Diane Prato, Mehran Mokhtari Sheramin
In this work, we introduce and experimentally validate a numerical model for a Multiple-Input-Multiple-Output Distributed Acoustic Sensing (MIMO-DAS) system that accounts for dynamic perturbations of fiber birefringence and of the common optical phase of the backscattered signal. The MIMO-DAS system probes the fiber using polarization-multiplexed constant-power coded sequences suitable for coexistence with WDM data transmission. We investigate the impact of both axisymmetric and anisotropic events on effective birefringence and common phase. Through numerical simulations and laboratory experiments, we demonstrate the effective birefringence estimation under static conditions and the joint estimation of common phase and effective birefringence under dynamic conditions, particularly with longitudinal and transverse strains. This approach enhances event discrimination and sensitivity to transverse disturbances, as the polarization measures deviations from cylindrical symmetry while the phase responds strongly to longitudinal strains.
@article{52e7dc17-94f7-4f2a-8c92-afcdd05c97f9,
title={2026 Prato MIMO Distributed Acoustic Sensing},
author={Diane Prato and Mehran Mokhtari Sheramin},
year={2026},
language={en}
}TY - JOUR TI - 2026 Prato MIMO Distributed Acoustic Sensing AU - Diane Prato AU - Mehran Mokhtari Sheramin PY - 2026 LA - en ER -
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