Title :
Noise limit in heterodyne Interferometer demodulator for FBG-based sensors
Author :
Shi, C.Z. ; Ho, H.L. ; Jin, W. ; Chan, C.C. ; Chan, P.K.C. ; Zhou, Y. ; Liao, Y.B.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., China
Abstract :
This paper reports the results of a recent investigation on the noise-limited performance in heterodyne interferometric demodulation systems for fiber Bragg grating strain sensors. Theoretical and simulation results are presented and compared with experimental results.
Keywords :
Bragg gratings; demodulation; fibre optic sensors; heterodyne detection; light interferometry; optical noise; strain sensors; FBG-based sensors; Fiber Bragg grating; dynamic strain; heterodyne interferometer demodulator; heterodyne interferometric demodulation; noise limit; strain sensors; Arm; Bragg gratings; Capacitive sensors; Demodulation; Fiber gratings; Frequency; Optical interferometry; Phase detection; Sensor systems; Strain measurement; Dynamic strain; fiber Bragg grating; heterodyne interferometric demodulation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.833265
