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1. (WO1997018169) METHOD FOR MAKING A SINGLE-MODE OPTICAL FIBRE AND OPTICAL AMPLIFIER USING SAID FIBRE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018169 International Application No.: PCT/FR1996/001752
Publication Date: 22.05.1997 International Filing Date: 07.11.1996
Chapter 2 Demand Filed: 02.06.1997
IPC:
C03B 37/012 (2006.01) ,C03B 37/027 (2006.01) ,C03C 13/04 (2006.01)
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
37
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
01
Manufacture of glass fibres or filaments
012
Manufacture of preforms for drawing fibres or filaments
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
B
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
37
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
01
Manufacture of glass fibres or filaments
02
by drawing or extruding
025
from reheated softened tubes, rods, fibres or filaments
027
Fibres composed of different sorts of glass, e.g. fibre optics
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
13
Fibre or filament compositions
04
Fibre optics, e.g. core and clad fibre compositions
Applicants:
ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE [FR/FR]; 54, rue La Boétie F-75008 Paris, FR (AllExceptUS)
CHIQUET, Frédéric [FR/FR]; FR (UsOnly)
LE THUAUT, Marylise [FR/FR]; FR (UsOnly)
GIRARD, Jean-Jacques [FR/FR]; FR (UsOnly)
BANIEL, Pascal [FR/FR]; FR (UsOnly)
Inventors:
CHIQUET, Frédéric; FR
LE THUAUT, Marylise; FR
GIRARD, Jean-Jacques; FR
BANIEL, Pascal; FR
Agent:
CASSAGNE, Philippe ; Alcatel Alsthom Recherche I.P.D. 30, avenue Kléber F-75016 Paris, FR
Priority Data:
95/1341613.11.1995FR
Title (EN) METHOD FOR MAKING A SINGLE-MODE OPTICAL FIBRE AND OPTICAL AMPLIFIER USING SAID FIBRE
(FR) PROCEDE DE FABRICATION D'UNE FIBRE OPTIQUE MONOMODE ET AMPLIFICATEUR OPTIQUE UTILISANT UNE TELLE FIBRE
Abstract:
(EN) A single-mode preform (2) including a master preform (22) housed in an outer sleeve tube (20) is provided. An intermediate tube (21) between the master preform (22) and the outer tube (20) has a lower viscosity at the fibre drawing temperature than said master preform (22) and said outer tube (20). A method for making a single-mode optical fibre is also provided. The fibre has a more centred and less deformed core than in the prior art. By way of example, an optical amplifier may thus be produced.
(FR) L'invention fournit une préforme monomode (2) comprenant une préforme mère (22) logée dans un tube manchon externe (20). Elle est caractérisée en ce qu'elle comprend, en outre, entre la préforme mère (22) et ledit tube externe (20), un tube intermédiaire (21) qui possède une viscosité à température de fibrage qui est inférieure à une viscosité à température de fibrage desdits préforme mère (22) et tube externe (20). Elle fournit également un procédé de fabrication d'une fibre optique monomode. La fibre possède un coeur plus centré et moins déformé que dans la technique antérieure. Exemple d'application: réalisation d'un amplificateur optique.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP0861215US20010045109JP2000500728 CA2235324AU1996075759