Title :
An Interferential Fiber-Optic Sensor and Its Demodulation Scheme
Author :
Zhang Yabin ; Wang Na ; Li Xuyou ; Sun Xintong
Author_Institution :
Coll. of Autom., Harbin Eng. Univ., Harbin, China
Abstract :
This paper introduces the basic principle a kind of Mach-Zehnder fiber-optic sensor. We use polarization optics to study the output light intensity. We analyze the direct light source modulation for phase carrier technology in detail. During the process we analyze the PGC (phase generated carrier) demodulation scheme we meet a problem and we improved PGC demodulation scheme to solve it. The improved PGC demodulation scheme is analyzed and verified the effectiveness. of the proposed scheme. And the improved scheme is compared with PZT modulation technology.
Keywords :
Mach-Zehnder interferometers; demodulation; fibre optic sensors; optical fibre polarisation; optical modulation; Mach-Zehnder fiber-optic sensor; PGC demodulation; direct light source modulation; interferential fiber-optic sensor; output light intensity; phase carrier technology; phase generated carrier demodulation; polarization optics; Demodulation; Optical fiber communication; Optical fiber couplers; Optical fiber sensors; Optical interferometry; Phase modulation;
Conference_Titel :
Photonics and Optoelectronics (SOPO), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0909-8
DOI :
10.1109/SOPO.2012.6270913
