GB1500530A - Process for producing optical fibre preforms - Google Patents

Process for producing optical fibre preforms

Info

Publication number
GB1500530A
GB1500530A GB709275A GB709275A GB1500530A GB 1500530 A GB1500530 A GB 1500530A GB 709275 A GB709275 A GB 709275A GB 709275 A GB709275 A GB 709275A GB 1500530 A GB1500530 A GB 1500530A
Authority
GB
United Kingdom
Prior art keywords
tube
glass
vapour mixture
silica
heating
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
Application number
GB709275A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1500530A publication Critical patent/GB1500530A/en
Expired legal-status Critical Current

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]
    • C03B37/018—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] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01861—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
    • C03B37/01—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]
    • C03B37/018—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] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • 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

Abstract

1500530 Production of optical fibres WESTERN ELECTRIC CO Inc 19 Feb 1975 [22 Feb 1974] 7092/75 Heading C1M In the production of a preform for making a core/cladding glass fibre optical transmission line, wherein the cladding has an index of refraction of a value less than that of the core, a moving stream of a vapour mixture including at least one compound glass-forming precursor together with an oxidizing medium for forming the glass of the core is fed into a glass tube forming the cladding or outer coating therefor, while heating the tube to react the mixture and produce a glassy deposit on the inner surface of the tube, the heating being by a moving hot zone by movement of a heat source relative to the exterior of the tube and the temperature of the hot zone, the vapour mixture composition and the rate of introduction of the vapour mixture being such that at least a part of the reaction takes place within the vapour mixture at a position spaced from the inner walls of the tube to produce a suspension of oxidic reaction product particulate material which comes to rest on the inner surface of the tube as it travels downstream and is fused to form a glassy deposit from a position within the hot zone. The coated tube may be drawn under the influence of the moving heating zone or otherwise conventionally. The glass tube may be vertically positioned, but as shown (Fig. 1), the tube 2 is held in a glass lathe 1 in a horizontal position and rotated, 5a. The tube 2 is heated by heating means 3 mounted for horizontal movement 5b on a support 4 moved by a threaded feed member 6, movement towards the exit 18 of the tube being relatively slow with rapid return movement. The required vapour mixture is introduced into tube 2 by inlet tube 7 fed from any or all of sources 9, 10, 11 and 13; as shown, oxygen is bubbled through liquid reactant material 16, 17 in flasks 14, 15 with additional oxygen through source 9. The preferred glass-forming precursor is a silicon compound and undoped silica or silica doped with B 2 O 3 (to lower the refractive index) is normally used for an initial layer on a pure silica tube followed by silica with dopants such as GeO 2 to increase the refractive index. Hydrides may be used, but should be diluted by inert material such as a carrier gas of N 2 or He. Chlorides are preferred, the inert gas being in small amounts only as a carrier. Examples are given, using Si- Cl 4 + BCl 3 + O 2 initially abruptly or gradually changing to SiCl 4 + GeCl 4 + O 2 or SiH 4 + BH 4 + O 2 changing abruptly or gradually to SiH 4 + GeH 4 + O 2 , with specified volumes and temperatures used.
GB709275A 1974-02-22 1975-02-19 Process for producing optical fibre preforms Expired GB1500530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44470574A 1974-02-22 1974-02-22

Publications (1)

Publication Number Publication Date
GB1500530A true GB1500530A (en) 1978-02-08

Family

ID=23766003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB709275A Expired GB1500530A (en) 1974-02-22 1975-02-19 Process for producing optical fibre preforms

Country Status (6)

Country Link
JP (1) JPS5522423B2 (en)
CA (1) CA1050833A (en)
DE (1) DE2507340B2 (en)
FR (1) FR2261992B1 (en)
GB (1) GB1500530A (en)
NL (1) NL165720C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001378A1 (en) * 1979-01-05 1980-07-10 Western Electric Co Improved optical fiber fabrication process
US4257797A (en) 1979-01-05 1981-03-24 Western Electric Optical fiber fabrication process
JPS56501606A (en) * 1979-12-03 1981-11-05

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360250A (en) * 1974-05-31 1982-11-23 National Research Development Corp. Optical waveguides
JPS5156642A (en) * 1974-11-13 1976-05-18 Sumitomo Electric Industries
DE2538313C3 (en) * 1975-08-28 1981-11-05 Heraeus Quarzschmelze Gmbh, 6450 Hanau Process for the production of a preliminary product for the production of an optical, self-focusing light guide
US4339173A (en) * 1975-09-08 1982-07-13 Corning Glass Works Optical waveguide containing P2 O5 and GeO2
DE2546162B1 (en) * 1975-10-15 1976-09-23 Jenaer Glaswerk Schott & Gen Optical fiber with a refractive index gradient for communication
AU504423B2 (en) * 1975-11-14 1979-10-11 International Standard Electric Corporation Optical fibre
JPS5621777Y2 (en) * 1976-02-04 1981-05-22
DE2614183C3 (en) * 1976-04-02 1981-11-12 Jenaer Glaswerk Schott & Gen., 6500 Mainz Optical fiber with gradient profile of the refractive index, low transmission losses, high transmission capacity and large aperature when using GeO ↓ 2 ↓
JPS5838367B2 (en) * 1976-04-24 1983-08-23 株式会社フジクラ Method of manufacturing optical transmission fiber
JPS5838368B2 (en) * 1976-05-15 1983-08-23 住友電気工業株式会社 Optical fiber manufacturing method
JPS52153750A (en) * 1976-06-17 1977-12-21 Fujitsu Ltd Production of optical transmission wire
GB1586119A (en) * 1976-07-05 1981-03-18 Fujitsu Ltd Method of producing an optical fibre preform
DE2642949C3 (en) * 1976-09-24 1980-11-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Process for the production of internally coated glass tubes for drawing optical fibers
US4111525A (en) * 1976-10-12 1978-09-05 Bell Telephone Laboratories, Incorporated Silica based optical fiber waveguide using phosphorus pentoxide and germanium dioxide
JPS5395649A (en) * 1977-02-02 1978-08-22 Hitachi Ltd Production of optical fiber
CA1080562A (en) * 1977-02-10 1980-07-01 Frederick D. King Method of and apparatus for manufacturing an optical fibre with plasma activated deposition in a tube
GB1602052A (en) * 1977-06-20 1981-11-04 Int Standard Electric Corp Optical fibre manufacture
DE2814380C3 (en) * 1978-04-04 1982-07-08 Schott Glaswerke, 6500 Mainz Process for the production of optical glass fibers from a collapsed silica glass tube
US4229070A (en) * 1978-07-31 1980-10-21 Corning Glass Works High bandwidth optical waveguide having B2 O3 free core and method of fabrication
US4230396A (en) * 1978-07-31 1980-10-28 Corning Glass Works High bandwidth optical waveguides and method of fabrication
JPS55104941A (en) * 1979-02-06 1980-08-11 Nippon Telegr & Teleph Corp <Ntt> Production of preform for optical fiber
DE2929166A1 (en) * 1979-07-19 1981-01-29 Philips Patentverwaltung METHOD FOR THE PRODUCTION OF OPTICAL FIBERS
US4425146A (en) * 1979-12-17 1984-01-10 Nippon Telegraph & Telephone Public Corporation Method of making glass waveguide for optical circuit
GB2071644B (en) * 1980-02-22 1984-03-14 Sumitomo Electric Industries Radiation resistant optical fibres and a process for the production thereof
US4298364A (en) * 1980-03-17 1981-11-03 Corning Glass Works Method of making optical fibers having improved core roundness
DE3133013A1 (en) * 1980-08-26 1982-04-08 Western Electric Co., Inc., 10038 New York, N.Y. "METHOD FOR PRODUCING A LIGHT-FIBER FIBER BLANK"
FR2543455B1 (en) * 1983-03-30 1987-03-27 Air Liquide PROCESS FOR OPALIZING THE INTERIOR SURFACE OF OBJECTS OF LONG LENGTH IN RELATION TO THEIR SECTION
DE3335126A1 (en) * 1983-09-28 1985-04-11 Wacker-Chemitronic Gesellschaft für Elektronik-Grundstoffe mbH, 8263 Burghausen METHOD FOR CHEMICAL GAS PHASE DEPOSITION OF OXIDIC PARTICLES
JPH04135612U (en) * 1991-06-11 1992-12-17 ナシヨナル住宅産業株式会社 Exterior wall panel joint structure
KR0153835B1 (en) * 1995-11-07 1998-11-16 김광호 Process for preparation of optical glass fiber
US6769275B2 (en) * 2002-03-15 2004-08-03 Fibercore, Inc. Method for making optical fiber preform using simultaneous inside and outside deposition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737293A (en) * 1972-01-03 1973-06-05 Corning Glass Works Method of forming an economic optical waveguide fiber
JPS4886918A (en) * 1972-02-22 1973-11-16
GB1427327A (en) * 1972-06-08 1976-03-10 Standard Telephones Cables Ltd Glass optical fibres
DE2463097C2 (en) * 1973-08-21 1984-05-24 International Standard Electric Corp., New York, N.Y. Process for the production of fiber optic light guides
JPS59454B2 (en) * 1973-09-22 1984-01-06 住友電気工業株式会社 Manufacturing method of fiber base material for optical transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001378A1 (en) * 1979-01-05 1980-07-10 Western Electric Co Improved optical fiber fabrication process
US4257797A (en) 1979-01-05 1981-03-24 Western Electric Optical fiber fabrication process
JPS56501606A (en) * 1979-12-03 1981-11-05

Also Published As

Publication number Publication date
FR2261992A1 (en) 1975-09-19
CA1050833A (en) 1979-03-20
NL7502017A (en) 1975-08-26
JPS5522423B2 (en) 1980-06-17
JPS50120352A (en) 1975-09-20
FR2261992B1 (en) 1980-01-04
NL165720B (en) 1980-12-15
DE2507340B2 (en) 1979-03-01
NL165720C (en) 1984-02-16
DE2507340A1 (en) 1975-08-28

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950218