Interrogator for a plurality of sensor fiber optic gratings having at least one filter for converting changes in peak reflection wavelength to changes in intensity
US7994469B2 · kind B2 · utility
19Cited by
2References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Mar 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0204
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; at least one amplifier associated with each optical receiver; and an active closed-loop circuit following the at least one amplifier to provide bias voltage stabilization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.