[go: up one dir, main page]

KR930002257A - 광파이버용 유리모재의 제조방법 - Google Patents

광파이버용 유리모재의 제조방법 Download PDF

Info

Publication number
KR930002257A
KR930002257A KR1019920012835A KR920012835A KR930002257A KR 930002257 A KR930002257 A KR 930002257A KR 1019920012835 A KR1019920012835 A KR 1019920012835A KR 920012835 A KR920012835 A KR 920012835A KR 930002257 A KR930002257 A KR 930002257A
Authority
KR
South Korea
Prior art keywords
base material
temperature
glass base
heating step
manufacturing
Prior art date
Application number
KR1019920012835A
Other languages
English (en)
Other versions
KR940011118B1 (ko
Inventor
마스미 이또
토시오 단즈카
이찌로 츠찌야
Original Assignee
쿠라우찌 노리타카
스미도모덴기고오교오 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26429995&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR930002257(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP3179814A external-priority patent/JP2836302B2/ja
Priority claimed from JP8864092A external-priority patent/JP2985493B2/ja
Application filed by 쿠라우찌 노리타카, 스미도모덴기고오교오 가부시기가이샤 filed Critical 쿠라우찌 노리타카
Publication of KR930002257A publication Critical patent/KR930002257A/ko
Application granted granted Critical
Publication of KR940011118B1 publication Critical patent/KR940011118B1/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
    • 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
    • C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
    • 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
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • 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

Landscapes

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

Abstract

내용 없음.

Description

광파이버용 유리모재의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 그을음 유리모재를 투명화하기 위한 가열로의 개략단면도,
제4도는 각종 온도에서 감압하에 그을음 유리모재를 가열한 경우의 감압도와 부피밀도의 변화를 도시한 그래프.

Claims (10)

  1. 그을음유리모재가 감압하에서 투명유리화되지 않는 온도에서, 상기 그을음유리모재를 가옅하여 그 모재로부터 가스를 제거하는 제1가열공정과, 상기 제1가열 공정으로부터 상기 모재가 감압하에서 투명유리화되는 온도에서 상기 모재를 가열하는 제2가열공정을 포함하는 것을 특징으로 하는 광파이버광 유리모재의 제조방법.
  2. 제1항에 있어서, 상기 제1가열공정에서의 온도가 900-1200℃이고. 압력이 10pa이하로 감압될 때까지 상기 가열공정을 계속하는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  3. 제1항에 있어서, 상기 제2가열공정은 10pa이하의 압력하에서 1500∼1500℃의 온도에서 1∼60분간 수행되는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  4. 제1항에 있어서, 상기 제1가열공정 이전에, 상기 그을음유리모재를 20pa이하의 압력으로 진공처리하는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  5. 제1항에 있어서, 800℃로부터 제1가열공정의 온도까지 2-10℃/min의 승온속도로 상기 그을음유리모재를 가열처리하는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  6. 제1항에 있어서, 상기 제1가열공정의 온도로부터 상기 제2가열공정의 온도까지 1-4℃/min의 승온속도로 상기 모재를 가열처리하는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  7. 제6항에 있어서, 상기 승온과정중에 승온속도를 변경하고. 변경후의 승온속도는 변경전의 승온속도보다 작은 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  8. 제6항에 있어서, 상기 제1가열공정의 온도로부터 제2가열공정의 온도까지의 승온과정중 온도를 소정시간동안 일정하게 유지하는 것을 특징으로 하는 광파이버용 유리모재의 제조방법.
  9. 제1항에 있어서, 상기 그을음유리모재를 가열하는데 사용되는 히터는 적어도 상하 두부분으로 구성되어 있고, 하부는 상부보다 낮은 온도로 가열되는 것을 특징으로 하는 광파이버용 유리모재의 제조방법,
  10. 제7항에 있어서, 상기 그을음유리모재가, 중심부보다도 외주부에서 굴절율이 낮은 적어도 2중도파로 구조를 지닌 유리봉의 외주에, 기상합성법에 의해 유리검댕을 퇴적시킨 복합체인 것을 특징으로하는 광파이버용 유리모재의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019920012835A 1991-07-19 1992-07-18 광파이버용 유리모재의 제조방법 KR940011118B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP91-179814 1991-07-19
JP3179814A JP2836302B2 (ja) 1991-07-19 1991-07-19 ガラス物品の製造方法
JP91-179714 1991-07-19
JP92-88640 1992-04-08
JP8864092A JP2985493B2 (ja) 1992-04-09 1992-04-09 光ファイバ母材の製造方法

Publications (2)

Publication Number Publication Date
KR930002257A true KR930002257A (ko) 1993-02-22
KR940011118B1 KR940011118B1 (ko) 1994-11-23

Family

ID=26429995

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920012835A KR940011118B1 (ko) 1991-07-19 1992-07-18 광파이버용 유리모재의 제조방법

Country Status (5)

Country Link
US (1) US5330548A (ko)
EP (1) EP0523692B2 (ko)
KR (1) KR940011118B1 (ko)
AU (1) AU653411B2 (ko)
DE (1) DE69209174T3 (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2917729B2 (ja) * 1993-03-03 1999-07-12 住友電気工業株式会社 光ファイバ母材の製造方法
US6011644A (en) * 1994-07-29 2000-01-04 Corning Incorporated Hybrid fiber amplifier
US5656057A (en) * 1995-05-19 1997-08-12 Corning Incorporated Method for drying and sintering an optical fiber preform
EP0744383B1 (en) * 1995-05-22 1999-09-08 Corning Incorporated Method for drying and sintering an optical fiber preform
DE19723833A1 (de) 1997-06-06 1998-12-10 Alsthom Cge Alcatel Verstärkungslichtwellenleiter und Verfahren zu seiner Herstellung
JPH1179773A (ja) * 1997-09-08 1999-03-23 Sumitomo Electric Ind Ltd ガラス母材の製造方法及びその装置
KR20010073057A (ko) * 1998-08-31 2001-07-31 오카야마 노리오 유리 물품의 제조방법 및 광섬유용 유리 모재
WO2002098808A1 (en) * 2001-05-31 2002-12-12 Corning Incorporated Method of low pmd optical fiber manufacture
DE10218864C1 (de) * 2002-04-26 2003-10-23 Heraeus Tenevo Ag Verfahren zur Herstellung eines zylinderförmigen Quarzglaskörpers mit geringem OH-Gehalt
DE102004035086B4 (de) * 2004-07-20 2008-07-03 Heraeus Quarzglas Gmbh & Co. Kg Verfahren zur Herstellung eines Hohlzylinders aus Quarzglas mit kleinem Innendurchmesser sowie zur Durchführung des Verfahrens geeignete Vorrichtung
US20100122558A1 (en) * 2008-11-19 2010-05-20 John Michael Jewell Apparatus and Method of Sintering an Optical Fiber Preform
CN102348654B (zh) * 2009-03-12 2014-09-17 株式会社藤仓 光纤母材的制造方法
US10081125B2 (en) 2015-07-20 2018-09-25 International Business Machines Corporation Method to detect and remove gas bubbles from molten substrate to prevent hollow fiber formation
US9863875B1 (en) 2016-10-19 2018-01-09 International Business Machines Corporation In-situ detection of hollow glass fiber formation
US20230339797A1 (en) * 2020-09-28 2023-10-26 Sumitomo Electric Industries, Ltd. Method for producing fluorine-containing silica glass

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105427A (en) * 1977-04-25 1978-08-08 Corning Glass Works Process for dewatering porous glass
JPS5924742B2 (ja) * 1979-10-25 1984-06-12 日本電信電話株式会社 光フアイバ用ガラス素材の製造方法
JPS5688836A (en) * 1979-12-20 1981-07-18 Nippon Telegr & Teleph Corp <Ntt> Preparation of glass stock for optical fiber
US4586943A (en) * 1983-10-20 1986-05-06 Sumitomo Electric Industries, Ltd. Method for the production of glass preform for optical fibers
JPS6158822A (ja) * 1984-08-30 1986-03-26 Nippon Sanso Kk 透明石英ガラスの製造法
JPS6158823A (ja) * 1984-08-30 1986-03-26 Nippon Sanso Kk 透明石英ガラスの製造法
JPS6158824A (ja) * 1984-08-30 1986-03-26 Nippon Sanso Kk 透明石英ガラスの製造法
JP2559395B2 (ja) * 1987-02-17 1996-12-04 住友電気工業株式会社 高純度透明ガラスの製造方法及び製造装置
JPS643024A (en) * 1987-06-25 1989-01-06 Seiko Epson Corp Production of doped quartz glass
JPH021025A (ja) * 1988-06-09 1990-01-05 Fuji Xerox Co Ltd ユーザインタフェイスの排他的選択子作成方式
JP3175247B2 (ja) * 1991-12-16 2001-06-11 住友電気工業株式会社 光ファイバ用多孔質母材の加熱透明化方法

Also Published As

Publication number Publication date
KR940011118B1 (ko) 1994-11-23
EP0523692A1 (en) 1993-01-20
AU1968892A (en) 1993-01-21
EP0523692B1 (en) 1996-03-20
DE69209174T2 (de) 1996-09-05
DE69209174D1 (de) 1996-04-25
US5330548A (en) 1994-07-19
AU653411B2 (en) 1994-09-29
DE69209174T3 (de) 1999-08-19
EP0523692B2 (en) 1999-03-31

Similar Documents

Publication Publication Date Title
KR930002257A (ko) 광파이버용 유리모재의 제조방법
US5356449A (en) Vad process improvements
KR850002444A (ko) 광학섬유 및 그의 제조방법
AU706918B2 (en) Method for drying and sintering an optical fiber preform
KR940022178A (ko) 광 파이버 모재의 제조방법
CA2085198A1 (en) Process for heating vitrification of porous preform for optical fiber
KR830006127A (ko) 광 도파관 수우트 프리폼과 이프리폼으로 형성된 광섬유 및 수우트 프리폼 제작방법
KR910000550A (ko) 광파이버용모재의 제조방법
US5281248A (en) VAd process improvements
JPS6476927A (en) Heating oven for optical fiber parent glass and its production
CA2174832A1 (en) Method for drying and sintering an optical fiber preform
JPS54112217A (en) Production of optical fiber
JPS5571644A (en) Optical fiber
JPS54116425A (en) Production of optical fiber
JPS5711836A (en) Preparation of optical fiber
JPS6374931A (ja) 単一モ−ド光フアイバ用母材の製造方法
JPS6445738A (en) Production of optical fiber preform
JPS5924743B2 (ja) 光フアイバ母材の製造法
JPS55144437A (en) Producing optical fiber matrix
JPH01230441A (ja) 光フアイバの製造方法
JPS5771831A (en) Manufacturing of metal-clad optical fiber
JPH03232732A (ja) 耐水素性光ファイバ用ガラス母材の製造方法
JPS62230638A (ja) ガラス物品の製造方法
JPH0340931A (ja) 光ファイバ用ガラス母材の製造方法
KR830001162A (ko) 관전송용 소재(光傳送用素材)의 제조 방법

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19920718

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19920718

Comment text: Request for Examination of Application

PG1501 Laying open of application
G160 Decision to publish patent application
PG1605 Publication of application before grant of patent

Comment text: Decision on Publication of Application

Patent event code: PG16051S01I

Patent event date: 19941031

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19950215

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 19950403

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 19950403

End annual number: 3

Start annual number: 1

PR1001 Payment of annual fee

Payment date: 19971111

Start annual number: 4

End annual number: 4

PR1001 Payment of annual fee

Payment date: 19971230

Start annual number: 5

End annual number: 7

PR1001 Payment of annual fee

Payment date: 20011114

Start annual number: 8

End annual number: 8

PR1001 Payment of annual fee

Payment date: 20021107

Start annual number: 9

End annual number: 9

PR1001 Payment of annual fee

Payment date: 20031106

Start annual number: 10

End annual number: 10

PR1001 Payment of annual fee

Payment date: 20041109

Start annual number: 11

End annual number: 11

PR1001 Payment of annual fee

Payment date: 20051111

Start annual number: 12

End annual number: 12

PR1001 Payment of annual fee

Payment date: 20061110

Start annual number: 13

End annual number: 13

PR1001 Payment of annual fee

Payment date: 20071106

Start annual number: 14

End annual number: 14

PR1001 Payment of annual fee

Payment date: 20081110

Start annual number: 15

End annual number: 15

PR1001 Payment of annual fee

Payment date: 20091110

Start annual number: 16

End annual number: 16

PR1001 Payment of annual fee

Payment date: 20101122

Start annual number: 17

End annual number: 17

FPAY Annual fee payment

Payment date: 20111028

Year of fee payment: 18

PR1001 Payment of annual fee

Payment date: 20111028

Start annual number: 18

End annual number: 18

EXPY Expiration of term
PC1801 Expiration of term