Exploració per autor "Botey Cumella, Muriel"
Ara es mostren els items 1-20 de 100
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A New learning experience: voluntary preparatory course for the bachelor’s degree in engineering
Botey Cumella, Muriel; Alcaraz, Olga (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2012-03)
Article
Accés obertThis paper reports on a new experience carried out at school associated with the Technical University of Catalonia, Universitat Politècnica de Catalunya (UPC) in September 2010. The aim is to describe the organization, ... -
Acoustically penetrable sonic crystals based on fluid-like scatterers
Cebrecos, A.; Romero García, Vicenç; Pico Vila, Rubén; Sánchez Morcillo, Victor José; Botey Cumella, Muriel; Herrero Simon, Ramon; Cheng, Yu Chieh; Staliunas, Kestutis (2015-01-21)
Article
Accés obertWe propose a periodic structure that behaves as a fluid-fluid composite for sound waves, where the building blocks are clusters of rigid scatterers. Such building-blocks are penetrable for acoustic waves, and their properties ... -
All-dielectric self-cloaked structures
Hayran, Zeki; Kurt, H.; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (2018-03-17)
Article
Accés obertA general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ... -
Anomalous group velocity at the high energy range of real 3D photonic nanostructures
Botey Cumella, Muriel; Martorell Pena, Jordi (SPIE-The International Society for Optical Engineering, 2010-04-12)
Text en actes de congrés
Accés obertWe perform a theoretical study on the group velocity for finite thin artificial opal slabs made of a reduced number of layers in the spectral range where the light wavelength is on the order of the lattice parameter. The ... -
Asymmetric light transmission by using 2D PT-symmetric photonic nanostructure
Turduev, M.; Botey Cumella, Muriel; Herrero Simon, Ramon; Kurt, H.; Staliunas, Kestutis; Giden, I. (Wiley-IEEE Press, 2015)
Text en actes de congrés
Accés restringit per política de l'editorialWe propose for the first time a simple realization of a two-dimensional Parity-Time symmetric hexagonal shaped photonic structure composed of honeycomb lattice. The structure has a symmetric periodic modulation of the ... -
Asymmetric light transmission in PT-Symmetric microring resonators
Giden, I.; Dadashi, Kh.; Botey Cumella, Muriel; Herrero Simon, Ramon; Staliunas, Kestutis; Kurt, Hamza (2016-03-15)
Article
Accés restringit per política de l'editorialWe propose a new type of add-drop microring resonator made of gain and loss materials. Microring resonators are compact, narrow band, and optical channel dropping filters. In such linear systems, light transmission to ... -
Asymmetric transmission from a 2D PT-symmetric honeycomb nanostructure
Botey Cumella, Muriel; Herrero Simon, Ramon; Turduev, M.; Zhao, D.; Giden, I.; Kurt, H.; Staliunas, Kestutis (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Comunicació de congrés
Accés restringit per política de l'editorialWe propose a simple realization of a 2-dimensonal (2D) PT-symmetric photonic structure: a honeycomb arrangement of alternating cylinders with gain or loss in a dielectric background. The structure provides a periodic ... -
Axisymmetric photonic structures with PT-symmetry
Ahmed Waseem, Waqas Waseem; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2016)
Text en actes de congrés
Accés obertPT-symmetric structures in photonic crystals, combining refractive index and gain-loss modulations is becoming a research field with increasing interest due to the light directionality induced by these particular potentials. ... -
Beam shaping in spatially modulated broad-area semiconductor amplifiers
Herrero Simon, Ramon; Botey Cumella, Muriel; Radziunas, Mindaugas; Staliunas, Kestutis (2012-12-15)
Article
Accés obertWe propose and analyze a beam-shaping mechanism that in broad-area semiconductor amplifiers occurs due to spatial pump modulation on a micrometer scale. The study, performed under realistic parameters and conditions, ... -
Brightness enhancement in Non-Hermintian VCSELs
Waseem Ahmed, Waqas; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (Optical Society of American (OSA), 2019)
Text en actes de congrés
Accés restringit per política de l'editorialVertical Cavity Surface Emitting lasers (VCSELs) are compact and efficient light sources useful for a variety of applications. However, due to lack of a transverse mode control mechanism, such lasers suffer from poor spatial ... -
Chiral modes in 2D PT-symmetric nanostructures
Botey Cumella, Muriel; Herrero Simon, Ramon; Turduev, M.; Kurt, H.; Staliunas, Kestutis (Springer International Publishing, 2015-11-15)
Capítol de llibre
Accés restringit per política de l'editorialWe propose the stabilization of the output beam of Broad Area Semiconductor (BAS) amplifiers through the introduction of a spatially periodic modulated potential. We show that a periodic modulation of the pump profile in ... -
Control and enhancement of beam quality of broadarea semiconductor devices and arrays by multimode interference couplers and two-dimensional gain modulation
Murad, M.; Sorel, M.; Herrero Simon, Ramon; Botey Cumella, Muriel; Marsh, J.H.; Staliunas, Kestutis (Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés obertIt is proposed to control the beam quality of broad-area semiconductor devices by two-dimensional structuring enforcing phase coherence across the device. First results based on MMI couplers are presented. -
Curs 0: preparació per als estudis a l’EEBE
Tornil Sin, Sebastián; Botey Cumella, Muriel; Alarcón Jordán, Marta; Alcaraz Sendra, Olga; Ametller Congost, Lluís; Bruna Escuer, Pere; Camps Anaya, Germinal; Carmona Mejías, Ángeles; Claverol Aguas, Mercè; Crespo Artiaga, Daniel; Pablo Ribas, Joan de; Barrio Casado, María del; Valle Mendoza, Luis Javier del; Encinas Bachiller, Andrés Marcos; Farran Marsà, Adriana; Florido Pérez, Antonio; Gámez López, Antonio; García Senz, Domingo; Gibert Agulló, Oriol; Ikhouane, Fayçal; Jiménez Jiménez, María José; José Pont, Jordi; Linares Alegret, Manuel; Lloveras Muntané, Pol Marcel; López López, José; Macovez, Roberto; Mas Blesa, Albert; Mitjana Riera, Margarida; Muñoz Romero, José; Pardo Soto, Luis Carlos; Periago Oliver, M. Cristina; Pineda Soler, Eloi; Pradell Cara, Trinitat; Ruiz Ordóñez, Magda; Sala Cladellas, Glòria; Soler Turu, Lluís; Tamarit Mur, José Luis; Vendrell Villafruela, Xavier; Zanuy Gomara, David (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
Article
Accés obertAquest article presenta el desenvolupament i primers resultats d'ús d'un conjunt de cursos virtuals que pretenen proporcionar uns coneixements inicials bàsics de Matemàtiques, Física i !ímica als estudiants que accedeixen ... -
Diffractive effects in 1D and 2D gain/loss periodic spatial modulated materials
Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
Text en actes de congrés
Accés restringit per política de l'editorialThe propagation of light through materials with periodically modulated gain can present different effects that are analyzed in the paper. The characterization of these gain/loss metamaterials (GLM) with a two-dimensional ... -
Direct- and Inverse-design for non-Hermitian smart light management
Botey Cumella, Muriel; Ahmed, Waqas W.; Herrero Simon, Ramon; Staliunas, Kestutis (META Conference, 2022)
Text en actes de congrés
Accés obertWe present direct and inverse-design strategies to achieve ‘on demand’ dynamical manipulation of light by non-Hermitian potentials. The direct approach, based on a generalized Hilbert Transform, widens the concept of the ... -
Directionality fields generated by a local Hilbert transform
Ahmed Waseem, Waqas Waseem; Herrero Simon, Ramon; Botey Cumella, Muriel; Hayran, Zeki; Kurt, Hamza; Staliunas, Kestutis (American Physical Society, 2018-03-15)
Article
Accés obertWe propose an approach based on a local Hilbert transform to design non-Hermitian potentials generating arbitrary vector fields of directionality, ¿p(¿r), with desired shapes and topologies. We derive a local Hilbert ... -
Dispersion management in spatially modulated broad band semiconductors
Herrero Simon, Ramon; Botey Cumella, Muriel; Khumar, N.P.; Staliunas, Kestutis (IEEE, 2011)
Text en actes de congrés
Accés restringit per política de l'editorial -
Enhanced transmission band in periodic media with loss modulation
Cebrecos, A.; Pico Vila, Rubén; Romero García, Vicenç; Yasser, A.M.; Maigyte, Lina; Herrero Simon, Ramon; Botey Cumella, Muriel; Sánchez Morcillo, Victor José; Staliunas, Kestutis (2014-11-17)
Article
Accés obertWe study the propagation of waves in a periodic array of absorbing layers. We report an anomalous increase of wave transmission through the structure related to a decrease of the absorption around the Bragg frequencies. ... -
Ensembles of PT-dipoles for sound propagation management
Arias Casals, Helena; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (META Conference, 2022)
Comunicació de congrés
Accés restringit per política de l'editorialAmong other possible designs, metamaterials constructed from ensembles of meta-dipoles emerged as a flexible platform to redirect wave fields. We present an acoustic PT-dipole constructed from two Helmholtz resonators with ... -
Exercicis de Física I: fonaments de mecànica
Alcaraz Sendra, Olga; Botey Cumella, Muriel (Universitat Politècnica de Catalunya, 2013)
Problema, exercici
Accés obert