Title :
Techniques of Polarization State Control for Interferential Distributed Optic-Fiber Sensing System
Author :
Caihong, Ma ; Haitong, Wang ; Hang, Song
Author_Institution :
Opt. Fiber Commun. Lab. of Eng., Coll. of Armed Police Force, Xian, China
Abstract :
In the long distance distributed optic-fiber sensing system, the polarization state of output light tends to drift, which influences the sensing system interference effect. Aiming at the typical Mach-Zehnder distributed optic-fiber leak detection system, analyzes theoretically the influence of polarization degradation on the system performance, elaborates the technologies using the PDR and FRM to control the polarization state. Simulation results indicate these two technologies can achieve good effect of polarization control.
Keywords :
Faraday effect; distributed sensors; fibre optic sensors; leak detection; light interference; light polarisation; mirrors; optical control; optical receivers; Faraday rotation mirror; Mach-Zehnder distributed optic-fiber leak detection system; interference effect; interferential distributed optic-fiber sensing system; polarization degradation; polarization diversity receiver; polarization state control; Faraday Rotation Mirror; Mach-Zehnder; Optic-fiber Sensing System; Polarization Diversity Receiver; Polarization State;
Conference_Titel :
Digital Manufacturing and Automation (ICDMA), 2010 International Conference on
Conference_Location :
ChangSha
Print_ISBN :
978-0-7695-4286-7
DOI :
10.1109/ICDMA.2010.181
