segmented core optical waveguide preforms
KR19990038607A (ko) 1997-11-06 1999-06-05 윤종용 다단계 코아 구조를 가지는 단일모드 광섬유
CN1125788C (zh) 1998-02-03 2003-10-29 住友电气工业株式会社 光纤母材的制造方法
US5940567A (en) * 1998-02-20 1999-08-17 Photon-X, Inc. Optical fibers having an inner core and an outer core
KR100333897B1 (ko) 1998-06-24 2002-07-31 광주과학기술원 스트레스이완된장주기광섬유격자
DE19852704A1 (de) 1998-11-16 2000-05-18 Heraeus Quarzglas Verfahren zur Herstellung einer Vorform für eine optische Faser und für die Durchführung des Verfahrens geeignetes Substratrohr
KR100306381B1 (ko) * 1998-12-10 2001-11-30 윤종용 증착튜브의응축및클로징을위한광섬유모재제조장치및그방법
US6243522B1 (en) * 1998-12-21 2001-06-05 Corning Incorporated Photonic crystal fiber
EP1061054A1 (en) * 1999-06-18 2000-12-20 Lucent Technologies Inc. Method of making optical fiber by a rod-in tube process and fiber made by the method
EP1242323B1 (en) * 1999-12-29 2017-02-22 Prysmian S.p.A. A method for producing a core rod to be used in a process for producing a final preform
CN1293008C (zh) * 2000-03-25 2007-01-03 赫罗伊斯·坦尼沃有限责任公司 用来生产用于光纤的预成型坯件的基底管和过程
CA2355823A1 (en) * 2000-08-28 2002-02-28 Sumitomo Electric Industries, Ltd. Optical fiber and method of making the same
JP2002160935A (ja) * 2000-09-12 2002-06-04 Furukawa Electric Co Ltd:The 光ファイバ母材
JP4742429B2 (ja) * 2001-02-19 2011-08-10 住友電気工業株式会社 ガラス微粒子堆積体の製造方法
NL1018338C2 (nl) * 2001-06-20 2002-12-30 Draka Fibre Technology Bv Optische vezel.
US6928841B2 (en) * 2002-05-10 2005-08-16 Furukawa Electric North America Inc Optical fiber preform manufacture using improved VAD
NL1020780C2 (nl) * 2002-06-06 2004-01-06 Draka Fibre Technology Bv Single mode optische vezel, alsmede optisch communicatiesysteem.
KR100472055B1 (ko) * 2002-10-10 2005-03-10 한국전자통신연구원 전송용 광섬유
US7991021B2 (en) * 2003-12-05 2011-08-02 Northrop Grumman Systems Corporation Multimode raman fiber device with mode discrimination
EP1547981A3 (en) * 2003-12-25 2011-07-06 Sumitomo Electric Industries, Ltd. Method of manufacturing fluorine doped silica glass article, preform and optical fiber and optical fiber made by the method
CN1317212C (zh) * 2004-04-29 2007-05-23 斯德莱特光学技术有限公司 一种在1380nm波长区域内低衰减光纤及其制备方法
EP1806599A4 (en) 2004-10-22 2010-09-22 Fujikura Ltd OPTICAL FIBER, TRANSMISSION SYSTEM AND MULTIWAVEN LENGTH TRANSMISSION SYSTEM
CN1847179B (zh) * 2005-04-13 2010-09-08 富通集团有限公司 一种光纤预制棒生产方法
US7805039B2 (en) * 2007-05-04 2010-09-28 Weatherford/Lamb, Inc. Single mode optical fiber with improved bend performance
JP2012188314A (ja) * 2011-03-10 2012-10-04 Shin-Etsu Chemical Co Ltd フッ素含有光ファイバ母材の製造方法及びフッ素含有光ファイバ母材
JP2013230961A (ja) * 2012-05-02 2013-11-14 Shin-Etsu Chemical Co Ltd 光ファイバプリフォームの製造方法
CN102730961B (zh) * 2012-07-16 2015-01-14 江苏亨通光电股份有限公司 一种制造大尺寸弯曲不敏感光纤预制棒的装置及方法
US9618692B2 (en) * 2014-07-10 2017-04-11 Corning Incorporated High chlorine content low attenuation optical fiber
CN110221382B (zh) * 2019-06-12 2020-07-07 烽火通信科技股份有限公司 一种超低衰减大有效面积的单模光纤

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933454A (en) * 1974-04-22 1976-01-20 Corning Glass Works Method of making optical waveguides
DE2536456C2 (de) * 1975-08-16 1981-02-05 Heraeus Quarzschmelze Gmbh, 6450 Hanau Halbzeug für die Herstellung von Lichtleitfasern und Verfahren zur Herstellung des Halbzeugs
JPS5521059A (en) * 1978-07-31 1980-02-14 Nippon Telegr & Teleph Corp <Ntt> Optical fiber
JPS6038345B2 (ja) * 1978-11-07 1985-08-31 日本電信電話株式会社 光伝送用ガラス素材の製造方法
JPS5565909A (en) * 1978-11-13 1980-05-17 Nippon Telegr & Teleph Corp <Ntt> Optical fiber
US4283213A (en) * 1979-10-22 1981-08-11 International Telephone And Telegraph Corporation Method of fabrication of single mode optical fibers or waveguides
US4310339A (en) * 1980-06-02 1982-01-12 Corning Glass Works Method and apparatus for forming an optical waveguide preform having a continuously removable starting member
EP0044712B1 (en) * 1980-07-17 1989-08-23 BRITISH TELECOMMUNICATIONS public limited company Improvements in and relating to glass fibres for optical communication
JPS5792536A (en) * 1980-11-29 1982-06-09 Dainichi Nippon Cables Ltd Preparation of parent material of optical glass fiber
JPS596825A (ja) * 1982-07-02 1984-01-13 株式会社ダイフク 動物飼育装置
JPS59202401A (ja) * 1983-05-02 1984-11-16 Sumitomo Electric Ind Ltd 光フアイバおよびその製造方法
US4629485A (en) * 1983-09-26 1986-12-16 Corning Glass Works Method of making fluorine doped optical preform and fiber and resultant articles
JPS60161347A (ja) * 1984-01-24 1985-08-23 Sumitomo Electric Ind Ltd 光フアイバ用ガラス母材の製造方法
JPS60260430A (ja) * 1984-06-04 1985-12-23 Sumitomo Electric Ind Ltd フツ素をクラツド部に含有する光フアイバ用母材の製造方法
JPS6236035A (ja) * 1985-04-18 1987-02-17 Sumitomo Electric Ind Ltd 光フアイバ母材の製造方法
US4620861A (en) * 1985-11-04 1986-11-04 Corning Glass Works Method for making index-profiled optical device
JPH0654938A (ja) * 1992-08-04 1994-03-01 G L Ii:Kk 練習用グリ−ン上のゴルフボ−ル除去バ−

Also Published As

Publication number Publication date
EP0249230B1 (en) 1990-05-09
KR900003449B1 (ko) 1990-05-19
AU7413187A (en) 1987-12-17
EP0249230A1 (en) 1987-12-16
US4822399A (en) 1989-04-18
CA1294438C (en) 1992-01-21
DE3762609D1 (de) 1990-06-13
AU592875B2 (en) 1990-01-25

Similar Documents

Publication Publication Date Title
KR880000806A (ko) 분산 시프트싱글모우드 광파이버 및 그 제조방법
KR930000404A (ko) 광파이버모재의 제조법
US4832720A (en) Method for producing multi-core optical fiber
SE7906403L (sv) Optisk fiber med indexgradient och forfarande for framstellning av denna
SE7906402L (sv) Optisk fiber och forfarande for dess framstellning
ES8601491A1 (es) Un metodo mejorado para realizar un elemento preformado para fabricacion de fibras opticas.
US4737179A (en) Method for producing glass preform for optical fiber
KR850004450A (ko) 광학섬유의 성형방법
KR960014984A (ko) 광섬유 단면이 일정 열전도율 기울기를 갖는 단일모드 광섬유 모재 및 그 제조 방법
ATE57266T1 (de) Optische faserkupplung und herstellungsverfahren.
KR920004291A (ko) 실리카 유리 기재의 제조방법
KR850007235A (ko) 싱글모우드 파이버용 중간체의 제조방법
US4504297A (en) Optical fiber preform manufacturing method
KR860003170A (ko) 광파이버용 모재의 제조방법
JPS55100233A (en) Production of optical fiber base material
JPS54131043A (en) Production of preform for optical fiber
KR860000222A (ko) 광파이버용 유리모재의 제조방법
JPS57170835A (en) Manufacture of single-mode optical fiber
JPS6465038A (en) Production of preform for single-mode optical fiber
GB1406870A (en) Method of forming an economic optical waveguide fibre
JPH0820574B2 (ja) 分散シフトフアイバ及びその製造方法
KR850006384A (ko) 광파이버용 프리포옴의 제조방법
JPS6424041A (en) Production of base material for dispersed shift fiber
JPS5575933A (en) Production of fiber for light transmission
KR860000578A (ko) 불소를 클래드부에 함유하는 광파이버용 모재의 제조방법

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20030509

Year of fee payment: 14

LAPS Lapse due to unpaid annual fee