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

Claim 10:
11. A sensor system comprising:
a plurality n of Fiber Bragg Gratings (FBG) arranged on a single optical fiber, each FBG having a unique standard deviation σ;
a tunable laser coupling optical energy into the plurality of FBGs;
a detector operative to measure reflected optical power from the plurality of FBGs;
a controller operative to generate a response plot g(x) of power vs wavelength, the power measured by the detector and the wavelength varied by the tunable laser to form the response plot;
the controller operative to iteratively identify a peak response and subtract a proposed FBG response from the response plot to generate a residue;
the controller continuing to iteratively identify a peak response and subtract a proposed FBG response until the residue is below a threshold, or a number n of iterations have been performed;
where the tunable laser has a bandwidth which is narrower than a narrowest bandwidth of a sensor FBG by a factor of at least 4.