RT info:eu-repo/semantics/conferenceObject
T1 Hydrogen and deuterium distributed sensing using Chirped-Pulse φOTDR
A1 García Ruiz, Andrés
A1 Morana, Adriana
A1 Fidalgo Martins, Hugo
A1 Martín López, Sonia
A1 González Herráez, Miguel
A1 Delepine-Lesoille, Sylvie
A1 Boukenter, Aziz
A1 Ouerdane, Youcef
A1 Girard, Sylvain
K1 Distributed optical fiber sensors
K1 Rayleigh scattering
K1 Chemical sensing
K1 Gas diffusion
K1 Radioactive waste storage
K1 Electrónica
K1 Electronics
AB The detection and quantification of the presence of certain chemical species is of central importance regarding permanent structural health monitoring of key industrial fields and civil infrastructures such as oil extraction boreholes or radioactive waste repositories, where H2 is released. With this work we propose and test a competitive technique able to measure the concentration of hydrogen and deuterium thanks to their diffusion into the silica glass of a standard optical fiber, already employed for the distributed monitoring of large infrastructures. The proposed technique, based on Chirped-Pulse Phasesensitive Reflectometry (CP-φOTDR), could represent a novel solution for this problem, thanks to its ability to provide dynamical measurements of refractive index change, with great linearity and sensitivities of 10-8 refractive index units, featuring spatial resolutions of a few meters and kilometric sensing ranges.
PB SPIE
SN 0277-786X
YR 2019
FD 2019-10-01
LK http://hdl.handle.net/10017/39646
UL http://hdl.handle.net/10017/39646
LA eng
NO 7th European Workshop on Optical Fibre Sensors (EWOFS'2019), 01/10/2019-04/10/2019, Limassol, Chipre.
NO European Commission
DS MINDS@UW
RD 27-abr-2024