Analysis of the Interference Signal of the Distributed Optical Fiber Sensing Based on DSP

Tingting Du, Xiong Wan, Zhimin Zhang, Huming Zhang, Qing Zhang

1Key Laboratory of Nondestructive Testing(Ministry of Education), Nanchang Hangkong University, Nanchang, Jiangxi, China 2Key Laboratory of Spatial Active Opto-electronic Techniques, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, China.
Key Laboratory of Nondestructive Testing(Ministry of Education), Nanchang Hangkong University, Nanchang, Jiangxi, China.

DOI: 10.4236/opj.2013.32B030                

Abstract

In this paper, the author analyzes characteristics and extracting method of interference signal of the distributed optical fiber sensing. In the distributed optical fiber sensing, realizing alarm and positioning function only through the cross-correlation operation will increase the load of the system, can make misinformation rate of the system be improved greatly. Therefore, before the localization algorithm, adding a interference signal feature recognition is very necessary, can reduce unnecessary operation loss and reduce the load of the system, also reducing the number of the false positives.

Keywords

The Optical Fiber Sensing; Mach-zehnder Interferometer; Energy; Interference Signal; Signal Recognition

Conflicts of Interest

The authors declare no conflicts of interest.

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