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We present an optical fiber voltage sensor by Michelson interferometer (MI) employing a Fabry–Perot (F–P) tunable optical filter and the phase generated carrier demodulation algorithm. By mounting an MI fabricated by an optical fiber coupler on a piezoelectric transducer, a dynamic strain would be generated to change the phase difference of the interferometer when the measured voltage is applied on...
We demonstrate a polarization-interference-based fiber vibration sensor by incorporating a Sagnac interferometer based on a polarization-diversity loop structure composed of a polarization beam splitter, polarization-maintaining photonic crystal fiber, and polarization controllers. A laser diode and a photodetector were used to implement a high-speed intensity-based sensor. By using a piezoelectric...
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