Youngwoong Kim, M. Kim, Young Ho Kim, Hui-Seop Kim, B. Rho
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Fiber-optic Interferometric Vibration Sensor without Phase Bias induced Signal Fading
We propose a simple fade-free fiber-optic interferometer for vibration sensing. A 90° optical hybrid based quadrature detection with subsequent π/2 phase shifting technique has shown to be fully free from the phase bias induced fading.
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