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- W2782034981 abstract "A distributed acoustic sensing (DAS) optical fiber system has been studied using intensity-based optical time-domain reflectometry (i-OTDR). The fiber strain originated by sound waves (pressure waves) is in general quite small to enable the detection using conventional Rayleigh backscattering intensity based systems (low signal to noise ratio). Here, a 10 m portion of optical fiber has been rolled following a plane spiral shape in order increase the fiber surface subjected to the acoustic waves pressure and improve the signal to noise ratio (SNR). The performance of the system within the human voice frequency range (300-3400Hz) has been studied showing to effectively acquire voice signals at different points along a ~2.5 Km fiber." @default.
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- W2782034981 date "2017-10-01" @default.
- W2782034981 modified "2023-10-14" @default.
- W2782034981 title "Distributed optical fiber microphone" @default.
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- W2782034981 doi "https://doi.org/10.1109/icsens.2017.8234126" @default.
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