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Capturing Acoustic Speech Signals with MIMO Phase-OTDR

09 December 2020

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We demonstrate the identification by listening test of an acoustic perturbation made of a 6kHz bandwidth speech signature reaching a 1km long SMF. The fiber is probed with a phase-OTDR over two orthogonal polarization axes and the backscattered signal is received by a coherent mixer (MIMO sensing) which mitigate fading effects