Patent ID: 11953389
Assignee: INTELLIGENT FIBER OPTIC SYSTEMS CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A measurement system comprising a plurality of fiber Bragg grating (FBG) sensors arranged on a single optical fiber, the plurality of FBGs operating in a shared range of wavelengths such that at least one FBG sensor reflects optical energy at a same wavelength as another FBG sensor, the plurality of FBGs receiving optical power from an optical interrogator;
each FBG of the plurality of FBGs having a unique full width half max (FWHM) bandwidth, each of the plurality of gratings reflecting less than 10% of an incoming optical power;
the optical interrogator receiving reflected optical power, the optical interrogator having at least one optical detector operative to measure reflected optical power at a plurality of wavelengths;
the optical interrogator operative to generate a representation of response power vs wavelength;
the optical interrogator operative to identify for a peak response, at least one of: a standard deviation, a Full Width Half Maximum (FWHM) value, or a bandwidth;
the optical interrogator subtracting a response corresponding to a closest match response of the representation and associating a wavelength to the subtracted response.