Listar Artículos de revista DIEE - IEES Aldizkari artikuluak por título

Mostrando ítems 351-370 de 391

    • Tailoring light polarization in vertical cavity surface emitting lasers by isotropic optical feedback from an extremely short external cavity 

      Arizaleta Arteaga, Mikel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; Thienpont, Hugo; Panajotov, Krassimir (AIP Publishing, 2006)   Artículo / Artikulua  OpenAccess
      The authors experimentally show that isotropic optical feedback from an extremely short external cavity can induce switching between the two fundamental transverse modes with orthogonal linear polarization of otherwise ...

    • Tapered single-mode optical fiber pH sensor based on lossy mode resonances generated by a polymeric thin-film 

      Socorro Leránoz, Abián Bentor Upna Orcid; Del Villar, Ignacio Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2012)   Artículo / Artikulua  OpenAccess
      Lossy mode resonances can be generated with certain polymeric nanostructures, such as those obtained with a multilayered assembly of poly(allylamine hydrochloride) and poly (acrylic acid). This coating is adsorbed by the ...

    • Temperature sensor based on a hybrid ITOsilica resonant cavity 

      Socorro Leránoz, Abián Bentor Upna Orcid; Soltani, Soheil; Del Villar, Ignacio Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Armani, Andrea M. (Optical Society of America, 2015)   Artículo / Artikulua  OpenAccess
      Integrated optical devices comprised of multiple material systems are able to achieve unique performance characteristics, enabling applications in sensing and in telecommunications. Due to ease of fabrication, the majority ...

    • Temperature sensor using a multiwavelength erbium-doped fiber ring laser 

      Díaz Lucas, Silvia Upna Orcid; San Fabián García, Noé Upna; Socorro Leránoz, Abián Bentor Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Hindawi, 2017)   Artículo / Artikulua  OpenAccess
      A novel temperature sensor is presented based on a multiwavelength erbium-doped fiber ring laser.The laser is comprised of fiber Bragg grating reflectors as the oscillation wavelength selecting filters.The performance of ...

    • Terahertz carpet cloak based on a ring resonator metasurface 

      Orazbayev, Bakhtiyar Upna Orcid; Mohammadi Estakhri, Nasim; Beruete Díaz, Miguel Upna Orcid; Alù, Andrea (American Physical Society, 2015)   Artículo / Artikulua  OpenAccess
      In this work we present the concept and design of an ultrathin (λ/22) terahertz (THz) unidirectional carpet cloak based on the local phase compensation approach enabled by gradient metasurfaces. A triangular surface bump ...

    • Terahertz epsilon-near-zero graded-index lens 

      Torres Landívar, Víctor Upna; Pacheco-Peña, Víctor Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Navarro Cía, Miguel Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Sorolla Ayza, Mario Upna; Engheta, Nader (Optical Society of America, 2013)   Artículo / Artikulua  OpenAccess
      An epsilon-near-zero graded-index converging lens with planar faces is proposed and analyzed. Each perfectly-electric conducting (PEC) waveguide comprising the lens operates slightly above its cut-off frequency and has ...

    • Terahertz time domain spectroscopy allows contactless monitoring of grapevine water status 

      Santesteban García, Gonzaga Upna Orcid; Palacios Horcajada, Inés Upna; Miranda Jiménez, Carlos Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid; Royo Díaz, José Bernardo Upna Orcid; Gonzalo García, Ramón Upna Orcid (Frontiers Media, 2015)   Artículo / Artikulua  OpenAccess
      Agriculture is the sector with the greatest water consumption, since food production is frequently based on crop irrigation. Proper irrigation management requires reliable information on plant water status, but all the ...

    • Terahertz wave transmission in flexible polystyrene-lined hollow metallic waveguides for the 2.5-5 THz band 

      Navarro Cía, Miguel Upna Orcid; Vitiello, Miriam S.; Bledt, Carlos M.; Melzer, Jeffrey E.; Harrington, James A.; Mitrofanov, Oleg (Optical Society of America, 2013)   Artículo / Artikulua  OpenAccess
      A low-loss and low-dispersive optical-fiber-like hybrid HE11 mode is developed within a wide band in metallic hollow waveguides if their inner walls are coated with a thin dielectric layer. We investigate terahertz (THz) ...

    • Terajets produced by dielectric cuboids 

      Pacheco-Peña, Víctor Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Minin, Igor V.; Minin, Oleg V. (AIP Publishing, 2014)   Artículo / Artikulua  OpenAccess
      The capability of generating terajets using three-dimensional (3D) dielectric cuboids working at terahertz (THZ) frequencies (as analogues of nanojets in the infrared band) is introduced and studied numerically. The focusing ...

    • Theoretical modeling and experimental verification of the scattering from a ferromagnetic microwire 

      Liberal Olleta, Íñigo Upna Orcid; Ederra Urzainqui,  Íñigo Upna Orcid; Gómez Polo, Cristina Upna Orcid; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Gonzalo García, Ramón Upna Orcid (IEEE, 2011)   Artículo / Artikulua  OpenAccess
      This contribution presents a theoretical modelling of the scattering of ferromagnetic microwires in free-space and inside a rectangular waveguide, providing both an analytical solution and a physical interpretation of ...

    • Towards a traceability system based on RFID technology to check the content of pallets within electronic devices supply chain 

      Angulo Martínez, Ignacio; Perallos Ruiz, Asier; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid; Hernández Jayo, Unai; Moreno, Asier; García Zuazola, Ignacio Julio (Hindawi, 2013)   Artículo / Artikulua  OpenAccess
      In the last few years there has been a growing interest in smart solutions capable of dealing with the traceability of products and materials to improve logistical processes. Most of the existing solutions have been ...

    • Transmission spectra changes produced by decreasing compactness of opal-like structures 

      Andueza Unanua, Ángel María Upna Orcid; Echeverría, R.; Morales Zimmermann, Paola Andrea Upna; Sevilla Moróder, Joaquín Upna Orcid (AIP Publishing, 2009)   Artículo / Artikulua  OpenAccess
      Artificial opal-like structures based on spheres and colloidal particles have been fabricated in a controlled way, presenting optical band-gap properties in the optical frequency range. Nonclose packed artificial opals ...

    • Tunable beam steering enabled by graphene metamaterials 

      Orazbayev, Bakhtiyar Upna Orcid; Beruete Díaz, Miguel Upna Orcid; Khromova, Irina Upna Orcid (Optical Society of America, 2016)   Artículo / Artikulua  OpenAccess
      We demonstrate tunable mid-infrared (MIR) beam steering devices based on multilayer graphene-dielectric metamaterials. The effective refractive index of such metamaterials can be manipulated by changing the chemical potential ...

    • Tunable electro-optic wavelength filter based on lossy-guided mode resonances 

      Corres Sanz, Jesús María Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (Optical Society of America, 2013)   Artículo / Artikulua  OpenAccess
      In this work an optical fiber tunable filter based on lossy guided-mode resonances (LGMR) is proposed. It consists of a multilayer structure deposited onto the surface of a plastic cladding removed multimode fiber. The ...

    • Tunable optical fiber pH sensors based on TE and TM Lossy Mode Resonances (LMRs) 

      Zubiate Orzanco, Pablo Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      In this paper, a high sensitivity optical fiber pH sensor based on lossy mode resonance (LMR) generated with transversal electric (TE) and transversal magnetic (TM) polarized light is presented. Poly(allylamine hydrochloride) ...

    • Tunable SESAM-based mode-locked soliton fiber laser in linear cavity by axial-strain applied to a FBG 

      Aporta, I.; Leandro González, Daniel Upna Orcid; Quintela, M. A.; Pérez Herrera, Rosa Ana Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Higuera, José Miguel (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      A self-started stable tunable mode-locked (ML) soliton fiber laser in a linear cavity structure composed by commercial passive elements is presented in this paper. It is based on the combination of an Erbium doped fiber ...

    • Ultra-compact planoconcave zoned metallic lens based on the fishnet metamaterial 

      Pacheco-Peña, Víctor Upna Orcid; Orazbayev, Bakhtiyar Upna Orcid; Torres Landívar, Víctor Upna; Beruete Díaz, Miguel Upna Orcid; Navarro Cía, Miguel Upna Orcid (AIP Publishing, 2013)   Artículo / Artikulua  OpenAccess
      A 1.5λ0 -thick planoconcave zoned lens based on the fishnet metamaterial is demonstrated experimentally at millimeter wavelengths. The zoning technique applied allows a volume reduction of 60% compared to a full fishnet ...

    • Ultra-long (290 km) remote interrogation sensor network based on a random distributed feedback fiber laser 

      Miguel Soto, Verónica de Upna Orcid; Leandro González, Daniel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (Optical Society of America, 2018)   Artículo / Artikulua  OpenAccess
      In this work, an interferometric sensor has been interrogated 290 km away from the monitoring station, reaching the longest distance in fiber optic sensing up to date. This has been attained by employing a double-pumped ...

    • Ultra-wide band corrugated profiled horn antenna design 

      Teniente Vallinas, Jorge Upna Orcid; Gonzalo García, Ramón Upna Orcid; Río Bocio, Carlos del Upna Orcid (IEEE, 2002)   Artículo / Artikulua  OpenAccess
      Nowadays, an increasing number of applications need stable radiation patterns with low sidelobes and low crosspolar levels in a very wide bandwidth. Gaussian Profiled Horn Antennas (GPHA’s) have demonstrated its feasibility ...

    • Ultra-wideband metamaterial filter based on electroinductive-wave coupling between microstrips 

      Navarro Cía, Miguel Upna Orcid; Carrasco, José Miguel; Beruete Díaz, Miguel Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (EMW Publishing, 2009)   Artículo / Artikulua  OpenAccess
      In this work, we analyse the frequency response of microstrip lines coupled by complementary split ring resonators (CSRRs) etched on the ground plane supporting electroinductive waves (EIWs). The single-particle ...
      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).
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