@inproceedings{416996c844c7437fb5844e4fd298779c,
title = "Distributed optical fiber microphone",
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.",
keywords = "Distributed acoustic sensing, Rayleigh scattering, optical fiber, optical microphone",
author = "Zamarreno, \{C. R.\} and C. Martelli and R. Daciuk and G. Dutra and Dreyer, \{U. J.\} and \{Cardozo Da Silva\}, \{J. C.\} and Matias, \{I. R.\} and Arregui, \{F. J.\}",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 16th IEEE SENSORS Conference, ICSENS 2017 ; Conference date: 30-10-2017 Through 01-11-2017",
year = "2017",
month = dec,
day = "21",
doi = "10.1109/ICSENS.2017.8234126",
language = "English",
series = "Proceedings of IEEE Sensors",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1--3",
booktitle = "IEEE SENSORS 2017 - Conference Proceedings",
address = "United States",
}