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New filter design methods and topologies for the future microwave and millimeter-wave high-capacity satellites
(2018)
info:eu-repo/semantics/doctoralThesis,
In this thesis, several novel design techniques for waveguide low-pass filters (LPFs) and band-pass filters (BPFs) are proposed. Firstly, a quasi-analytical technique for classical corrugated waveguide LPFs is presented. ...
Strategies for improving the efficiency and grid-connection stability of power converters for wind energy systems
(2018)
info:eu-repo/semantics/doctoralThesis,
La energía eólica es una de las principales fuentes de generación renovable, una tecnología que continúa expandiéndose gracias a la reducción de costes y a la mayor concienciación ambiental de la sociedad. Esta expansión ...
Photonic nanojets with mesoscale high-index dielectric particles
(AIP Publishing, 2019)
Artículo / Artikulua,
In this work, we demonstrate the ability of high-index dielectric particles immersed in air to generate photonic nanojets with extreme resolution (∼0.06λ0). Both 2D (cylindrical) and 3D (spherical) particles are analyzed, ...
On the performance of an ENZ-based sensor using transmission line theory and effective medium approach
(IOP Publishing, 2019)
Artículo / Artikulua,
In this paper we perform an in-depth theoretical studyofa sensing platform based on epsilon-near- zero (ENZ) metamaterials. The structure proposed for sensing is a narrow metallic waveguide channel. An equivalent circuit ...
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 ...
Grating lobes in higher-order correlation functions of arrays of quantum emitters: directional photon bunching versus correlated directions
(MDPI, 2019)
Artículo / Artikulua,
Recent advances in nanofabrication and optical manipulation techniques are making it possible to build arrays of quantum emitters with accurate control over the locations of their individual elements. In analogy with ...
Development of new punctual optical fiber transducer for sensing
(2018)
info:eu-repo/semantics/doctoralThesis,
The international research community has been nurturing photonic technologies over the years, aiming to develop cost effective solutions for a number of applications. Optical fibers offer an efficient solution for sensing ...
Contribution to the development of optical fibre sensors based on microstructured optical fibres to detect gases and volatile organic compounds
(2019)
info:eu-repo/semantics/doctoralThesis,
Desde la primera publicación relacionada con las fibras micro estructuradas (MOFs), el desarrollo de sensores basados en fibra óptica (OFSs), que utilizan este tipo de fibras, se ha visto incrementado atrayendo el interés ...
Contributions to the development of Brillouin distributed sensors for structural health monitoring
(2019)
info:eu-repo/semantics/doctoralThesis,
The main objectives of this thesis is to contribute to the enhancement of the performance of distributed optical ber sensors (DOFS) based on stimulated Brillouin scattering (SBS) by analyzing their limitations and proposing ...
Hybrid method based on topography for robust detection of iris center and eye corners
(ACM (Association for Computing Machinery), 2013)
info:eu-repo/semantics/article,
A multi-stage procedure to detect eye features is presented. Multiresolution and topographic classification are used to detect
the iris center. The eye corner is calculated combining valley detection and eyelid curve ...