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Study on Fiber Polarimetric Vibration Sensor Based on Polarization-Maintaining Photonic Crystal Fiber
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 Title & Authors
Study on Fiber Polarimetric Vibration Sensor Based on Polarization-Maintaining Photonic Crystal Fiber
Kim, Young-Suk; Park, Kyongsoo; Lee, Yong Wook;
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In this paper, we implemented a polarimetric vibration sensor using a Sagnac birefringence interferometer composed of polarization-maintaining photonic crystal fiber(PM-PCF). By changing the amplitude and frequency of vibration applied to PM-PCF employed as the sensor head of the proposed sensor, sensor responses to various types of vibration were investigated. First, the vibration characteristic of the sensor was explored for a single frequency in a frequency range from 1 to 3000Hz with a cylindrical piezoelectric transducer, and then the sensor response to naturally damped vibration was examined by utilizing a metal cantilever. It was experimentally observed that the sensor output signal was deteriorated by more than 3dB at ~1900Hz in the single frequency vibration measurement with a minimum detectable strain perturbation of at 1500Hz and the peak value of the sensor output signal was proportional to the strength of initially applied stress in the naturally damped vibration measurement.
Photonic Crystal Fiber;Vibration Sensor;Sagnac Interferometer;Birefringence;
 Cited by
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