Fiber Bragg Grating Interrogation System With Adaptive Calibration
Patent, filed 28 Feb 97, patented 6 Oct 98
DEPARTMENT OF THE NAVY WASHINGTON DC
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The invention pertains to 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.
- Optical Detection and Detectors
- Fiber Optics and Integrated Optics