13 May 2015 Fiber Bragg grating interrogation using a micro-ring resonator tunable filter with peak wavelength detection enhancement
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Abstract
This work presents a demodulation technique using a silicon micro-ring resonator that extracts wavelength information from a FBG sensor. The device implements an interrogation system employing a signal processing technique that translates the peak wavelength position of a FBG spectral line into a time interval measurement. To determine the peaks, three techniques were applied. One was based on a simple maximum detection algorithm, the other two, enhanced the detected signal by applying a finite impulse filter (FIR) and a smoothing filter. Results show an improvement of the wavelength measurement using the filtering technique compared to the maximum peak detection.
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German Vargas, German Vargas, } "Fiber Bragg grating interrogation using a micro-ring resonator tunable filter with peak wavelength detection enhancement", Proc. SPIE 9480, Fiber Optic Sensors and Applications XII, 94800P (13 May 2015); doi: 10.1117/12.2179044; https://doi.org/10.1117/12.2179044
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