The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2024
Filed:
Jun. 21, 2019
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite DE Lille, Lille, FR;
Patrick Bulot, Villeneuve d'Ascq, FR;
Remy Bernard, Villeneuve d'Ascq, FR;
Odile Cristini, Villeneuve d'Ascq, FR;
Monika Bouet, Marquette Lez Lille, FR;
Guillaume Laffont, Meudon, FR;
Marc Douay, Villeneuve d'Ascq, FR;
COMMISSARIAT A L'ENERGIE ATOMIQUE ET ENERGIES ALTERNATIVES, Paris, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE DE LILLE, Lille, FR;
Abstract
An optical fibre, for use in the field of distributed measurement of temperature or deformation by optical reflectometry in the frequency domain using the Rayleigh backscattered signal in the fibre, includes a core doped with nanoparticles for example formed from gold particles covered with zirconium oxide, and can be subjected to high temperatures during the measurement. A method for producing the optical fibre includes a step of heat treatment during which the optical fibre is subjected, for a duration of at least one hour, to a heat treatment temperature higher than a maximum temperature to which it will be subjected during a measurement.