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 ...
Single Indium Arsenide Quantum Dot emission spectra have been recorded using a four-core, crosstalk-free, multicore fiber placed at the collection arm of a confocal microscope. We developed two different measurement set-ups ...
Madrigal-Madrigal, Javier; Barrera Vilar, David; Sales Maicas, Salvador(Institute of Electrical and Electronics Engineers, 2019-09-15)
[EN] Multicore optical fibers are of great interest in the optical sensing field. Their core diversity and spatial distribution enable the development of sensing mechanisms that are not possible in single-core fibers. In ...
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 ...
[EN] We propose and experimentally demonstrate distributed microwave photonics signal processing over a few-mode fiber link by implementing 4-sample true time delay line operation. The inscription of a set of long period ...
A humidity and temperature optical fiber sensor based on a long-period grating (LPG), which can provide simultaneous response to both magnitudes, is proposed and demonstrated via experiments. Previously, the LPG was fully ...
[EN] The use of Spatial Division Multiplexing for Microwave Photonics signal processing is proposed and experimentally demonstrated, for the first time to our knowledge, based on the selective inscription of Bragg gratings ...
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 ...
Soto, Marcelo A.; Ricchiuti, Amelia Lavinia; Zhang, Liang; Barrera Vilar, David; Sales Maicas, Salvador; Thevenaz, Luc(Optical Society of America: Open Access Journals, 2014-11-17)
A technique to enhance the response and performance of Brillouin distributed fiber sensors is proposed and experimentally validated. The method consists in creating a multi-frequency pump pulse interacting
with a matching ...
[EN] Photoluminescence and time resolved photoluminescence from single metamorphic
InAs/GaAs quantum dots (QDs) emitting at 1.3 micrometers have been measured by means of a novel
fibre-based characterization set-up. We ...
Sancho Durá, Juan; Chin, Sanghoon; Barrera Vilar, David; Sales Maicas, Salvador; Thevenaz, Luc(Optical Society of America, 2013-03-25)
A new technique to investigate the spatial distribution of the reflection spectrum along fabricated long weak fiber Bragg gratings (FBG) is experimentally demonstrated, together with its potential applications for distributed ...
Moreno, Vanessa; Mora Almerich, José; Barrera Vilar, David; Muriel, M.A.; Capmany Francoy, José(Institute of Electrical and Electronics Engineers (IEEE), 2016-11-01)
In this letter, we propose and experimentally demonstrate an efficient and scalable photonic superstructure employed for ultrawideband (UWB) pulses modulation purposes. This design is based on the combination of a phase ...