RT info:eu-repo/semantics/conferenceObject
T1 Characterization and modelling of induced "virtual" perturbations in chirped pulse φ-OTDR
A1 Soriano Amat, Miguel
A1 Marcon, Leonardo
A1 Pereira da Costa, Luis Duarte
A1 García Ruiz, Andrés
A1 Fidalgo Martins, Hugo
A1 Martín López, Sonia
A1 Palmieri, Luca
A1 González Herráez, Miguel
K1 Phase-sensitive OTDR
K1 Rayleigh scattering
K1 Distributed Acoustic Sensing
K1 Electrónica
K1 Electronics
AB Any temperature change or strain acting on a section of the fiber induces a local variation of the refractive index. If the fiber is monitored by a chirped pulse φ-OTDR system, the variation of the refractive index causes a local shift of the backscattering trace and produces a change in the round trip time of the light coming from any further position of the fiber. While usually negligible, due to the high sensitivity of the chirped pulse φ-OTDR, in extreme occasions the distributed round trip time change may appear in the measurement as an undesired “virtual” perturbation. In this paper, we discuss and experimentally validate a mathematical model to account for (and eventually correct) the “virtual” perturbation.
PB SPIE
SN 0277-786X
YR 2019
FD 2019-10-01
LK http://hdl.handle.net/10017/39686
UL http://hdl.handle.net/10017/39686
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 24-abr-2024