Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por título
Mostrando ítems 591-610 de 648
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Tailoring light polarization in vertical cavity surface emitting lasers by isotropic optical feedback from an extremely short external cavity
The authors experimentally show that isotropic optical feedback from an extremely short external cavity can induce switching between the two fundamental transverse modes with orthogonal linear polarization of otherwise ... -
Tapered single-mode optical fiber pH sensor based on lossy mode resonances generated by a polymeric thin-film
Lossy mode resonances can be generated with certain polymeric nanostructures, such as those obtained with a multilayered assembly of poly(allylamine hydrochloride) and poly (acrylic acid). This coating is adsorbed by 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 ... -
Tecnologías de alimentación renovable para invernaderos avanzados: diseño, caracterización, dimensionado y captadores fotovoltaicos
El propósito general de esta tesis consiste en el estudio y análisis de los sistemas híbridos eólico-fotovoltaicos de generación de energía eléctrica y su implementación en invernaderos. Concretamente, el trabajo realizado ... -
Temperature sensor based on a hybrid ITOsilica resonant cavity
Integrated optical devices comprised of multiple material systems are able to achieve unique performance characteristics, enabling applications in sensing and in telecommunications. Due to ease of fabrication, the majority ... -
Temperature sensor using a multiwavelength erbium-doped fiber ring laser
A novel temperature sensor is presented based on a multiwavelength erbium-doped fiber ring laser.The laser is comprised of fiber Bragg grating reflectors as the oscillation wavelength selecting filters.The performance of ... -
Terahertz carpet cloak based on a ring resonator metasurface
In this work we present the concept and design of an ultrathin (λ/22) terahertz (THz) unidirectional carpet cloak based on the local phase compensation approach enabled by gradient metasurfaces. A triangular surface bump ... -
Terahertz epsilon-near-zero graded-index lens
An epsilon-near-zero graded-index converging lens with planar faces is proposed and analyzed. Each perfectly-electric conducting (PEC) waveguide comprising the lens operates slightly above its cut-off frequency and has ... -
Terahertz time domain spectroscopy allows contactless monitoring of grapevine water status
Agriculture is the sector with the greatest water consumption, since food production is frequently based on crop irrigation. Proper irrigation management requires reliable information on plant water status, but all the ... -
Terahertz wave transmission in flexible polystyrene-lined hollow metallic waveguides for the 2.5-5 THz band
A low-loss and low-dispersive optical-fiber-like hybrid HE11 mode is developed within a wide band in metallic hollow waveguides if their inner walls are coated with a thin dielectric layer. We investigate terahertz (THz) ... -
Terajets produced by dielectric cuboids
The capability of generating terajets using three-dimensional (3D) dielectric cuboids working at terahertz (THZ) frequencies (as analogues of nanojets in the infrared band) is introduced and studied numerically. The focusing ... -
Theoretical modeling and experimental verification of the scattering from a ferromagnetic microwire
This contribution presents a theoretical modelling of the scattering of ferromagnetic microwires in free-space and inside a rectangular waveguide, providing both an analytical solution and a physical interpretation of ... -
Theory and model of the hyperacuity in the human eye
The hyperacuity of the human eye may be defined as its known capacity to see small details far away from the limitations set by the number and size of the detectors it has. Basically, the problem consists in the fact ... -
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. ... -
A tool for the performance evaluation and failure detection of Amareleja PV plant (Acciona) from SCADA
This paper describes a tool developed for the performance evaluation and failure detection in a 45.6 MWp PV plant installed by the company Acciona in Amareleja (Portugal). The paper describes the PV plant configuration and ... -
Tools for the high penetration of PV systems in the EU electrical networks: results of PVCROPS Project
The Solar Energy Industrial Initiative established the objective of integrating PV into the grid to provide up to 12% of the EU electricity demand. The FP7 project PVCROPS has developed solutions to allow the high penetration ... -
Towards a traceability system based on RFID technology to check the content of pallets within electronic devices supply chain
In the last few years there has been a growing interest in smart solutions capable of dealing with the traceability of products and materials to improve logistical processes. Most of the existing solutions have been ... -
Towards personal privacy control
In this paper we address the realization of personal privacy control in the era of pervasive computing. How could an individual meet his/her expected level of privacy? how could the system guaranty that a user privacy ... -
Transición coaxial a guía doble ridge cargada
In this paper a new method to design a transition from coaxial waveguide to a loaded double ridge waveguide is proposed. This method allows the use of the large frequency bandwidth ridge waveguides present. In the ... -
Transmission spectra changes produced by decreasing compactness of opal-like structures
Artificial opal-like structures based on spheres and colloidal particles have been fabricated in a controlled way, presenting optical band-gap properties in the optical frequency range. Nonclose packed artificial opals ...