Fiber Bragg grating interrogation using a micro-ring resonator tunable filter with peak wavelength detection enhancement

German Vargas

doi:10.1117/12.2179044

13 May 2015 Fiber Bragg grating interrogation using a micro-ring resonator tunable filter with peak wavelength detection enhancement

German Vargas

Author Affiliations +

Proceedings Volume 9480, Fiber Optic Sensors and Applications XII; 94800P (2015) https://doi.org/10.1117/12.2179044
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.2179044

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