We propose and experimentally demonstrate a high-SNR Distributed Acoustic Sensing (DAS) scheme using an array of Ultra-Weak Fiber Bragg Gratings (UWFBGs) with dynamic phase extraction in direct detection based on delayed interferometry and a scalable phase-generated carrier demodulation algorithm requiring no phase unwrapping.
A High-SNR Distributed Acoustic Sensor Based on ϕ-OTDR Using a Scalable Phase Demodulation Scheme Without Phase Unwrapping
Muanenda Y.;Faralli S.;Oton C. J.;Di Pasquale F.
2020-01-01
Abstract
We propose and experimentally demonstrate a high-SNR Distributed Acoustic Sensing (DAS) scheme using an array of Ultra-Weak Fiber Bragg Gratings (UWFBGs) with dynamic phase extraction in direct detection based on delayed interferometry and a scalable phase-generated carrier demodulation algorithm requiring no phase unwrapping.File in questo prodotto:
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