Title :
Study of PGC Demodulation Scheme for Interferometric Fiber-Optic Sensors
Author :
Zhang Yabin ; Wang Na ; Li Xuyou ; Sun Xintong
Author_Institution :
Coll. of Autom., Harbin Eng. Univ., Harbin, China
Abstract :
PGC (phase generated carrier) demodulation scheme is used widely in fiber-optic sensors. In this paper, we analyzed what factors affect the demodulation effect of PGC scheme. We studied and simulated the relationship between the upper limit and the frequency of the carrier. We studied how signal´s amplitude and frequency affect the demodulation effect. At last, we drew a conclusion that we must increase the frequency of the carrier to get better demodulation effect and ability.
Keywords :
demodulation; fibre optic sensors; light interferometry; optical modulation; PGC demodulation; carrier frequency; interferometric fiber-optic sensors; phase generated carrier demodulation; signal amplitude; Demodulation; Dynamic range; Educational institutions; Low pass filters; Optical fiber filters; Optical fiber sensors; Time frequency analysis;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0909-8
DOI :
10.1109/SOPO.2012.6270912
