Fiber Bragg grating interrogation system with adaptive calibration
US5818585A · kind A · utility
36Cited by
5References
12Claims
0Family size
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Key dates
| Filing date | Feb 28, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Feb 28, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/35383
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for providing accurate measurements of the reflected wavelengths from multiple strings of fiber Bragg grating (FBG) elements using a single scanning optical filter and an isolated duplicate reference string of FBG elements. A reference string of FBG elements permits precise long-term wavelength determination of sensors by providing real-time adaptive calibration adjustments to correct for any nonlinearities in the response of the single scanning optical filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.