RT info:eu-repo/semantics/article
T1 Distributed detection of hydrogen and deuterium diffusion into a single-mode optical fiber with chirped-pulse phase-sensitive optical time-domain reflectometry
A1 García Ruiz, Andrés
A1 Morana, Adriana
A1 Pereira da Costa, Luis Duarte
A1 Fidalgo Martins, Hugo
A1 Martín López, Sonia
A1 González Herráez, Miguel
A1 Boukenter, Aziz
A1 Ouerdane, Youcef
A1 Girard, Sylvain
K1 Distributed Optical Fiber Sensors
K1 Nuclear Waste Repositories
K1 Hydrogen
K1 Deuterium
K1 Distributed Chemical Sensing
K1 Chemical sensing
K1 Nuclear Power
K1 Electrónica
K1 Electronics
AB For some infrastructures like oil and gas extraction boreholes or radioactive waste repositories, where distributed optical fiber sensors are employed to grant the safety of the facilities, the presence of gas species such as hydrogen or deuterium is one more relevant parameter to monitor. The possibility of employing the same kind of sensors for this purpose is of special interest, reducing the cost by employing a single interrogator, able to measure more than one parameter by simply employing an adequate sensing fiber. To meet this goal, we present here a sensor based on Chirped Pulse Phase sensitive Optical Time Domain Reflectometry, which is able to detect these species while they diffuse into the silica fiber core. Its ability to measure the induced change of its refractive index with a sensitivity around 10 8 has allowed determining hydrogen concentration in the silica core with precision in the order of 10 3 mol/m3 and spatial resolution ~6 m, while also providing an indirect measurement of the solubility of deuterium in a standard telecom-grade optical fiber.
SN 0146-9592
YR 2019
FD 2019-11-01
LK http://hdl.handle.net/10017/39766
UL http://hdl.handle.net/10017/39766
LA eng
NO European Commission
DS MINDS@UW
RD 28-abr-2024