Optical fiber-based sensor for determining the concentration of fluoride in water
US11668652B2 · kind B2 · utility
0Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2020 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Jul 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8528
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluoride sensor includes an aluminum layer situated on a distal end face of an optical fiber. A light source directs light into the optical fiber at a proximal end and reflected light from the aluminum layer at the distal end face is directed by the fiber to a detector. A rate of change of a detector signal is processed to produce an estimate of a concentration of fluoride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.