Listar Artículos de revista DIEE - IEES Aldizkari artikuluak por título
Mostrando ítems 270-289 de 391
-
Performance comparison and design guidelines for Type II and Type III PLLs
Ugarte Gil, Mikel
; Carlosena García, Alfonso 
(Birkhauser, 2015)
Artículo / Artikulua 
The advantages provided by Type III PLLs are poorly known, since these devices are very often considered unstable and difficult, or even impossible, to design. In this paper, a performance comparison between Type II and ... -
Phase reversal technique applied to fishnet metalenses
Pacheco-Peña, Víctor ; Minin, Igor V.; Minin, Oleg V.; Beruete Díaz, Miguel (Hindawi, 2018)
Artículo / Artikulua
In this work, the fishnet metamaterial is applied to several converging metalenses by combining the zoning, reference phase, and phase reversal techniques. First, the zoning and reference phase techniques are implemented ... -
Phasorial differential pulse-width pair technique for long-range Brillouin optical time-domain analysis sensors
Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (Optical Society of America, 2014)
Artículo / Artikulua
We introduce a novel phasorial differential pulse width pair (PDPP) method for Brillouin optical time domain analysis (BOTDA) sensors that combines spatial resolution enhancement with increased tolerance to non local ... -
Photonic crystal fiber interferometer coated with a PAH/PAA nanolayer as humidity sensor
López Torres, Diego ; Elosúa Aguado, César ; Villatoro, Joel; Zubia, Joseba; Rothhardt, Manfred; Schuster, Kay; Arregui San Martín, Francisco Javier (Elsevier, 2017)
Artículo / Artikulua
In this paper, an optical fiber interferometric humidity sensor is presented. The device consists of 1 cmlong segment of photonic crystal fiber (PCF) spliced to standard single mode fibers (SMFs), forming an interferometer: ... -
Photonic crystal fiber temperature sensor based on quantum dot nanocoatings
Larrión Zabaleta, Beatriz; Hernáez Sáenz de Zaitigui, Miguel ; Arregui San Martín, Francisco Javier ; Goicoechea Fernández, Javier ; Bravo Larrea, Javier ; Matías Maestro, Ignacio (Hindawi / Wiley, 2009)
Artículo / Artikulua
Quantum dot nanocoatings have been deposited by means of the Layer-by-Layer technique on the inner holes of Photonic Crystal Fibers (PCFs) for the fabrication of temperature sensors. The optical properties of these sensors ... -
Photonic crystal fibers for sensing applications
Rodrigues Pinto, Ana Margarida; López-Amo Sáinz, Manuel (Hindawi Publishing Corporation, 2012)
Artículo / Artikulua
Photonic crystal fibers are a kind of fiber optics that present a diversity of new and improved features beyond what conventional optical fibers can offer. Due to their unique geometric structure, photonic crystal fibers ... -
Planar holographic metasurfaces for terahertz focusing
Kuznetsov, Sergei A.; Astafev, Mikhail A.; Beruete Díaz, Miguel ; Navarro Cía, Miguel (Springer Nature, 2015)
Artículo / Artikulua
Scientists and laymen alike have always been fascinated by the ability of lenses and mirrors to control light. Now, with the advent of metamaterials and their two-dimensional counterpart metasurfaces, such components can ... -
Planar magnetoinductive wave transducers: theory and applications
Freire, M. J.; Marqués, R.; Medina, Francisco; Gómez Laso, Miguel Ángel ; Martín, F. (AIP Publishing, 2004)
Artículo / Artikulua
Transduction of magnetoinductive waves (MIWs) in planar technology is demonstrated. A transducer consisting of a one-dimensional periodic array of metallic split squared ring resonators (SSRR), placed between a pair of ... -
Planoconcave lens by negative refraction of stacked subwavelength hole arrays
Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Sorolla Ayza, Mario ; Campillo, Igor (Optical Society of America, 2008)
Artículo / Artikulua
This work presents the design of a planoconcave parabolic negative index metamaterial lens operating at millimeter wavelengths fabricated by using stacked subwavelength hole arrays. A staircase approximation to the ideal ... -
Polarization diversity scheme for BOTDA sensors based on a double orthogonal pump interaction
Urricelqui Polvorinos, Javier ; López Fernandino, Felipe; Sagüés García, Mikel ; Loayssa Lara, Alayn (IEEE, 2015)
Artículo / Artikulua
We introduce a Brillouin optical time domain analysis (BOTDA) sensor deploying a novel polarization diversity technique based on the use of two orthogonal pump pulses which simultaneously interact with a phase modulated ... -
Polarization selection with stacked hole array metamaterial
Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Sorolla Ayza, Mario ; Campillo, Igor (AIP Publishing, 2008)
Artículo / Artikulua
Polarization rotation or selection appears in materials with optical activity, or those with Faraday effect, or in liquid crystals. In this letter we present a structure, with an analogous response, using stacked ... -
Polarization-tunable negative or positive refraction in self-complementariness-based extraordinary transmission prism
Navarro Cía, Miguel ; Beruete Díaz, Miguel ; Falcone Lanas, Francisco Javier ; Sorolla Ayza, Mario (EMW Publishing, 2010)
Artículo / Artikulua
Here we report a prism made of stacked quasi-selfcomplementary extraordinary transmission surfaces which allows simultaneously left- and right-handed propagation within the V-band for vertical and horizontal polarizations, ... -
Polarized left-handed extraordinary optical transmission of subterahertz waves
Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Sorolla Ayza, Mario ; Campillo, Igor (Optical Society of America, 2007)
Artículo / Artikulua
In this paper we design and measure a metamaterial polarizing device working in the sub-terahertz range. The polarizer is based on a modified version of our previous miniaturized Stacked Hole Array (SHA) structure, an ... -
Polarized optical feedback from an extremely short external cavity for controlling and stabilizing the polarization of vertical cavity surface emitting lasers
Arizaleta Arteaga, Mikel ; Parriaux, Olivier; López-Amo Sáinz, Manuel ; Thienpont, Hugo; Panajotov, Krassimir (AIP Publishing, 2007)
Artículo / Artikulua
The authors present experimental results showing that polarization selective optical feedback from an extremely short external cavity induces switching between the two fundamental transverse modes with orthogonal linear ... -
Polypropylene-substrate-based SRR- and CSRR-metasurfaces for submillimeter waves
Aznabet, Mariem; Navarro Cía, Miguel ; Kuznetsov, Sergei A.; Gelfand, A. V.; Fedorinina, N. I.; Goncharov, Yu. G.; Beruete Díaz, Miguel ; El Mrabet, O.; Sorolla Ayza, Mario (Optical Society of America, 2008)
Artículo / Artikulua
In this paper it is presented the fabrication of low loss millimeter wave metamaterials based on patterning on polypropylene substrates by conventional contact photolitography. We study numerically and experimentally ... -
Producing and exploiting simultaneously the forward and backward coupling in EBG-assisted microstrip coupled lines
Percaz Ciriza, Jon Mikel ; Chudzik, Magdalena ; Arnedo Gil, Israel ; Arregui Padilla, Iván ; Teberio Berdún, Fernando ; Gómez Laso, Miguel Ángel ; Lopetegui Beregaña, José María (IEEE, 2016)
Artículo / Artikulua
In this paper, a methodology is proposed for the design of EBG-assisted coupled line structures in microstrip technology, controlling independently the forward and backward coupling. It is based on the use of a ... -
Pyridine vapors detection by an optical fibre sensor
Elosúa Aguado, César ; Bariáin Aisa, Cándido ; Matías Maestro, Ignacio ; Rodríguez, Antonio; Colacio, Enrique; Salinas Castillo, Alfonso; Segura Carretero, Antonio; Fernández Gutiérrez, Alberto (MDPI, 2008)
Artículo / Artikulua
An optical fibre sensor has been implemented towards pyridine vapors detection; to achieve this, a novel vapochromic material has been used, which, in solid state, suffers a change in colour from blue to pink-white in ... -
Radio characterization for ISM 2.4 GHz wireless sensor networks for judo monitoring applications
López Iturri, Peio ; Aguirre Gallego, Erik ; Azpilicueta Fernández de las Heras, Leyre ; Astrain Escola, José Javier ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier (MDPI, 2014)
Artículo / Artikulua
In this work, the characterization of the radio channel for ISM 2.4GHz Wireless Sensor Networks (WSNs) for judo applications is presented. The environments where judo activity is held are usually complex indoor scenarios ... -
Random DFB fiber laser for remote (200 km) sensor monitoring using hybrid WDM/TDM
Leandro González, Daniel ; Miguel Soto, Verónica de ; Pérez Herrera, Rosa Ana ; Bravo Acha, Mikel ; López-Amo Sáinz, Manuel (IEEE, 2016)
Artículo / Artikulua
In this paper, a random distributed feedback fiber laser is proposed as a multiplexing scheme for ultralong range measurements (up to 200 km). Optical fiber sensors are time and wavelength multiplexed overcoming one of the ... -
A ray launching-neural network approach for radio wave propagation analysis in complex indoor environments
Azpilicueta Fernández de las Heras, Leyre ; Rawat, Meenakshi; Rawat, Karun; Ghannouchi, Fadhel; Falcone Lanas, Francisco (IEEE, 2014)
Artículo / Artikulua
A novel deterministic approach to model the radio wave propagation channels in complex indoor environments reducing computational complexity is proposed. This technique combines a neural network and a 3D ray launching ...
