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Intrusion Sensor Using Fiber-Optic Mach-Zehnder Interferometer  

Park, Hyoung-Jun (Division of Electronics and Information Engineering, Chonbuk National University)
Song, Min-Ho (Division of Electronics and Information Engineering, Chonbuk National University)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.26, no.4, 2006 , pp. 255-259 More about this Journal
Abstract
For the intruder detection, a buried fiber-optic sensor based on fiber-optic Mach-Zehnder interferometer is demonstrated. We buried the sensor arm in a styrene board and exerted pressure on it. The pressure-induced deformation speed has almost linear relationship with the output frequencies of the interference signals, and about 4.25 Hz frequency change per 0.01m/s was obtained. Also it has been shown that the amplitude of frequency component increases according to the weight of mass.
Keywords
Intrusion Sensor; Fiber-Optic Sensor; Mach-Zehnder Interferometer;
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