Numerical modelling of a distributed acoustic sensor based on ultra-low loss-enhanced backscattering fibers

Van Putten, Lieke, Masoudi, Ali, Snook, James and Brambilla, Gilberto (2021) Numerical modelling of a distributed acoustic sensor based on ultra-low loss-enhanced backscattering fibers. Sensors, 21 (20), [6869]. (doi:10.3390/s21206869).

Record type: Article

Abstract

In this study, a distributed acoustic sensor (DAS) was numerically modeled based on the non-ideal optical components with their noises and imperfections. This model is used to compare the response of DAS systems to standard single-mode fibers and ultra-low loss-enhanced backscattering (ULEB) fibers, a fiber with an array of high reflective points equally spaced along its length. It is shown that using ULEB fibers with highly reflective points improves the signal-to-noise ratio and linearity of the measurement, compared with the measurement based on standard single-mode fibers.

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Accepted/In Press date: 14 October 2021

Published date: 16 October 2021

Additional Information: Funding Information: Funding: This research was funded by the Royal Academy of Engineering, grant number PoC1920\2 and RF1415\14\6, the Royal Society, grant number CHL/R1/180350, and the Natural Environment Research Council, grant number NE/S012877/1.

Keywords: DAS, DVS, distributed acoustic sensor, enhanced backscattering fibers, numerical modelling, phase-OTDR, ultra-low loss

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