Fiber optic sensor for measurement of carbon dioxide
US9891166B2 · kind B2 · utility
6Cited by
3References
21Claims
0Family size
Inventors
Key dates
| Filing date | Nov 3, 2014 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Fiber optic sensors include sensor regions in which an optical phase is modulated by an analyte to be detected. A long period fiber grating (LPG) is coupled to a coating that is arranged to selectively interact with the analyte. The resulting phase change is detected based on a transmission spectrum associated with the LPG so that analyte is detected and quantified. A plurality of such sensors is distributed along a fiber to form a sensor array that can be situated to detect analyte at a plurality of discrete regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.