CA1323193C - Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches - Google Patents

Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches

Info

Publication number: CA1323193C
Authority: CA; Canada
Prior art keywords: preform; muffle tube; glass; heater; carbon
Prior art date: 1987-06-15
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 - Fee Related

Application number

CA000572413A

Other languages

English (en)

Inventor

Ichiro Tsuchiya

Michihisa Kyoto

Yoichi Ishiguro

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sumitomo Electric Industries Ltd

Original Assignee

Sumitomo Electric Industries Ltd

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.)

1987-06-15

Filing date

1988-07-19

Publication date

1993-10-19

1988-02-16 Priority to EP19880901646 priority Critical patent/EP0302121B1/fr

1988-02-16 Priority to DE88901646T priority patent/DE3885184T2/de

1988-02-16 Priority to PCT/JP1988/000151 priority patent/WO1988006145A1/fr

1988-02-16 Priority to AU12918/88A priority patent/AU593724B2/en

1988-07-19 Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd

1988-07-19 Priority to CA000572413A priority patent/CA1323193C/fr

1993-10-19 Application granted granted Critical

1993-10-19 Publication of CA1323193C publication Critical patent/CA1323193C/fr

1994-09-01 Priority to HK91594A priority patent/HK91594A/en

2010-10-19 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

239000011521 glass Substances 0.000 title claims abstract description 101
239000013307 optical fiber Substances 0.000 title claims abstract description 63
238000010438 heat treatment Methods 0.000 title claims abstract description 41
238000004519 manufacturing process Methods 0.000 title claims description 10
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 124
229910052799 carbon Inorganic materials 0.000 claims abstract description 121
VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 102
229910052731 fluorine Inorganic materials 0.000 claims abstract description 85
239000011737 fluorine Substances 0.000 claims abstract description 85
239000010453 quartz Substances 0.000 claims abstract description 32
239000010419 fine particle Substances 0.000 claims abstract description 20
239000006121 base glass Substances 0.000 claims abstract description 10
YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 83
229910010271 silicon carbide Inorganic materials 0.000 claims description 39
HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 38
ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical class F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 31
238000000034 method Methods 0.000 claims description 26
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 19
239000000463 material Substances 0.000 claims description 16
230000007797 corrosion Effects 0.000 claims description 11
238000005260 corrosion Methods 0.000 claims description 11
239000011261 inert gas Substances 0.000 claims description 10
229910052757 nitrogen Inorganic materials 0.000 claims description 8
230000035699 permeability Effects 0.000 claims description 5
TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical class FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 5
238000005229 chemical vapour deposition Methods 0.000 claims description 3
238000005268 plasma chemical vapour deposition Methods 0.000 claims description 2
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
239000003795 chemical substances by application Substances 0.000 claims 1
229920001296 polysiloxane Polymers 0.000 claims 1
PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 2
239000007789 gas Substances 0.000 description 83
239000004071 soot Substances 0.000 description 65
239000010410 layer Substances 0.000 description 38
235000012239 silicon dioxide Nutrition 0.000 description 38
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 33
229910004014 SiF4 Inorganic materials 0.000 description 28
238000002474 experimental method Methods 0.000 description 27
239000012535 impurity Substances 0.000 description 25
239000010949 copper Substances 0.000 description 24
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 23
229910052802 copper Inorganic materials 0.000 description 23
239000011162 core material Substances 0.000 description 19
238000005253 cladding Methods 0.000 description 18
239000001307 helium Substances 0.000 description 17
229910052734 helium Inorganic materials 0.000 description 17
SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 17
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
238000010521 absorption reaction Methods 0.000 description 16
229910052742 iron Inorganic materials 0.000 description 16
238000005192 partition Methods 0.000 description 16
230000005540 biological transmission Effects 0.000 description 14
229910052906 cristobalite Inorganic materials 0.000 description 14
229910052681 coesite Inorganic materials 0.000 description 13
239000002019 doping agent Substances 0.000 description 13
229910052682 stishovite Inorganic materials 0.000 description 13
229910052905 tridymite Inorganic materials 0.000 description 13
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 12
239000000460 chlorine Substances 0.000 description 12
229910052801 chlorine Inorganic materials 0.000 description 12
229910001868 water Inorganic materials 0.000 description 12
230000018044 dehydration Effects 0.000 description 11
238000006297 dehydration reaction Methods 0.000 description 11
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
239000001301 oxygen Substances 0.000 description 10
229910052760 oxygen Inorganic materials 0.000 description 10
239000000377 silicon dioxide Substances 0.000 description 10
238000006243 chemical reaction Methods 0.000 description 9
230000003647 oxidation Effects 0.000 description 9
238000007254 oxidation reaction Methods 0.000 description 9
239000002245 particle Substances 0.000 description 9
KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
229910052786 argon Inorganic materials 0.000 description 8
239000000919 ceramic Substances 0.000 description 8
239000011248 coating agent Substances 0.000 description 8
238000000576 coating method Methods 0.000 description 8
238000011109 contamination Methods 0.000 description 8
230000003247 decreasing effect Effects 0.000 description 8
238000005530 etching Methods 0.000 description 8
YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 8
238000012360 testing method Methods 0.000 description 8
238000000151 deposition Methods 0.000 description 7
229910000040 hydrogen fluoride Inorganic materials 0.000 description 7
230000007062 hydrolysis Effects 0.000 description 7
238000006460 hydrolysis reaction Methods 0.000 description 7
125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
150000001875 compounds Chemical class 0.000 description 6
230000000694 effects Effects 0.000 description 6
229910052751 metal Inorganic materials 0.000 description 6
239000002184 metal Substances 0.000 description 6
238000005245 sintering Methods 0.000 description 6
238000004017 vitrification Methods 0.000 description 6
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
230000008021 deposition Effects 0.000 description 5
239000003513 alkali Substances 0.000 description 4
230000008859 change Effects 0.000 description 4
230000000052 comparative effect Effects 0.000 description 4
-1 copper or iron Chemical class 0.000 description 4
238000004031 devitrification Methods 0.000 description 4
229910001873 dinitrogen Inorganic materials 0.000 description 4
239000000428 dust Substances 0.000 description 4
239000012071 phase Substances 0.000 description 4
238000010926 purge Methods 0.000 description 4
239000002994 raw material Substances 0.000 description 4
230000004580 weight loss Effects 0.000 description 4
238000004458 analytical method Methods 0.000 description 3
238000003780 insertion Methods 0.000 description 3
230000037431 insertion Effects 0.000 description 3
JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
150000002739 metals Chemical class 0.000 description 3
239000000203 mixture Substances 0.000 description 3
230000035515 penetration Effects 0.000 description 3
230000002093 peripheral effect Effects 0.000 description 3
239000007787 solid Substances 0.000 description 3
238000009864 tensile test Methods 0.000 description 3
238000007669 thermal treatment Methods 0.000 description 3
239000010936 titanium Substances 0.000 description 3
KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
229910052581 Si3N4 Inorganic materials 0.000 description 2
206010040844 Skin exfoliation Diseases 0.000 description 2
GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
238000000149 argon plasma sintering Methods 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
239000011247 coating layer Substances 0.000 description 2
238000007796 conventional method Methods 0.000 description 2
230000007423 decrease Effects 0.000 description 2
230000007547 defect Effects 0.000 description 2
230000007613 environmental effect Effects 0.000 description 2
239000000835 fiber Substances 0.000 description 2
238000011049 filling Methods 0.000 description 2
239000003517 fume Substances 0.000 description 2
229910002804 graphite Inorganic materials 0.000 description 2
239000010439 graphite Substances 0.000 description 2
239000003779 heat-resistant material Substances 0.000 description 2
238000005259 measurement Methods 0.000 description 2
229910003465 moissanite Inorganic materials 0.000 description 2
239000005373 porous glass Substances 0.000 description 2
239000011148 porous material Substances 0.000 description 2
239000000843 powder Substances 0.000 description 2
238000012545 processing Methods 0.000 description 2
238000005070 sampling Methods 0.000 description 2
238000003786 synthesis reaction Methods 0.000 description 2
230000008646 thermal stress Effects 0.000 description 2
229910052719 titanium Inorganic materials 0.000 description 2
229910052723 transition metal Inorganic materials 0.000 description 2
150000003624 transition metals Chemical class 0.000 description 2
229910015400 FeC13 Inorganic materials 0.000 description 1
229910007260 Si2F6 Inorganic materials 0.000 description 1
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
229910004533 TaB2 Inorganic materials 0.000 description 1
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
230000002411 adverse Effects 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
239000011230 binding agent Substances 0.000 description 1
239000012159 carrier gas Substances 0.000 description 1
150000001805 chlorine compounds Chemical class 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
239000007771 core particle Substances 0.000 description 1
238000005336 cracking Methods 0.000 description 1
230000006866 deterioration Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000009792 diffusion process Methods 0.000 description 1
239000006185 dispersion Substances 0.000 description 1
238000009826 distribution Methods 0.000 description 1
150000002222 fluorine compounds Chemical group 0.000 description 1
238000010574 gas phase reaction Methods 0.000 description 1
239000007792 gaseous phase Substances 0.000 description 1
238000007429 general method Methods 0.000 description 1
238000007496 glass forming Methods 0.000 description 1
229910052736 halogen Inorganic materials 0.000 description 1
150000002367 halogens Chemical class 0.000 description 1
XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
150000002431 hydrogen Chemical class 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
239000012212 insulator Substances 0.000 description 1
230000031700 light absorption Effects 0.000 description 1
239000007788 liquid Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
150000001247 metal acetylides Chemical class 0.000 description 1
229910044991 metal oxide Inorganic materials 0.000 description 1
150000004706 metal oxides Chemical class 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
229910052759 nickel Inorganic materials 0.000 description 1
QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
239000003921 oil Substances 0.000 description 1
230000003287 optical effect Effects 0.000 description 1
230000002035 prolonged effect Effects 0.000 description 1
238000000746 purification Methods 0.000 description 1
230000035939 shock Effects 0.000 description 1
HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
239000007921 spray Substances 0.000 description 1
238000005507 spraying Methods 0.000 description 1
239000000126 substance Substances 0.000 description 1
229910052717 sulfur Inorganic materials 0.000 description 1
239000011593 sulfur Substances 0.000 description 1
230000002194 synthesizing effect Effects 0.000 description 1
229910052715 tantalum Inorganic materials 0.000 description 1
GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
238000005979 thermal decomposition reaction Methods 0.000 description 1
SDNBGJALFMSQER-UHFFFAOYSA-N trifluoro(trifluorosilyl)silane Chemical compound F[Si](F)(F)[Si](F)(F)F SDNBGJALFMSQER-UHFFFAOYSA-N 0.000 description 1
239000012808 vapor phase Substances 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
- C03B37/01—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]
- C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
- C03B37/0146—Furnaces therefor, e.g. muffle tubes, furnace linings
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
- F27B17/0016—Chamber type furnaces
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
- F27B5/10—Muffles
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
- 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

Landscapes

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

CA000572413A 1987-02-16 1988-07-19 Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches Expired - Fee Related CA1323193C (fr)

Priority Applications (6)

Application Number	Priority Date	Filing Date	Title
EP19880901646 EP0302121B1 (fr)	1987-02-16	1988-02-16	Four de chauffage pour materiaux en verre pour fibre optique et leur methode de fabrication
DE88901646T DE3885184T2 (de)	1987-02-16	1988-02-16	Ofen zum erwärmen von glaswerkstoffen für optische fasern und verfahren zur herstellung.
PCT/JP1988/000151 WO1988006145A1 (fr)	1987-02-16	1988-02-16	Four de chauffage pour materiaux en verre pour fibre optique et leur methode de fabrication
AU12918/88A AU593724B2 (en)	1987-02-16	1988-02-16	Furnace for heating glass preform for optical fiber and method for producing glass preform
CA000572413A CA1323193C (fr)	1987-06-15	1988-07-19	Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches
HK91594A HK91594A (en)	1987-02-16	1994-09-01	Heating furnace for glass materials for optical fiber and method of manufacturing same

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP14876987		1987-06-15
CA000572413A CA1323193C (fr)	1987-06-15	1988-07-19	Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches

Publications (1)

Publication Number	Publication Date
CA1323193C true CA1323193C (fr)	1993-10-19

Family

ID=25672000

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000572413A Expired - Fee Related CA1323193C (fr)	1987-02-16	1988-07-19	Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches

Country Status (1)

Country	Link
CA (1)	CA1323193C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN109626809A (zh) *	2017-10-05	2019-04-16	信越化学工业株式会社	用于制备光纤的多孔玻璃沉积物的方法
CN110872174A (zh) *	2018-09-03	2020-03-10	德拉克通信科技公司	在制造光纤中使用的加热纵长的氧化硅筒的方法、加热装置和系统

1988
- 1988-07-19 CA CA000572413A patent/CA1323193C/fr not_active Expired - Fee Related

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN109626809A (zh) *	2017-10-05	2019-04-16	信越化学工业株式会社	用于制备光纤的多孔玻璃沉积物的方法
CN109626809B (zh) *	2017-10-05	2022-07-15	信越化学工业株式会社	用于制备光纤的多孔玻璃沉积物的方法
CN110872174A (zh) *	2018-09-03	2020-03-10	德拉克通信科技公司	在制造光纤中使用的加热纵长的氧化硅筒的方法、加热装置和系统
CN110872174B (zh) *	2018-09-03	2022-12-09	德拉克通信科技公司	在制造光纤中使用的加热纵长的氧化硅筒的方法、加热装置和系统

Legal Events

Date	Code	Title	Description
2006-10-19	MKLA	Lapsed

Publication	Publication Date	Title
US4969941A (en)	1990-11-13	Furnace for heating glass preform for optical fiber and method for producing glass preform
US5259856A (en)	1993-11-09	Method of producing glass preform in furnace for heating glass
EP0529694B1 (fr)	1996-09-04	Procédé de traitement thermique d'une préforme pour fibre optique
EP0139348B1 (fr)	1990-01-24	Fibre optique et procédé de sa fabrication
EP0380054B1 (fr)	1994-01-26	Four pour le chauffage de préformes à quartz pour fibres optiques
EP0302121B1 (fr)	1993-10-27	Four de chauffage pour materiaux en verre pour fibre optique et leur methode de fabrication
EP0177040B1 (fr)	1990-02-07	Procédé de fabrication d'une préforme en verre pour fibres optiques
EP0416614B1 (fr)	1994-04-27	Four de chauffage pour la préforme d'une fibre optique et procédé de fabrication d'une préforme de verre
EP0170249B1 (fr)	1991-12-27	Procédé pour la fabrication d'une préforme en verre pour fibres optiques
EP0201937A2 (fr)	1986-11-20	Procédé pour la fabrication d'une préforme en verre pour fibres optiques
CA1323193C (fr)	1993-10-19	Four servant au chauffage d'ebauches en verre pour la production de fibres optiques et mode de production desdites ebauches
EP0509564B1 (fr)	1994-09-07	Four pour la fabrication de préformes pour fibres optiques
JPH0442341B2 (fr)	1992-07-13
FI94747B (fi)	1995-07-14	Menetelmä optisen kuidun huokoisen esimuodon valmistamiseksi
KR930000773B1 (ko)	1993-02-04	광 파이버용 모재의 제조방법
JPH03103332A (ja)	1991-04-30	光ファイバ用ガラス母材の加熱炉および製法
CA1296528C (fr)	1992-03-03	Methode de fabrication de preformes de verre pour les fibres optiques
PT88007A (pt)	1990-02-08	Forno para aquecimento de pre-formatado de vidro para fibra optica e processo para a producao de pre-formatado de vidro
CA2013731A1 (fr)	1991-10-03	Four de chauffage de preformes de quartz de grande purete pour la fabrication des fibres optiques