JPH0550448B2 - - Google Patents
Info
- Publication number
- JPH0550448B2 JPH0550448B2 JP1014628A JP1462889A JPH0550448B2 JP H0550448 B2 JPH0550448 B2 JP H0550448B2 JP 1014628 A JP1014628 A JP 1014628A JP 1462889 A JP1462889 A JP 1462889A JP H0550448 B2 JPH0550448 B2 JP H0550448B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- core tube
- carbon
- base material
- furnace core
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 70
- 238000010438 heat treatment Methods 0.000 claims description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 61
- 229910052799 carbon Inorganic materials 0.000 claims description 57
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000010453 quartz Substances 0.000 claims description 18
- 239000011261 inert gas Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002296 pyrolytic carbon Substances 0.000 claims description 6
- 239000005373 porous glass Substances 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 229910021397 glassy carbon Inorganic materials 0.000 claims description 3
- 239000011162 core material Substances 0.000 description 79
- 239000002585 base Substances 0.000 description 51
- 238000000576 coating method Methods 0.000 description 32
- 239000011248 coating agent Substances 0.000 description 28
- 239000007789 gas Substances 0.000 description 21
- 239000010410 layer Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 14
- 229910010271 silicon carbide Inorganic materials 0.000 description 14
- 239000013307 optical fiber Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 230000002411 adverse Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004334 fluoridation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- C03B37/10—Non-chemical treatment
- C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
-
- 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
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
-
- 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
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/60—Optical fibre draw furnaces
- C03B2205/62—Heating means for drawing
- C03B2205/63—Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Melting And Manufacturing (AREA)
- Furnace Details (AREA)
- Resistance Heating (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1014628A JPH02196045A (ja) | 1989-01-23 | 1989-01-23 | 高純度石英母材製造用加熱炉 |
| AU48649/90A AU618162B2 (en) | 1989-01-23 | 1990-01-22 | Furnace for heating highly pure quartz preform for optical fiber |
| KR1019900000726A KR920010088B1 (ko) | 1989-01-23 | 1990-01-22 | 고순도 석영모재 제조용 가열로 |
| EP90101303A EP0380054B1 (en) | 1989-01-23 | 1990-01-23 | Furnace for heating highly pure quartz preform for optical fiber |
| DE69006223T DE69006223T2 (de) | 1989-01-23 | 1990-01-23 | Ofen zum Erhitzen von hochreinen Quarzvorformen für optische Fasern. |
| CA002013730A CA2013730A1 (en) | 1989-01-23 | 1990-04-03 | Furnace for producing high purity quartz glass preform |
| US07/673,870 US5114338A (en) | 1989-01-23 | 1991-03-22 | Furnace for heating highly pure quartz preform for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1014628A JPH02196045A (ja) | 1989-01-23 | 1989-01-23 | 高純度石英母材製造用加熱炉 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02196045A JPH02196045A (ja) | 1990-08-02 |
| JPH0550448B2 true JPH0550448B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-07-29 |
Family
ID=11866462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1014628A Granted JPH02196045A (ja) | 1989-01-23 | 1989-01-23 | 高純度石英母材製造用加熱炉 |
Country Status (6)
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU626362B2 (en) * | 1988-12-29 | 1992-07-30 | Sumitomo Electric Industries, Ltd. | Furnace for producing high purity quartz glass preform |
| JP2808857B2 (ja) * | 1989-09-06 | 1998-10-08 | 住友電気工業株式会社 | 光ファイバ用ガラス母材の加熱炉および製法 |
| CA2025880A1 (en) * | 1989-09-25 | 1991-03-26 | Ichiro Tsuchiya | Furnace for production of optical fiber preform |
| JP3060782B2 (ja) * | 1993-06-08 | 2000-07-10 | 住友電気工業株式会社 | 高純度透明ガラスの製造方法 |
| US6474107B1 (en) * | 1996-12-02 | 2002-11-05 | Franklin W. Dabby | Fluorinating an optical fiber preform in a pure aluminum oxide muffle tube |
| EP0867414A1 (en) * | 1997-03-27 | 1998-09-30 | Alcatel | Graphite liner and heating element impregnated with vitreous carbon for a furnace for drawing optical fibers |
| US6371394B1 (en) | 1998-12-23 | 2002-04-16 | Pirelli Cavi E Sistemi S.P.A. | Method for winding a fibre element having different longitudinal portions |
| EP1226415B1 (en) * | 1999-10-29 | 2005-01-19 | Pirelli & C. S.p.A. | Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this method |
| JP2001163632A (ja) * | 1999-12-13 | 2001-06-19 | Sumitomo Electric Ind Ltd | 光ファイバ製造方法および光ファイバ製造装置 |
| JP4379554B2 (ja) * | 2000-09-01 | 2009-12-09 | 住友電気工業株式会社 | 光ファイバ母材の脱水焼結方法 |
| US8037717B2 (en) * | 2001-10-26 | 2011-10-18 | Corning Incorporated | Methods and apparatus for pulsed doping or drying a soot preform |
| KR100461994B1 (ko) * | 2001-12-10 | 2004-12-14 | 엘지전선 주식회사 | 광섬유 모재용 퍼니스장치 |
| EP1456141A1 (en) * | 2001-12-19 | 2004-09-15 | Pirelli & C. S.p.A. | Process for determining the drawing tension in the manufacturing of an optical fibre |
| US7779651B2 (en) * | 2001-12-21 | 2010-08-24 | Prysmian Cavi E Sistemi Energia S.R.L. | Process for manufacturing a micro-structured optical fibre |
| WO2004050573A1 (en) * | 2002-09-25 | 2004-06-17 | Giacomo Stefano Roba | Process for producing an optical fiber having a low polarization mode dispersion |
| CN100572314C (zh) * | 2003-06-25 | 2009-12-23 | 株式会社藤仓 | 光纤母材的制造方法及其装置 |
| FR2858465A1 (fr) * | 2003-07-29 | 2005-02-04 | Commissariat Energie Atomique | Structures poreuses utilisables en tant que plaques bipolaires et procedes de preparation de telles structures poreuses |
| CN100595170C (zh) * | 2003-08-29 | 2010-03-24 | 普雷斯曼电缆及系统能源有限公司 | 制造低偏振模色散光纤的方法 |
| DE602004020807D1 (de) | 2003-12-30 | 2009-06-04 | Prysmian Spa | Optische faserverbindung mit niedriger polarisationsmodendispersion (pmd) und herstellungsverfahren dafür |
| JP2005194135A (ja) * | 2004-01-07 | 2005-07-21 | Shin Etsu Chem Co Ltd | 光ファイバ用多孔質母材の製造方法及びガラス母材 |
| US20060242998A1 (en) * | 2005-04-29 | 2006-11-02 | The Boc Group, Inc. | Preform consolidation process |
| JP5503339B2 (ja) * | 2009-03-16 | 2014-05-28 | 古河電気工業株式会社 | 多孔質ガラス母材の脱水焼結用加熱炉 |
| DE102020109869A1 (de) * | 2019-05-03 | 2020-11-05 | Docter Optics Se | Verfahren zur Herstellung eines optischen Elementes aus Glas |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2340519A1 (fr) * | 1976-02-06 | 1977-09-02 | France Etat | Four pour tres hautes temperatures |
| DE2818550C2 (de) * | 1977-04-30 | 1990-03-29 | Sumitomo Electric Industries, Ltd., Osaka | Vorrichtung zum Ziehen von optischen Fasern |
| WO1988006145A1 (en) * | 1987-02-16 | 1988-08-25 | Sumitomo Electric Industries, Ltd. | Heating furnace for glass materials for optical fiber and method of manufacturing same |
-
1989
- 1989-01-23 JP JP1014628A patent/JPH02196045A/ja active Granted
-
1990
- 1990-01-22 AU AU48649/90A patent/AU618162B2/en not_active Ceased
- 1990-01-22 KR KR1019900000726A patent/KR920010088B1/ko not_active Expired
- 1990-01-23 DE DE69006223T patent/DE69006223T2/de not_active Expired - Fee Related
- 1990-01-23 EP EP90101303A patent/EP0380054B1/en not_active Expired - Lifetime
-
1991
- 1991-03-22 US US07/673,870 patent/US5114338A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69006223D1 (de) | 1994-03-10 |
| DE69006223T2 (de) | 1994-07-07 |
| US5114338A (en) | 1992-05-19 |
| KR900011674A (ko) | 1990-08-01 |
| EP0380054B1 (en) | 1994-01-26 |
| EP0380054A1 (en) | 1990-08-01 |
| AU4864990A (en) | 1990-07-26 |
| AU618162B2 (en) | 1991-12-12 |
| KR920010088B1 (ko) | 1992-11-14 |
| JPH02196045A (ja) | 1990-08-02 |
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Legal Events
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