Apparatus for interrogating fibre Bragg gratings
US8339591B2 · kind B2 · utility
7Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Nov 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for interrogating an optical fiber comprising a plurality of fiber Bragg gratings each having a resonant wavelength in a different discrete wavelength band. The apparatus comprises a delay arrangement interposed in use in an optical path for light supplied to and/or reflected from the fiber Bragg gratings. The delay arrangement is configured to apply a different time delay to light in each of the discrete wavelength bands, whereby the light reflected from each of the fiber Bragg gratings is received at an interrogator port of the apparatus in a different discrete time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.