Interferometric noise suppression in fiber Bragg grating sensors by using wavelet filter

Wavelet digital filter is designed and demonstrated to reduce the wavelength detection error caused by interferometric noise in a fiber Bragg grating (FBG) strain sensor. Simulation and experimental results show that the wavelet filtering technique is a promising approach to enhance the detection accuracy of the FBG strain sensor. (Received May 31, 2010; accepted June 16, 2010)