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 ...
[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 ...
[EN] We demonstrate a simple way to fabricate phase-shifted fiber Bragg grating in polymer optical fibers as a narrowband transmission filter for a variety of applications at telecom wavelengths. The filters have been ...
[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 ...
Ortega Tamarit, Beatriz; Mora Almerich, José; Chulia, R.(Institute of Electrical and Electronics Engineers (IEEE), 2016-06)
This paper proposes an optical beamforming network for a 2-D array antenna in a broad direction range with subarray antenna partitioning capability. With reasonable cost and volume, this optical true time delay beamformer ...
Triana Infante, Cristian Andrés; Pastor Abellán, Daniel; Varón, Margarita(Sociedad Espanola de Optica, 2016)
[EN] The design of spectrally encoded fiber Bragg grating (FBG) sensors is proposed in order to incorporate more information in the optical measurement system. This information can provide full distinction between sensors ...
Barrera Vilar, David; Finazzi, Vittoria; Villatoro, Joel; Sales Maicas, Salvador; Pruneri, Valerio(Institute of Electrical and Electronics Engineers (IEEE), 2012-01)
We report on temperature sensors based on regenerated fiber Bragg gratings (RFBGs) for measurements up to 1100°C. The annealing process required to regenerate such gratings makes the optical fiber too delicate, thus making ...
[EN] We experimentally demonstrate the first polymer optical fiber Bragg gratings inscribed with only one Nd: YAG laser (266 nm) pulse. The gratings have been inscribed in a single-mode poly (methyl methacrylate) optical ...
Madrigal-Madrigal, Javier; Barrera, David; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers, 2020-08)
[EN] Multiple regenerated fiber Bragg gratings were inscribed in all the cores of a seven-core fiber in order to develop a multi-parameter sensor designed to operate at high temperatures. We experimentally showed the ...
Ricchiuti, Amelia Lavinia; Sales Maicas, Salvador(Optical Society of America, 2016-02-10)
[EN] A simple scheme for interrogating a 5 m-long photonics device and its potential applications to quasi-distributed fiber sensing is proposed. The sensor consists of an array of 500 identical very weak fiber Bragg ...
[EN] A compact optical fiber sensor by embedding fiber Bragg gratings (FBGs) in strongly coupled multicore fiber (SCMCF) is proposed for multipoint and multiparameter sensing. To build the device, two FBGs with different ...
Ricchiuti, Amelia Lavinia; Barrera Vilar, David; Nonaka, Koji; Sales Maicas, Salvador(Optical Society of America, 2014-10-01)
A photonic sensor based on a 10-cm-long fiber Bragg grating (FBG) is presented and experimentally validated that is dedicated to detect the presence and the position of a temperature gradient. The system is based on the ...
[EN] We have inscribed a tilted fiber Bragg grating (TFBG) in selected cores of a multicore optical fiber. The presence of the TFBG permits to couple light from the incident guided mode to the cladding modes and to the ...
Amaya Ocampo, Waldimar Alexander; Pastor Abellán, Daniel; Baños López, Rocío; García Muñoz, Víctor(Optical Society of America, 2011)
We theoretically propose and demonstrate experimentally a Coherent Direct Sequence OCDMA en/decoder for multi-channel WDM operation based on a single device. It presents a broadband spectral envelope and a periodic spectral ...