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In-field torsion measurements on solar trackers using fiber optic sensors
(Optica, 2020)
Contribución a congreso / Biltzarrerako ekarpena,
In-field torsion measurements on solar trackers using fiber Bragg gratings are presented. 45 FBG sensors have been deployed in an operational solar energy plant to study the mechanical response of the structure to wind.
Application of remote power-by-light switching in a simplified BOTDA sensor network
(MDPI, 2013)
Artículo / Artikulua,
We propose and demonstrate the use of spatial multiplexing as a means to reduce the costs of distributed sensing networks. We propose a new scheme in which remote power-by-light switching is deployed to scan multiple ...
Brillouin optical time-domain analysis sensor assisted by Brillouin distributed amplification of pump pulses
(Optical Society of America, 2015)
Artículo / Artikulua,
We demonstrate the extension of the measurement range of
Brillouin optical time-domain analysis (BOTDA) sensors using a distributed
Brillouin amplifier (DBA). The technique is based on injecting a DBA
pump wave in the ...
Brilloun optical time domain analysis sensor assisted by a Brillouin distributed amplifier
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA)
sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in
the ...
Brillouin optical time-domain analyzer for extended sensing range using probe dithering and cyclic coding
(SPIE, 2017)
Contribución a congreso / Biltzarrerako ekarpena,
We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power ...
Optical fiber sensors for asphalt structures monitoring
(Optica Publishing Group, 2016)
Contribución a congreso / Biltzarrerako ekarpena,
A novel optical fiber installation method was explored for asphalt monitoring. Glassfiber polymer encapsulated SMF was installed in the intermediate and surface layers in order to study the strain sensitivity with a ...
Latest research on long-range Brillouin distributed sensing
(SPIE, 2019)
Contribución a congreso / Biltzarrerako ekarpena,
We review the latest developments in long-range Brillouin optical time-domain analysis sensors. The factors that impair the performance of these sensors, particularly in terms of their distance range, are discussed together ...
Monitorización de deformaciones y temperaturas en la estructura de un túnel artificial de alta velocidad mediante sensores ópticos puntuales, de longitud y distribuidos
(CSIC, 2015)
info:eu-repo/semantics/article,
La monitorización de estructuras es una rama de la ingeniería estructural que está captando mucha atención actualmente. Las deformaciones y temperaturas son, habitualmente, los parámetros monitorizados porque son los que ...
Phase noise effects on phase-sensitive OTDR sensors using optical pulse compression
(IEEE, 2021)
info:eu-repo/semantics/article,
We introduce a detailed theoretical, numerical, and experimental study of the effects of laser's phase noise on the performance of phase-sensitive optical time-domain reflectometry (-OTDR) sensors that use optical pulse ...
Distributed strain sensing with large dynamic range based on two-wavelength phase-sensitive OTDR
(Optica Publishing Group, 2020)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate the use of two-wavelengths to enhance the dynamic range in phase-sensitive OTDR vibration sensors. The system overcomes the phase wrapping con- strains by the synthesis of an equivalent wavelength measurement.