[EN] This work describes the use of FBGs inscribed in optical fiber with electrodes for voltage
sensing. The results show a quadratic voltage dependence. The device can be explored for a multipoint, single-ended voltage ...
Clement, Juan; Torregrosa, German; Hervás-Peralta, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Fernandez-Pousa, Carlos R.(Institute of Electrical and Electronics Engineers (IEEE), 2016-05-15)
[EN] Incoherent Optical Fourier-Domain Reflectometry incorporating a dispersive delay line is used for the interrogation of an array of three identical fiber Bragg gratings with a Bragg wavelength of 1552.81 nm, reflectivity ...
Hervás-Peralta, Javier; Tosi, Daniele; García-Miquel, Héctor; Barrera Vilar, David; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers, 2017)
[EN] The Karhunen-Loeve transform (KLT) is used to
retrieve the wavelength information of several fiber Bragg
gratings (FBGs) that are acting as a multiplexed sensor. The
modulated light of a broadband source is launched ...
Ricchiuti, Amelia Lavinia; Barrera Vilar, David; Sales Maicas, Salvador; Thevenaz, Luc; Capmany Francoy, José(Optical Society of America, 2013-11-18)
A novel technique for interrogating photonic sensors based on long fiber Bragg gratings (FBGs) is presented and experimentally demonstrated, dedicated to detect the presence and the precise location of several spot events. ...
Barrera Vilar, David; Madrigal-Madrigal, Javier; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers, 2018)
[EN] Multicore optical fibers are especially attractive for the fabrication of curvature and shape sensors due to the spatial distribution of the different cores. Fiber Bragg gratings have been used in the past for the ...
A system to interrogate photonic sensors based on long weak fiber Bragg gratings (FBGs) is illustrated and experimentally demonstrated. The FBG sensor is able to detect and measure the precise location of several spot ...
García Miquel, Ángel Héctor; Barrera Vilar, David; Amat, Rafael; Kurlyandskaya, G. V.; Sales Maicas, Salvador(Elsevier, 2016-02)
We have designed a temperature and strain monitoring system for a magnetic actuator
based on the giant magnetostrictive material Terfenol-D (Tb0.3 Dy0.7Fe1.92) with Fiber
Bragg grating (FBG) sensors. Magneto-elastic ...
We have designed a magneto-optical sensor based on fiber Bragg grating (FBG) and
Metglas 2605CO (Fe67Co18B14Si1) material with magnetostriction coefficient of 35ppm. The FBG
sensor is glued between two sheets of Metglas. ...
Landazábal Durán, Leila Dayani(Universitat Politècnica de València, 2013-07-11)
[ES] - En este trabajo se describen los diferentes métodos desarrollados para la medida del perfil del índice de refracción en fibras ópticas y se hace un énfasis especial en el método RNF (Refractive Index Near Field), ...
Zheng, Di; Madrigal-Madrigal, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Capmany Francoy, José(Institute of Electrical and Electronics Engineers, 2017-10-15)
[EN] We propose and experimentally demonstrate an approach to perform high-resolution and temperature-insensitive interrogation of a fiber Bragg grating (FBG)-based multicore fiber (MCF) curvature sensor using a microwave ...
Hervás-Peralta, Javier; Barrera Vilar, David; Madrigal-Madrigal, Javier; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers, 2018)
[EN] An interrogation technique of cascaded FBG sensors
based on a microwave photonics filtering technique under coherent
regime is presented. The sensing information of a 5-m fiber
coil containing 500 weak FBG with a ...
A system to interrogate photonic sensors based on a very weak fiber Bragg grating cascade fiber is presented and experimentally validated and dedicated to detecting the presence and location of a spot event. The distributed ...
[EN] We review the introduction of the space dimension into fiber-based technologies to
implement compact and versatile signal processing solutions for microwave and millimeter wave
signals. Built upon multicore fiber ...
Khan, Fouzia; Denasi, Alper; Barrera, David; Madrigal-Madrigal, Javier; Sales Maicas, Salvador; Misra, Sarthak(Institute of Electrical and Electronics Engineers, 2019-07-15)
[EN] This paper presents a technique to reconstruct the shape of a flexible instrument in three-dimensional Euclidean space based on data from fiber Bragg gratings (FBGs) that are inscribed in multi-core fibers. Its main ...
[EN] A simple, spectral-drift-insensitive interrogation scheme for
a multicore fiber Bragg grating (FBG)-based directional
curvature sensor is proposed. The basic principle is to transform
the wavelength shift of FBGs into ...
[EN] We have designed and implemented a fiber optic shape sensor for high-energy ionizing environments based on multicore optical fibers. We inscribed two fiber Bragg gratings arrays in a seven-core optical fiber. One of ...
Barrera Vilar, David; Gasulla Mestre, Ivana; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers (IEEE), 2015-06-17)
We have implemented a multipoint two-dimensional curvature optical fiber sensor based on a non-twisted homogeneous four-core fiber. A theoretical approach to model the mechanical behavior of these fibers under curvature ...
[EN] Forward Brillouin scattering interactions support the sensing and analysis of media outside the cladding boundaries of standard fibers, where light cannot reach. Quantitative point-sensing based on this principle has ...
Bueno Martínez, Antonio; Torres Górriz, Benjamín; Barrera Vilar, David; Calderón García, Pedro Antonio; Lloris, J.; López, M.; Sales Maicas, Salvador(Society of Photo-optical Instrumentation Engineers (SPIE), 2011)
We present the results of a real fire test using optical fiber sensors embedded in concrete samples. The temperature curve used in this experiment is described in the Spanish/European standard UNE-EN 1363-1 temperature ...
[EN] Optical fibers containing multiple cores are being developed towards capacity enhancement in space-division multiplexed optical communication networks. In many cases, the fibers are designed for negligible direct ...