Fiber-optic interrogator with normalization filters
US7683312B2 · kind B2 · utility
21Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2008 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Oct 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0204
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optic interrogator includes a broadband optical source, at least one beam splitter directing output of the optical source to an array of fiber optic gratings, at least one linear transmission or reflection filter, at least one optical receiver and at least one amplifier associated with each receiver. In one aspect of the invention, a pair of opposite-sloped linear transmission filters are utilized to normalize the received and filtered reflections with respect to total optical power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.