Optical fiber sensing system for temperature and salinity synchronous measurement
US11965821B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2023 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Aug 26, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/458
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber sensing system for temperature and salinity synchronous measurement is provided, which includes a broad-spectrum light source, an optical fiber circulator, a coupler, a first interferometer, a second interferometer, a third interferometer and a spectrometer; the first interferometer is insensitive to temperature and salinity; the second interferometer is sensitive to both temperature and salinity, and the third interferometer is only sensitive to temperature; light emitted by the broad-spectrum light source passes through the optical fiber circulator and enters the first interferometer; reflected light of the first interferometer passes through the optical fiber circulator and the coupler sequentially, and then enters the second and the third interferometers respectively; the reflected light of the second and the third interferometers enters the spectrometer after passing through the coupler; the temperature and the salinity to be measured are simultaneously obtained by performing spectral analysis of the reflected light entering the spectrometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.