Listar Comunicaciones y ponencias de congresos DIEE - IEES Biltzarretako komunikazioak eta txostenak por título
Mostrando ítems 159-178 de 191
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SCATTMAT: a mode matching and generalized scattering matrix code for personal computers in a windows environment
In this paper, a computer aided design tool is presented to simulate symmetrical radially deformed circular waveguide microwave components. This tool works with the well-known “Mode Matching and Scattering Matrix” ... -
SCATTMAT: herramienta C.A.D. para el análisis de componentes en guía de onda circular con variaciones simétricas del radio
In this paper, a C.A.D. tool to simulate simmetrical radial deformation microwave devices, using the modal analysis and scattering matrix techniques is presented. The code has been developed in C++ language, working with ... -
Sculpting metals for anomalous transmission phenomena, complex waves and negative refractive metamaterials: underlying physics and applications
In this talk, the potential of controlling the electromagnetic propagation by periodically-textured surfaces is reviewed. It is shown that backward-wave- and slow-wave-propagation, superluminal, effective negative ... -
Second-order non-local effects mitigation in BOTDA sensors by tracking the BFS profile
We demonstrate a technique to mitigate the residual second-order non-local effects in Brillouin optical time-domain analysis (BOTDA) sensors in which the Brillouin frequency shift (BFS) profile is not uniform along the ... -
Sensing in coin discriminators
This paper describes the technologies used in coin discriminator devices, stressing the improvements and novel mechanisms introduced by the authors in the past few years as a result of the cooperation with one leading ... -
Sensitivity enhancement by diameter reduction in low cutoff wavelength single-mode multimode singlemode (SMS) fiber sensors
Two different low cutoff wavelength single-mode fibers were used in single-mode multimode single-mode (SMS) configuration with the aim of designing sensors operating at short wavelengths, where optical sources and spectrometers ... -
Silver nanoparticles loaded electrospun nanofibers for humidity optical fiber sensing
In this work, a new optical device based on silver loaded electrospun nanofibers (ENFs) for measuring Relative Humidity is proposed. Fiber mats composed of poly(acrylic acid) and β-cyclodextrin were deposited onto an optical ... -
Simplified Brillouin sensor for structural health monitoring applications based on passive optical filtering
We present a simplified configuration for distributed Brillouin optical time domain analysis sensors. The technique is based on passive optical filtering of the spectral components generated in an RF-pulse-modulated optical ... -
Simultaneous and quasi-independent strain and temperature sensor based on microstructured optical fiber
In this paper, a new sensor system for simultaneous and quasi-independent strain and temperature measurements is presented. The interrogation of the sensing head has been carried out by monitoring the FFT phase variations ... -
Simultaneous temperature and vibration monitoring using an all-PM fiber loop mirror interferometer
In this work, an all-polarization maintaining fiber loop mirror interferometer is presented and validated as vibration and temperature sensor without crosstalk between measurands. The system is entirely built using ... -
SnO2 based optical fiber refractometers
In this work, the fabrication and characterization of refractometers based on lossy mode resonances (LMR) is presented. Tin dioxide (SnO2) films deposited on optical fibers are used as the LMR supporting coatings. These ... -
SnO2-MOF-Fabry-Pérot humidity optical sensor system based on Fast Fourier transform technique
In this paper, a new sensor system for relative humidity measurements based on a SnO2 sputtering deposition on a microstructured optical fiber (MOF) low-finesse Fabry-Pérot (FP) sensing head is presented and characterized. ... -
Sources of noise in Brillouin optical time-domain analyzers
This paper presents a thorough study of the different sources of noise affecting Brillouin optical time-domain analyzers (BOTDA), providing a deep insight into the understanding of the fundamental limitations of this kind ... -
Static and dynamic characterization of a supercapacitor
Supercapacitors (SCs) have recently received a major boost as a result of the development of multiple applications, such as the electric vehicle and electric microgrids. Storage systems consisting of SCs combined with ... -
Study of the human eye working principle: an impressive high angular resolution system with simple array detectors
In this paper the working principle of the human eye is studied since uses very simple detectors, cones and rods, to provide an impressive high angular resolution without using any kind of scanning technique. Usually ... -
Suberb gaussian beam efficiency corrugated horn antennas
In this paper we are presenting the possibilities of corrugated horn antennas that combine horizontal and vertical corrugations. -
Synthesis of virtual Brillouin frequency shift profiles in BOTDA sensors using optical source dithering
We demonstrate a novel concept for Brillouin optical time domain analysis sensors that is based on synthesizing a virtual Brillouin frequency shift profile along the sensing fiber. The technique is based on modulating the ... -
Technical specifications and quality control procedures for reducing the uncertainty in PV installations: results of the FP7 project PVCROPS
PVCROPS (PhotoVoltaic Cost r€duction, Reliability, Operational performance, Prediction and Simulation) is a project within the European Framework Programme 7 whose objectives are: improving the performance, reliability ... -
Title enhancement of the sensitivity of a volatile organic compounds MOF-sensor by means of its structure
In this paper, we experimentally compare several core structures of Microstructured Optical Fibers (MOFs) for low-finesse Fabry-Pérot (FP) sensors. These sensors are designed for Volatile Organic Compounds (VOCs) measurements. ...