• Multiplexing optical fiber Fabry-Perot interferometers based on air-microcavities 

  Pérez Herrera, Rosa Ana ; Novais, S.; Bravo Acha, Mikel ; Leandro González, Daniel ; Silva, Susana; Frazão, Orlando; López-Amo Sáinz, Manuel  (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  

  In this work we demonstrate the multiplexing capability of new optical fiber Fabry-Perot interferometers based on airmicrocavities using a commercial FBG interrogator. Three optimized air-microcavity interferometer sensors ...

• Micro-drilled optical fiber for enhanced laser strain sensors 

  Pérez Herrera, Rosa Ana ; Bravo Acha, Mikel ; Roldán Varona, Pablo; Leandro González, Daniel ; Rodríguez Cobo, L.; López Higuera, José Miguel; López-Amo Sáinz, Manuel  (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  

  In this work, we present an experimental measurement of temperature and strain sensitivities of a micro-drilled optical fiber (MDOF). The MDOF consisted of a quasi-randomly distributed reflector along a single mode fiber ...

• General synthesis of tapered matching sections for single mode operation using the coupled-mode theory 

  Percaz Ciriza, Jon Mikel ; Arnedo Gil, Israel ; Arregui Padilla, Iván ; Teberio Berdún, Fernando ; Martín Iglesias, Petronilo; Gómez Laso, Miguel Ángel ; Lopetegui Beregaña, José María  (IEEE, 2019)   Artículo / Artikulua

  In this paper, a novel and general method to synthetize microwave waveguide tapers intended for single mode operation is proposed. The technique is based on the use of an exact series solution of the inverse scattering ...

• Supercapacitors: electrical characteristics, modelling, applications and future trends 

  Berrueta Irigoyen, Alberto; Ursúa Rubio, Alfredo ; San Martín Biurrun, Idoia ; Eftekhari, Ali; Sanchís Gúrpide, Pablo  (IEEE, 2019)   Artículo / Artikulua  

  Energy storage systems are playing an increasingly important role in a variety of applications, such as electric vehicles or grid-connected systems. In this context, supercapacitors (SCs) are gaining ground due to their ...

• Gamma radiation measurements using an optical fiber laser 

  Pérez Herrera, Rosa Ana ; Stancalie, Andrei; Cabezudo Sánchez-Valverde, Pablo Miguel; Sporea, Dan; Negut, Daniel; López-Amo Sáinz, Manuel  (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena

  A fiber ring laser cavity configuration was used to analyze the effect of gamma-irradiation over the performance of different types of erbium doped fibers. Preliminary results validates this method to monitor gamma-radiation ...

• Ultra-long (275 km) random distributed feedback fiber laser for remote sensor monitoring 

  Miguel Soto, Verónica de; Leandro González, Daniel ; López-Amo Sáinz, Manuel  (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena

  An interferometric sensor located 275 km away from the monitoring station has been interrogated by a double-pumped random distributed feedback fiber laser, reaching the longest distance in fiber optic remote sensing reported ...

• High sensitivity fiber-optic liquid level sensor using biconical tapered fibers 

  Júdez Colorado, Aitor; Leandro González, Daniel ; Pérez Herrera, Rosa Ana ; Galarza Galarza, Marko; López-Amo Sáinz, Manuel  (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena  

  A liquid level sensor is presented using a biconical tapered standard single-mode fiber, being its main characteristic an outstanding sensitivity for a low cost transducer. Temperature compensation is enabled with the same ...

• Microstructured optical fiber sensor for soil moisture measurements 

  López Aldaba, Aitor ; López Torres, Diego ; Campo-Bescós, Miguel ; López Rodríguez, José Javier; Yerro Lizarazu, David; Elosúa Aguado, César ; Arregui San Martín, Francisco Javier ; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel  (Optical Society of America, 2018)   Contribución a congreso / Biltzarrerako ekarpena

  A discrete sensor based on a Sn0₂-FP (Fabry-Pérot) cavity is presented and characterized in real soil conditions. Results are compared, for the first time to our knowledge, with a commercial capacitive sensor and gravimetric ...

• Watt-level green random laser at 532  nm by SHG of Yb-doped fiber laser 

  Rota Rodrigo, Sergio ; Gouhier, B.; Dixneuf, C.; Antoni Micollier, L.; Guiraud, G.; Leandro González, Daniel ; López-Amo Sáinz, Manuel ; Traynor, N.; Santarelli, G. (Optical Society of America, 2018)   Artículo / Artikulua  

  We have developed a Watt-level random laser at 532 nm. The laser is based on a 1064 nm random distributed ytterbium-gain assisted fiber laser seed with a 0.35 nm line-width and 900 mW polarized output power. A study for ...

• Real time measuring system of multiple chemical parameters using microstructured optical fibers based sensors 

  López Aldaba, Aitor ; López Torres, Diego ; Elosúa Aguado, César ; Arregui San Martín, Francisco Javier ; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe; López-Amo Sáinz, Manuel  (IEEE, 2018)   Artículo / Artikulua  

  In this paper, a multiplexing system for simultaneous interrogation of optical fiber sensors which measure different parameters is presented and validated. The whole system has been tested with 6 different sensing heads ...

• Far-field and near-field physics of extraordinary THz transmitting hole-array antennas 

  Camacho, Miguel; Boix, Rafael R.; Kuznetsov, Sergei A.; Beruete Díaz, Miguel ; Navarro Cía, Miguel (IEEE, 2019)   Artículo / Artikulua  

  Despite three decades of effort, predicting accurately extraordinary transmission through subwavelength hole arrays has proven challenging. The lack of quantitative design and modeling capability to take into account ...

• A water content continuous monitoring of grapevine xylem tissue using a portable low-power cost-effective FMCW radar 

  Quemada, Carlos; García González, Cebrián; Iriarte Galarregui, Juan Carlos ; Marín Ederra, Diana; Gastón Beraza, Diego; Miranda Jiménez, Carlos ; Gonzalo García, Ramón ; Maestrojuán Biurrun, Itziar ; Santesteban García, Gonzaga ; Ederra Urzainqui, Íñigo  (IEEE, 2019)   Artículo / Artikulua

  This paper presents the real-time monitoring of a grapevine’s water content that flows up through the xylem tissue by means of a frequency-modulated continuous-wave (FMCW) radar. The application of an optimization process, ...

• Strong angular dependence of resonant states in 2D dielectric cylinder rings 

  Andueza Unanua, Ángel María; Pérez Conde, Jesús ; Sevilla Moróder, Joaquín  (AIP Publishing, 2018)   Artículo / Artikulua

  We investigate collective resonators made of dielectric cylinders assembled as two-dimensional regular octagons and decagons. These structures exhibit collective resonance states that change their intensity with the incident ...

• Study on isolation improvement between closely-packed patch antenna arrays based on fractal metamaterial electromagnetic bandgap structures 

  Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Ali, Abdul; Hussein Ali, Ammar; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Institution of Engineering and Technology, 2018)   Artículo / Artikulua  

  A decoupling metamaterial (MTM) configuration based on fractal electromagnetic-bandgap (EMBG) structure is shown to significantly enhance isolation between transmitting and receiving antenna elements in a closely-packed ...

• KISS methodologies for network management and anomaly detection 

  Vega, Carlos; Aracil Rico, Javier ; Magaña Lizarrondo, Eduardo  (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena

  Current networks are increasingly growing in size, complexity and the amount of monitoring data that they produce, which requires complex data analysis pipelines to handle data collection, centralization and analysis tasks. ...

• Diseño y desarrollo de estructuras ópticas para la fabricación de sensores de fibra óptica 

  Ascorbe Muruzabal, Joaquín  (2018)   Tesis doctoral / Doktoretza tesia  

  Actualmente existe una gran variedad de opciones para el sensado mediante métodos ópticos y, más concretamente, para el desarrollo de sensores utilizando fibra óptica. Aunque la mayoría de los principios físicos utilizados ...

• Exact inter-discharge interval distribution of motor unit firing patterns with gamma model 

  Navallas Irujo, Javier ; Porta Cuéllar, Sonia; Malanda Trigueros, Armando  (Springer, 2019)   Artículo / Artikulua  

  Inter-discharge interval distribution modeling of the motor unit firing pattern plays an important role in electromyographic decomposition and the statistical analysis of firing patterns. When modeling firing patterns ...

• Power-efficient CMOS circuits for energy harvesting supplied IoT systems 

  Garde Luque, María Pilar (2019)   Tesis doctoral / Doktoretza tesia  

  En esta tesis se han aplicado técnicas de baja tensión y bajo consumo para implementar nuevos circuitos analógicos (principalmente amplificadores). Estos circuitos están orientados a dispositivos energéticamente autónomos ...

• Contribution to the development of Rayleigh-based fiber optic systems for sensing applications 

  Miguel Soto, Verónica de (2019)   Tesis doctoral / Doktoretza tesia  

  La tecnología de los sensores de fibra óptica ha experimentado un gran crecimiento desde sus comienzos en la década de 1970, cuando se contempló su utilización para detectar parámetros tanto físicos como químicos. Además, ...

• Virtual FBGs using saturable absorbers for sensing with fiber lasers 

  Rodríguez Cobo, L.; Pérez Herrera, Rosa Ana ; Quintela, M. A.; Ruiz Lombera, Rubén; López-Amo Sáinz, Manuel ; López Higuera, José Miguel (MDPI, 2018)   Artículo / Artikulua  

  The spectral narrowing of Fiber Bragg Gratings (FBGs) introduced by unpumped Er-doped fiber (EDF) was analyzed for fiber lasers (FL). Owing to spatial hole burning (SHB), the spectral response of a virtual FBG can be ...

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