Abstract
In this paper, a simple and low cost optical fiber sensing technology by using loop transmission polarization detection and cross-correlation algorithm for long distance vibration measurement is presented and investigated. Firstly, the influence mechanism of external disturbance on the polarization state of transmission light in sensing fiber is analyzed theoretically, and then the feasibility of the vibration sensing through polarization state detection is verified and corresponding experiments are carried out to evaluate the performance of the scheme. The results confirm that the proposed system can achieve a sensing distance of 200 km with a detection frequency ranging from 100 Hz to 100 kHz and a relative location error around 0.533%, meanwhile the influence of polarization-induced fading and trapped wave can also be avoided that provides a cost-effective solution for long distance disturbance monitoring.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
