Open AccessHigh-frequency high-resolution distributed acoustic sensing by optical frequency domain reflectometry
Author(s) -
Leonardo Marcon,
Andrea Galtarossa,
Luca Palmieri
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.013923
Subject(s) - distributed acoustic sensing , reflectometry , optics , image resolution , acoustics , frequency domain , spatial frequency , noise (video) , phase (matter) , materials science , time domain , remote sensing , computer science , fiber optic sensor , optical fiber , physics , geology , quantum mechanics , artificial intelligence , image (mathematics) , computer vision
A data analysis algorithm for OFDR-based distributed acoustic sensing (DAS) is proposed, which achieves high acoustic bandwidths of tens of kilohertz with sharp spatial resolutions in the order of centimeters. The non-idealities of the setup as well as the phase noise affecting the measurement are analyzed and a method to compensate them is experimentally demonstrated. The performance of the sensor is evaluated by extensive experimental tests, showing the viability of the proposed technique to achieve high frequency and high spatial resolution distributed acoustic sensing.