Forward-transmission coherent-detection DVS achieves >50 dB SNR and <50 m resolution for 400 Hz-10 kHz vibrations over 1008 km fiber using loop-back fiber pair.
Continuous and Damped Vibration Detection Based on Fiber Diversity Detection Sensor by Rayleigh Backscattering,
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Distributed vibration sensing based on forward transmission and coherent detection
Forward-transmission coherent-detection DVS achieves >50 dB SNR and <50 m resolution for 400 Hz-10 kHz vibrations over 1008 km fiber using loop-back fiber pair.