• Optimized pattern design of a light guide using 2D ray-tracing simulation 

  Medrano Gurrea, Mario; Jiménez Martínez, Unai; Tainta Ausejo, Santiago  ; Erro Betrán, María José  ; Arnedo Gil, Israel; Beato López, Juan Jesús  ; Izura, J.; Zabala, S. (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  We propose the use of a simplified model for the analysis of the scattering elements used in edge-lit systems. By modelling their behaviour as lambertian light sources whose properties depend on the size and geometry of ...

• All fiber interferometer for ice detection 

  Arozarena Arana, Jesús Antonio; Socorro Leránoz, Abián Bentor  ; Del Villar, Ignacio  ; Díaz Lucas, Silvia  ; Matías Maestro, Ignacio   (Optica Publishing Group, 2018)   Contribución a congreso / Biltzarrerako ekarpena  

  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   (IEEE, 2017)   Contribución a congreso / Biltzarrerako ekarpena  

  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   (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  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.

• Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach 

  Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto  ; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo  ; Ursúa Rubio, Alfredo   (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  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  ; Soto Cabria, Adrián  ; Arza, Joseba; Sanchis Gúrpide, Pablo  ; Ursúa Rubio, Alfredo   (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  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 ...

• Verification system based on long-range iris and Graph Siamese Neural Networks 

  Zola, Francesco; Fernandez-Carrasco, José Álvaro; Bruse, Jan Lukas; Galar Idoate, Mikel  ; Geradts, Zeno (ACM, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  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  ; Mompó Roselló, Juan José ; Eyal, Avishay; Loayssa Lara, Alayn (Optica Publishing Group, 2020)   Contribución a congreso / Biltzarrerako ekarpena  

  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.

• Gender stereotyping impact in facial expression recognition 

  Domínguez Catena, Iris  ; Paternain Dallo, Daniel  ; Galar Idoate, Mikel   (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena

  Facial Expression Recognition (FER) uses images of faces to identify the emotional state of users, allowing for a closer interaction between humans and autonomous systems. Unfortunately, as the images naturally integrate ...

• Micro-displacement sensor based on hollow core fiber interferometers 

  Sánchez González, Arturo; Rodríguez Rodríguez, Armando; Dauliat, R.; Jamier, Raphael; Roy, Philippe; Pérez Herrera, Rosa Ana  ; López-Amo Sáinz, Manuel   (Optica, 2022)   Contribución a congreso / Biltzarrerako ekarpena

  An interferometric sensor based on hollow core fibers for the measurement of micro-displacement has been designed. Its characterization has resulted in a linear response, suggesting its application in pressure sensors.

• Micro-displacement sensor based on hollow core fiber interferometers 

  Dauliat, R.; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel  ; Pérez Herrera, Rosa Ana  ; Rodríguez Rodríguez, Armando; Sánchez González, Arturo (Optica, 2022)   Contribución a congreso / Biltzarrerako ekarpena

  An interferometric sensor based on hollow core fibers for the measurement of micro-displacement has been designed. Its characterization has resulted in a linear response, suggesting its application in pressure sensors.

• Comparison of experiment and simulation of ultrasonic mid-air haptic forces 

  Morales González, Rafael; Georgiou, Orestis; Marzo Pérez, Asier  ; Frier, William (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  Ultrasound mid-air haptics is an emerging technology with many applications in human-computer interactions. Despite great advances in related hardware and software, physics models that predict the resulting forces on a ...

• Stable L-band fiber laser sensor using a backscattering-based multimode fiber reflector 

  Pérez Herrera, Rosa Ana  ; Roldán Varona, Pablo; Sánchez-González, Arturo; Durán Lázaro, María  ; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel   (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  A new and highly stable L-band fiber laser for sensing is demonstrated. An emission line at 1575.47 nm, was achieved using a special reflector. Good strain sensitivity, optical signal to noise ratio and output power stability ...

• Filtro paso banda en tecnología groove gap waveguide con altura de pines reducida para facilitar su fabricación 

  Santiago Arriazu, David; Gómez Laso, Miguel Ángel  ; Lopetegui Beregaña, José María; Arregui Padilla, Iván   (Universidad de Málaga, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  In this work, a novel topology of groove gap waveguide (GGW) technology is presented to facilitate the fabrication process by Computer Numerical Control (CNC) milling. GGW has been proposed as an interesting alternative ...

• Micro sized interdigital capacitor for gases detection based on graphene oxide coating 

  Vitoria Pascual, Ignacio  ; Armas, Dayron; Coronel Camones, Carlos Manuel; Algarra González, Manuel; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio  ; Mukhopadhyay, Subhas C. (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena

  A micro sized interdigital capacitor sensible to CO2 and NO is studied in this work. The photolithography technique enables to obtain fingers with dimensions of 10 × 500 µm and separated 7 µm between them. The deposition ...

• Aluminum coated fiber optic sensor for enhancing flow rate measurement 

  Rodríguez Rodríguez, Armando; Urroz Unzueta, José Carlos  ; Diéguez Elizondo, Pedro  ; Bravo Acha, Mikel  ; López-Amo Sáinz, Manuel  ; López Rodríguez, José Javier   (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  A water flow and velocity aluminum-coated Fiber Bragg Grating sensor system for open channels was designed, simulated and tested. The sensing head was designed, ruggedized and customized to measure velocities at ...

• Multi-temporal data augmentation for high frequency satellite imagery: a case study in Sentinel-1 and Sentinel-2 building and road segmentation 

  Ayala Lauroba, Christian; Aranda Magallón, Coral ; Galar Idoate, Mikel   (ISPRS, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  Semantic segmentation of remote sensing images has many practical applications such as urban planning or disaster assessment. Deep learning-based approaches have shown their usefulness in automatically segmenting large ...

• Development of a water flow and velocity optical fiber sensor for field testing 

  Rodríguez Rodríguez, Armando; Urroz Unzueta, José Carlos  ; Diéguez Elizondo, Pedro  ; Bravo Acha, Mikel  ; López-Amo Sáinz, Manuel  ; López Rodríguez, José Javier   (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  A water flow and velocity fiber optic sensor system was developed and tested. The sensing head was especially developed and ruggedized to measure velocities at different depths, in order to calculate the discharge in channels.

• Noise in coherently radiating periodic structures beam forming networks 

  Biurrun Quel, Carlos  ; Río Bocio, Carlos del   (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  Following the noise wave theory, beam forming networks based on Coherently Radiating Periodic Structures (CORPS-BFN) are analysed and proven to be capable of enhancing the Signal to Noise Ratio of the system by analogically ...

• Evolutionary algorithms applied to multi-layered radiative cooling metamaterials 

  Lezaun Capdevila, Carlos; Jorajuría, Tania  ; Torres García, Alicia E.  ; Herrera, Pilar; Beruete Díaz, Miguel   (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  A newly design method for designing multi-layered radiative cooling metamaterials based on genetic algorithms (GAs) is exposed. The developed GA has been tested in three cases, resulting in three different structures that ...

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