Method for producing an optical fibre for a distributed measurement of temperature or deformation in a harsh environment using the Rayleigh backscattered signal
US11971310B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Dec 10, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C17/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.