RT info:eu-repo/semantics/conferenceObject
T1 Brillouin optical time-domain analysis over a 240 km-long fiber loop with no repeater
A1 Angulo Vinuesa, Xabier
A1 Soto Hernández, Marcelo Alfonso
A1 Martín López, Sonia
A1 Chin, S.H.
A1 Ania Castañón, Juan Diego
A1 Corredera, Pedro
A1 Rochat, Etienne
A1 González Herráez, Miguel
A1 Thévenaz, Luc
K1 Brillouin scattering
K1 Raman scattering
K1 Distributed optic fiber sensor
K1 Optical pulse coding
K1 Strain sensing
K1 Temperature sensing
K1 Ciencias tecnológicas
K1 Electrónica
K1 Technology
K1 Electronics
AB In this paper we combine the use of optical pulse coding and seeded second-order Raman amplification to extend thesensing distance of Brillouin optical time-domain analysis (BOTDA) sensors. Using 255-bit Simplex coding, the powerlevels of the Raman pumps and the Brillouin pump and probe signals were adjusted in order to extend the real physicalsensing distance of a BOTDA sensor up to 120 km away from the sensor interrogation unit, employing a 240-km longloop of standard single-mode fiber (SSMF) with no repeater. To the best of our knowledge, this is the first time thatdistributed measurements are carried out over such a long distance with no active device inserted into the entire sensingloop, constituting a considerable breakthrough in the field.
PB Society of Photo Optical Instrumentation Engineers (SPIE)
SN 978-0-81949-103-9
SN 0277-786X
YR 2012
FD 2012-10-15
LK http://hdl.handle.net/10017/26584
UL http://hdl.handle.net/10017/26584
LA eng
NO 22nd International Conference on Optical Fiber Sensors (OFS2012), Beijing, China, October 14, 2012.
NO Ministerio de Ciencia e Innovación
DS MINDS@UW
RD 18-abr-2024