Fiber-optic perimeter security system based on dual Mach-Zehnder interferometer structure

Jishan Jiang; Yi Jiang; Da Liu; Sumei Wang; Xiaowei Li

doi:10.3788/gxjs20154103.0193

Fiber-optic perimeter security system based on dual Mach-Zehnder interferometer structure

Jishan Jiang^*, Yi Jiang, Da Liu, Sumei Wang, Xiaowei Li

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A perimeter security system based on dual Mach-Zehnder interferometer is designed and researched. A cross-correlation algorithm is adopted to calculate the time difference of signals on two channels for locating invasion points. By means of processing data in segment, the stability and accuracy of system is improved effectively. An experiment with 2-kilometer-long sensing fiber is carried out, which shows that the dual Mach-Zehnder perimeter protection system can identify the position of vibration instantaneously and has a location accuracy of 200 meters at a sampling frequency of 2M, ensures stable long-time work as well.

Original language	English
Pages (from-to)	193-196
Number of pages	4
Journal	Guangxue Jishu/Optical Technique
Volume	41
Issue number	3
DOIs	https://doi.org/10.3788/gxjs20154103.0193
Publication status	Published - 1 May 2015

Keywords

Mach-Zehnder interferometer (MZI)
Optical fiber sensor
Perimeter protection

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Jiang, J., Jiang, Y., Liu, D., Wang, S., & Li, X. (2015). Fiber-optic perimeter security system based on dual Mach-Zehnder interferometer structure. Guangxue Jishu/Optical Technique, 41(3), 193-196. https://doi.org/10.3788/gxjs20154103.0193

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AB - A perimeter security system based on dual Mach-Zehnder interferometer is designed and researched. A cross-correlation algorithm is adopted to calculate the time difference of signals on two channels for locating invasion points. By means of processing data in segment, the stability and accuracy of system is improved effectively. An experiment with 2-kilometer-long sensing fiber is carried out, which shows that the dual Mach-Zehnder perimeter protection system can identify the position of vibration instantaneously and has a location accuracy of 200 meters at a sampling frequency of 2M, ensures stable long-time work as well.

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Fiber-optic perimeter security system based on dual Mach-Zehnder interferometer structure

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Keywords

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