Listar Artículos de revista DIEC - IEKS Aldizkari artikuluak por título
Mostrando ítems 439-458 de 467
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Trends in the design of wavelength-based optical fibre biosensors (2008–2018)
Socorro Leránoz, Abián Bentor
; Santano, Desiree ; Del Villar, Ignacio ; Matías Maestro, Ignacio (Elsevier, 2019)
Artículo / Artikulua 
During the last decades, both governments and companies have been committed to the continuous checking of biological parameters, which can prevent extra costs to administrations. A very efficient way to address this issue ... -
Tripod-loop metasurfaces for terahertz-sensing applications: a comparison
Jáuregui López, Irati ; Orazbayev, Bakhtiyar ; Pacheco-Peña, Víctor ; Beruete Díaz, Miguel (MDPI, 2020)
Artículo / Artikulua
The high electric field intensity achieved on the surface of sensors based on metasurfaces (metasensors) makes them an excellent alternative for sensing applications where the volume of the sample to be identified is tiny ... -
Tunable sensitivity in long period fiber gratings during mode transition with low refractive index intermediate layer
Del Villar, Ignacio ; Montoya-Cardona, Jorge; Imas González, José Javier ; Reyes-Vera, Erick; Ruiz Zamarreño, Carlos ; Matías Maestro, Ignacio ; Cruz, José Luis (IEEE, 2022)
Artículo / Artikulua
Double-clad fibers where the second cladding has a lower refractive index than the first cladding, prove to be ideal structures for potentiating and tuning the sensitivity in long-period fiber gratings (LPFGs) operating ... -
Tuning selection impact on kriging-aided in-building path loss modeling
Diago Mosquera, Melissa; Aragón Zavala, Alejandro; Rodríguez Corbo, Fidel Alejandro; Celaya Echarri, Mikel ; Shubair, Raed M.; Azpilicueta Fernández de las Heras, Leyre (IEEE, 2022)
Artículo / Artikulua
How do you know you select enough tuning dataset from measurements to guarantee model prediction accuracy? Tuning datasets are often selected based on simple random sampling with predefined rates. Usually, these rates ... -
Tutorial on the conservation of momentum in photonic time-varying media [Invited]
Ortega Gómez, Ángel; Lobet, Michaël; Vázquez Lozano, Juan Enrique; Liberal Olleta, Íñigo (Optica, 2023)
Artículo / Artikulua
Time-varying media break temporal symmetries while preserving spatial symmetries intact. Thus, it represents an excellent conceptual framework to investigate the fundamental implications of Noether’s theorem for the ... -
Twin lossy mode resonance on a single D-shaped optical fiber
Imas González, José Javier ; Ruiz Zamarreño, Carlos ; Del Villar, Ignacio ; Pérez Escudero, José Manuel ; Matías Maestro, Ignacio (Optica, 2021)
Artículo / Artikulua
This letter presents the fabrication of dual lossy mode resonance (LMR) refractometers based on titanium dioxide (TiO2) and tin oxide (SnO2) thin films deposited on a single side-polished D-shaped optical fiber. For the ... -
Two-wavelength phase-sensitive OTDR sensor using perfect periodic correlation codes for measurement range enhancement, noise reduction and fading compensation
Sagüés García, Mikel ; Piñeiro Ben, Enrique; Cerri, Enis; Minardo, Aldo; Eyal, Avishay; Loayssa Lara, Alayn (Optica, 2021)
Artículo / Artikulua
We demonstrate a two-wavelength differential-phase-measuring OTDR sensor that uses perfect periodic correlation phase codes to enhance the measurement performance. The two-wavelength technique extends the measurement range ... -
UAVradio: Radio link path loss estimation for UAVs
Aláez Gómez, Daniel; Celaya Echarri, Mikel; Azpilicueta Fernández de las Heras, Leyre ; Villadangos Alonso, Jesús (Elsevier, 2024)
Artículo / Artikulua
The UAVRadio Python module is a comprehensive toolkit designed to facilitate the analysis and prediction of radio signal path loss in Unmanned Aerial Vehicle (UAV) communication scenarios. The module encompasses a range ... -
Ultra-low frequency multidirectional harvester for wind turbines
Castellano Aldave, Jesús Carlos; Carlosena García, Alfonso ; Iriarte Goñi, Xabier ; Plaza Puértolas, Aitor (Elsevier, 2023)
Artículo / Artikulua
In this paper we propose, and demonstrate through a prototype, a completely novel device able to harvest mechanical energy from the multidirectional vibrations in a wind turbine, and convert it into electrical, to power ... -
Ultrahigh refractive index sensitivity with lossy mode resonance in a side-polished low-index polymer optical fiber
López Vargas, Juan David; Matías Maestro, Ignacio ; Werneck, Marcelo M.; Allil, Regina C.; Del Villar, Ignacio (IEEE, 2024)
Artículo / Artikulua
This work presents a theoretical–experimental study of a refractive index (RI) sensor based on lossy mode resonances (LMRs) generated with a side-polished low-index polymer optical fiber. The theoretical part involves ... -
Ultrathin and high-efficiency Pancharatnam-Berry phase metalens for millimeter waves
Moreno-Peñarrubia, Alexia; Teniente Vallinas, Jorge ; Kuznetsov, Sergei A.; Orazbayev, Bakhtiyar ; Beruete Díaz, Miguel (AIP Publishing, 2021)
Artículo / Artikulua
Applying the Pancharatnam–Berry (PB) principle to half-wave plate (HWP) metasurfaces allows the manipulation of wavefronts along with the conversion of the handedness of circularly polarized incident waves by simply rotating ... -
Ultrathin sub-terahertz half-wave plate with high conversion efficiency based on zigzag metasurface
Moreno-Peñarrubia, Alexia; Kuznetsov, Sergei A.; Beruete Díaz, Miguel (IEEE, 2020)
Artículo / Artikulua
In this communication, an ultrathin transmissive half-wave plate (HWP) based on a bi-layered zigzag metasurface operating at the lower frequency edge of the terahertz (THz) spectrum is numerically and experimentally studied. ... -
UV light detection with side polished CYTOP fiber
Ayechu Abendaño, Ada; Santano, Desiree ; López Vargas, Juan David; Matías Maestro, Ignacio ; Del Villar, Ignacio (IEEE, 2023)
Artículo / Artikulua
Cyclic transparent optical polymer (CYTOP) fiber, used mainly in strain detection and refractive index characterization of liquids, can be polished for the detection of ultraviolet (UV) light radiation. The study investigates ... -
Validation of 3D simulation tool for radio channel modeling at 60 GHz: a meeting point for empirical and simulation-based models
Celaya Echarri, Mikel ; Azpilicueta Fernández de las Heras, Leyre ; López Iturri, Peio ; Falcone Lanas, Francisco Javier ; García Sánchez, Manuel; Vázquez Alejos, Ana (Elsevier, 2020)
Artículo / Artikulua
The radio channel modelling of the millimeter wave bands for the fifth generation of wireless mobile communications, appears as a challenge for both empirical and simulation approaches. In this paper we discuss the use of ... -
Validation of HTTP response time from network traffic as an alternative to web browser instrumentation
López Romera, Carlos; Morató Osés, Daniel ; Magaña Lizarrondo, Eduardo ; Izal Azcárate, Mikel (IEEE, 2021)
Artículo / Artikulua
The measurement of response time in hypertext transfer protocol (HTTP) requests is the most basic proxy measurement method for evaluating web browsing quality. It is used in the research literature and in application ... -
Validation of the filling factor index to study the filling process of the sEMG signal in the quadriceps
Rodríguez Falces, Javier ; Malanda Trigueros, Armando; Mariscal Aguilar, Cristina; Niazi, Imran Khan; Navallas Irujo, Javier (Elsevier, 2023)
Artículo / Artikulua
Introduction: The EMG filling factor is an index to quantify the degree to which an EMG signal has been filled. Here, we tested the validity of such index to analyse the EMG filling process as contraction force was ... -
Valorization of insulation cellulose waste as solid biomass fuel
Espuelas Zuazu, Sandra ; Marcelino Sádaba, Sara ; Castillo, Jesús María del ; García, Beñat; Seco Meneses, Andrés (MDPI, 2021)
Artículo / Artikulua
This paper investigates the ability of insulation cellulose fiber powder (CFP) to be pelletized for its valorization as biomass fuel. CFP is a waste originating from insulation cellulose manufacturing that lacks any method ... -
Vertically coupled InP/InGaAsP microring lasers using a single epitaxial growth and singleside lithography
García López, Óscar; Thourhout, Dries Van; Verstuyft, Steven; López-Amo Sáinz, Manuel ; Baets, Roel; Galarza Galarza, Marko (IEEE, 2020)
Artículo / Artikulua
The experimental demonstration of vertical microring lasers requiring only one single epitaxial growth and two single-side lithographic steps is presented, in what is the simplest fabrication scheme for such devices published ... -
Very-low frequency capacitively coupled AC amplifier with a current feedback operational amplifier
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; Carlosena García, Alfonso ; Martincorena Arraiza, Maite (Wiley, 2023)
Artículo / Artikulua
In this paper, we propose the idea of using transimpedance amplifiers, in lieu of operational amplifiers (OAs) or transconductance amplifiers (OTAs) to design capacitively coupled AC amplifiers. The idea is demonstrated ... -
Virtual antenna array for reduced energy per bit transmission at Sub-5 GHz mobile wireless communication systems
Alibakhshikenari, Mohammad; Virdee, Bal S.; Mariyanayagam, Dion; García Zuazola, Ignacio Julio; Benetatos, Harry; Althuwayb, Ayman Abdulhadi; Alali, Bader; Xu, Kai-Da; Falcone Lanas, Francisco Javier (Elsevier, 2023)
Artículo / Artikulua
This paper presents an innovative technique to synthesize a virtual antenna array (VAA) that consumes less energy than conventional antenna arrays that are used in mobile communications systems. We have shown that for a ...
