• Quantum antireflection temporal coatings: quantum state frequency shifting and inhibited thermal noise amplification 

  Liberal Olleta, Íñigo  ; Vázquez Lozano, Juan Enrique; Pacheco-Peña, Víctor   (wiley, 2023)   Artículo / Artikulua  

  The quantum optical response of antireflection temporal coatings (ATCs), that is, matching temporal layers that suppress the generation of backward waves in temporal boundaries, is investigated. The results reveal that ...

• Micropower class AB low-pass analog filter based on the super-source follower 

  Martincorena Arraiza, Maite  ; Cruz Blas, Carlos Aristóteles de la  ; López Martín, Antonio  ; Carlosena García, Alfonso   (IEEE, 2022)   Artículo / Artikulua  

  An improved class AB version of the super source follower is used to implement a compact and power-efficient second order analog low-pass filter. The proposed circuit achieves a 41% power reduction as well as an improvement ...

• Ammonia gas optical sensor based on lossy mode resonances 

  Armas, Dayron; Zubiate Orzanco, Pablo  ; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  This letter presents the fabrication and characterization of an ammonia (NH 3) gas optical sensor based on lossy mode resonances (LMRs). A chromium (III) oxide (Cr 2 O 3) thin film deposited onto a planar waveguide was ...

• Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology 

  Beato López, Juan Jesús  ; La Roca, Paulo Matías ; Algueta-Miguel, Jose M.  ; Garayo Urabayen, Eneko  ; Sánchez-Alarcos Gómez, Vicente  ; Recarte Callado, Vicente  ; Gómez Polo, Cristina  ; Pérez de Landazábal Berganzo, José Ignacio   (IOP Publishing, 2023)   Artículo / Artikulua

  Different applications based on metamagnetic shape memory alloy (MSMA) require monitoring the evolution of the martensitic transformation (MT) to optimize the actuation mechanism. To avoid interaction with the active ...

• Generalizing max pooling via (a, b)-grouping functions for convolutional neural networks 

  Rodríguez Martínez, Iosu  ; Asmus, Tiago  ; Pereira Dimuro, Graçaliz  ; Herrera, Francisco; Takáč, Zdenko; Bustince Sola, Humberto   (Elsevier, 2023)   Artículo / Artikulua  

  Due to their high adaptability to varied settings and effective optimization algorithm, Convolutional Neural Networks (CNNs) have set the state-of-the-art on image processing jobs for the previous decade. CNNs work in a ...

• An enhanced approach to virtually increase quasi-stationarity regions within geometric channel models for vehicular communications 

  Rodríguez Corbo, Fidel Alejandro; Celaya Echarri, Mikel; Shubair, Raed M.; Falcone Lanas, Francisco  ; Azpilicueta Fernández de las Heras, Leyre   (IEEE, 2023)   Artículo / Artikulua  

  Vehicular communication channels are intrinsically non-stationary, as they present high mobility and abundant dynamic scatterers. Quasi-stationary regions can assess the degree of non-stationarity within a determined ...

• Highly sensitive sensor for measuring material thermal expansion using a ring laser 

  Díaz Lucas, Silvia  ; Fuentes Lorenzo, Omar ; Torres Betancourt, Angie Tatiana; Corres Sanz, Jesús María  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  A new thermal expansion sensor is presented in this letter. It combines an interferometric fiber sensor and an erbium-doped fiber ring laser as the light source. The sensor consists of a combination of single-mode, ...

• Planar-waveguide-lmr-based sensors: engineering the depth of characteristic curves 

  Shrivastav, Anand M.; Del Villar, Ignacio  ; Ascorbe Muruzabal, Joaquín  ; Corres Sanz, Jesús María  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  Lossy mode resonance (LMR)-based sensors have been proven as one of the exponentially growing research fields since the last decade. These sensors have demonstrated their capabilities in the detection of several physical, ...

• All-fiber ellipsometer for nanoscale dielectric coatings 

  Imas González, José Javier  ; Matías Maestro, Ignacio  ; Del Villar, Ignacio  ; Ozcariz Celaya, Aritz  ; Ruiz Zamarreño, Carlos  ; Albert, Jacques (Chinese Academy of Sciences, 2023)   Artículo / Artikulua  

  Multiple mode resonance shifts in tilted fiber Bragg gratings (TFBGs) are used to simultaneously measure the thickness and the refractive index of TiO2 thin films formed by Atomic Layer Deposition (ALD) on optical fibers. ...

• 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 ...

• Electrochemical lossy mode resonance for the detection of manganese ions 

  Domínguez Rodríguez, Ismel  ; Corres Sanz, Jesús María  ; Del Villar, Ignacio  ; Mozo, Juan D.; Simerova, Radka; Sezemsky, Petr; Stranak, Vitezslav; Śmietana, Mateusz; Matías Maestro, Ignacio   (Elsevier, 2023)   Artículo / Artikulua  

  In this work we propose electrochemical lossy mode resonance (eLMR) as a powerful method for the detection of manganese (Mn) ions. The sensor is based on a simple planar waveguide (sodasingle bondlime glass coverslip) ...

• LMR-based optical sensor for ethylene detection at visible and mid-infrared regions 

  Gallego Martínez, Elieser Ernesto; Hualde Otamendi, Mikel; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  Ethylene monitoring has long been a method of controlling the ripening of climacteric fruits, but it turns out that this gas is an important biomarker in biomedical applications. This work presents an optical gas sensor ...

• Enhancement of lossy mode resonance sensing properties by the introduction of an intermediate low-refractive-index layer 

  Armas, Dayron; Kwietniewski, Norbert; Matías Maestro, Ignacio  ; Burnat, Dariusz; Śmietana, Mateusz; Del Villar, Ignacio   (Optica, 2023)   Artículo / Artikulua

  Devices based on the lossy mode resonance (LMR) effect have found numerous sensing applications. Herein, the enhancement of the sensing properties by the introduction of an intermediate layer between the substrate and the ...

• Low-cost online monitoring system for the etching process in fiber optic sensors by computer vision 

  Rodríguez Rodríguez, Wenceslao Eduardo; Puente-Sujo, Jesús Abraham; Rodríguez Rodríguez, Adolfo Josué; Matías Maestro, Ignacio  ; Vargas Requena, Dávid Tomás; García-Garza, Luis Antonio (MDPI, 2023)   Artículo / Artikulua  

  The present research exposes a novel methodology to manufacture fiber optic sensors following the etching process by Hydrofluoric Acid deposition through a real-time monitoring diameter measurement by computer vision. ...

• Selective harmonic mitigation: limitations of classical control strategies and benefits of model predictive control 

  Rosado Galparsoro, Leyre  ; Samanes Pascual, Javier  ; Gubía Villabona, Eugenio  ; López Taberna, Jesús   (IEEE, 2023)   Artículo / Artikulua  

  Selective harmonic mitigation pulsewidth modulation (SHMPWM) combined with model predictive control (MPC) is a promising approach for grid-connected power converters. SHMPWM can guarantee grid code compliance in steady ...

• Zero-loss switching in LLC resonant converters under discontinuous conduction mode: analysis and design methodology 

  Elizondo Martínez, David  ; Barrios Rípodas, Ernesto  ; Larequi, Íñigo; Ursúa Rubio, Alfredo  ; Sanchis Gúrpide, Pablo   (IEEE, 2023)   Artículo / Artikulua  

  Many thriving applications where isolation is required, such as LED drivers, traction and EV fast charging, implement LLC resonant converters, particularly when voltage regulation is not required or an additional ...

• Improving the width of lossy mode resonances (LMRs) in double-clad fibers 

  Imas González, José Javier  ; Del Villar, Ignacio  ; Zubiate Orzanco, Pablo  ; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  In this work, the characteristics of lossy mode resonances (LMRs) in double-clad fibers where the refractive index (RI) of the second cladding is lower than that of the first cladding are analyzed both numerically and ...

• MmWave channel stationarity analysis of V2X communications in an urban environment 

  Rodríguez Corbo, Fidel Alejandro; Azpilicueta Fernández de las Heras, Leyre  ; Celaya Echarri, Mikel; Shubair, Raed M.; Falcone Lanas, Francisco   (IEEE, 2023)   Artículo / Artikulua  

  Vehicular communication channels are subject to high nonstationarity mainly characterized by the scatterers’ and/or transceivers’ high mobility. In this sense, this letter presents a characterization of the channel ...

• Novel design method for millimeter-wave gap waveguide low-pass filters using advanced manufacturing techniques 

  Santiago Arriazu, David; Gómez Laso, Miguel Ángel  ; Lopetegui Beregaña, José María; Arregui Padilla, Iván   (IEEE, 2023)   Artículo / Artikulua  

  In this paper, a groove gap waveguide (GGW) low-pass filter is proposed for the first time. Gap waveguide technology represents an interesting alternative as a low-loss, cost-effective, high- performance transmission line ...

• Acuity-based rotational patient-to-physician assignment in an emergency department using electronic health records in triage 

  Cildoz Esquíroz, Marta  ; Ibarra Bolt, Amaya; Mallor Giménez, Fermín   (SAGE, 2023)   Artículo / Artikulua  

  Emergency department (ED) operational metrics generated by a new acuity-based rotational patient-to-physician assignment (ARPA) algorithm are compared with those obtained with a simple rotational patient assignment (SRPA) ...

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