Study on the distributed optical fiber sensing technology for pipeline safety detection and location

Abstract

A new distributed optical fiber sensing technology for pipeline safety inspection based on Mach-Zehnder optical fiber interferometer is introduced.The composition and operating principle of the system is specified and the location structure and method is anlayzed.Correlation algorithm is adopted to define the time delay between two measuring signals,thus the location of event along the pipeline could be detected.Theory analysis and experiment result show that the measuring sensitivity and location precision of the measuring system is high and the location error is lower than 300 m.