Recent Submissions

  • All fiber interferometer for ice detection 

    Arozarena Arana, Jesús Antonio; Socorro Leránoz, Abián Bentor; Del Villar, Ignacio; Díaz Lucas, Silvia; Matías Maestro, Ignacio Upna Orcid (Optica Publishing Group, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work presents an etched single-mode - multimode - single-mode structure that detects the solid-to-liquid change of state of the water due to an increased refractive index sensitivity within the 1.308 - 1.321 RIU range
  • Fiber-optic immunosensor based on lossy mode resonances induced by indium tin oxide thin-films 

    Socorro Leránoz, Abián Bentor; Del Villar, Ignacio; Corres Sanz, Jesús María; Arregui San Martín, Francisco Javier; Matías Maestro, Ignacio Upna Orcid (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A novel immunosensor based on lossy mode resonances (LMRs) induced in optical fibers is developed in this contribution. Indium tin oxide (ITO) is sputtered on the optical substrate to generate an LMR in the transmission ...
  • Mode transition during deposition of nanoscale ITO coatings on tilted fiber Bragg gratings 

    Imas González, José Javier; Albert, Jacques; Del Villar, Ignacio; Ozcariz Celaya, Aritz; Ruiz Zamarreño, Carlos; Matías Maestro, Ignacio Upna Orcid (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The mode transition phenomenon is experimentally demonstrated in tilted fiber Bragg gratings (TFBG) through the deposition of an indium tin oxide (ITO) thin film employing a DC sputtering machine.
  • Ammonia gas optical sensor based on lossy mode resonances 

    Armas, Dayron; Zubiate Orzanco, Pablo Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 ...
  • Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach 

    Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto Upna Orcid; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Lithium-ion batteries are energy storage systems used in an increasing number of applications. Due to their flammable materials, their use entails risks of fire and explosion. The study of the abuse operation of these ...
  • Temperature indicators and overtemperature detection in lithium-ion batteries based on electrochemical impedance spectroscopy 

    Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Soto Cabria, Adrián Upna Orcid; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Lithium-ion batteries are the leading technology for energy storage systems due to their attractive advantages. However, the safety of lithium-ion batteries is a major concern, as their operating conditions are limited in ...
  • Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology 

    Beato López, Juan Jesús Upna Orcid; La Roca, Paulo Matías Upna; Algueta-Miguel, Jose M. Upna Orcid; Garayo Urabayen, Eneko Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Gómez Polo, Cristina Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (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 Upna Orcid; Asmus, Tiago Upna Orcid; Pereira Dimuro, Graçaliz Upna Orcid; Herrera, Francisco; Takáč, Zdenko; Bustince Sola, Humberto Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Azpilicueta Fernández de las Heras, Leyre Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Fuentes Lorenzo, Omar Upna; Torres Betancourt, Angie Tatiana; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Del Villar, Ignacio Upna Orcid; Ozcariz Celaya, Aritz Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Albert, Jacques (Chinese Academy of Sciences, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; López Vargas, Juan David; Matías Maestro, Ignacio Upna Orcid; Del Villar, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Del Villar, Ignacio Upna Orcid; Mozo, Juan D.; Simerova, Radka; Sezemsky, Petr; Stranak, Vitezslav; Śmietana, Mateusz; Matías Maestro, Ignacio Upna Orcid (Elsevier, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2023)   Artículo / Artikulua  OpenAccess
    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 Upna Orcid; Burnat, Dariusz; Śmietana, Mateusz; Del Villar, Ignacio Upna Orcid (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 Upna Orcid; Vargas Requena, Dávid Tomás; García-Garza, Luis Antonio (MDPI, 2023)   Artículo / Artikulua  OpenAccess
    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. ...
  • Perspective chapter: thermal runaway in lithium-ion batteries 

    Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Valera, Juan José; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IntechOpen, 2022)   Capítulo de libro / Liburuen kapitulua  OpenAccess
    Lithium-ion batteries (LIBs) are becoming well established as a key component in the integration of renewable energies and in the development of electric vehicles. Nevertheless, they have a narrow safe operating area with ...
  • Verification system based on long-range iris and Graph Siamese Neural Networks 

    Zola, Francesco; Fernandez-Carrasco, José Álvaro; Bruse, Jan Lukas; Galar Idoate, Mikel Upna Orcid; Geradts, Zeno (ACM, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Biometric systems represent valid solutions in tasks like user authentication and verification, since they are able to analyze physical and behavioural features with high precision. However, especially when physical ...
  • Distributed strain sensing with large dynamic range based on two-wavelength phase-sensitive OTDR 

    Piñeiro Ben, Enrique; Sagüés García, Mikel Upna Orcid; Mompó Roselló, Juan José Upna; Eyal, Avishay; Loayssa Lara, Alayn (Optica Publishing Group, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    We demonstrate the use of two-wavelengths to enhance the dynamic range in phase-sensitive OTDR vibration sensors. The system overcomes the phase wrapping con- strains by the synthesis of an equivalent wavelength measurement.

View more


El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
Logo MinisterioLogo Fecyt