In a chirped-pulse-based distributed acoustic sensor, we show that exploiting both the amplitude and phase of the fiber fingerprint enables more than a 2-fold reduction in the noise floor, achieving <5 nε strain noise in a 32 km link.
Performance Comparison of Direct and Coherent Detection in Correlation-Based Distributed Fiber-Optic Acoustic Sensing
Stefano Gaiani;Pierpaolo Boffi;
2025-01-01
Abstract
In a chirped-pulse-based distributed acoustic sensor, we show that exploiting both the amplitude and phase of the fiber fingerprint enables more than a 2-fold reduction in the noise floor, achieving <5 nε strain noise in a 32 km link.File in questo prodotto:
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