Ara es mostren els items 1-20 de 372

  • 1Gbps full-duplex 5GHz frequency slots uDWDM flexible metro/access networks based on VCSEL-RSOA transceiver 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Garces, Ignacio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
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    1Gbps full-duplex 5GHz frequency slot is proposed for uDWDM Flexible Metro-Access Networks. The costeffective ONU transceiver is based on VCSEL as LO for coherent reception and seed for phase-modulated RSOA, providing ...
  • 201. Arquitectura dimunita 

    Universitat Politècnica de Catalunya. Rectorat (Oficina de comunicació i relació amb els mitjans, 2007-10)
    Article
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  • Activitats del Grup de Recerca en Dinàmica no lineal, Òptica no lineal i Làsers (DONLL)" 

    Vilaseca Alavedra, Ramon (Campus de Terrassa de la UPC, 2013-06-13)
    Text en actes de congrés
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  • Adiabatic Processes Realized with a Trapped Brownian Particle 

    Martínez, Ignacio A.; Roldán, Édgar; Dinis, Luis; Petrov, Dmitri; Rica, Raúl A. (APS Physics, 2015-03-27)
    Article
    Accés obert
    The ability to implement adiabatic processes in the mesoscale is of key importance in the study of artificial or biological micro- and nanoengines. Microadiabatic processes have been elusive to experimental implementation ...
  • Algebraic bright and vortex solitons in defocusing media 

    Borovkova, Olga V.; Kartashov, Yaroslav V.; Malomed, Boris A.; Torner Sabata, Lluís (2011-08-15)
    Article
    Accés restringit per política de l'editorial
    We demonstrate that spatially inhomogeneous defocusing nonlinear landscapes with the nonlinearity coefficient growing toward the periphery as (1+|¿|¿) support one- and two-dimensional fundamental and higher-order bright ...
  • Anderson cross-localization 

    Stützer, Simon; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Tünnermann, A.; Nolte, Stefan; Lewenstein, Maciej; Torner Sabata, Lluís; Szameit, Alexander (2012)
    Article
    Accés restringit per política de l'editorial
    We report Anderson localization in two-dimensional optical waveguide arrays with disorder in waveguide separation introduced along one axis of the array, in an uncorrelated fashion for each waveguide row. We show that the ...
  • Anderson localization in Bragg-guiding arrays with negative defects 

    Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2012-10)
    Article
    Accés restringit per política de l'editorial
    We show that Anderson localization is possible in waveguide arrays with periodically spaced defect waveguides having a lower refractive index. Such localization is mediated by Bragg reflection, and it takes place even if ...
  • Anderson localization of light with topological dislocations 

    Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2013-11-01)
    Article
    Accés obert
    We predict Anderson localization of light with nested screw topological dislocations propagating in disordered two-dimensional arrays of hollow waveguides illuminated by vortex beams. The phenomenon manifests itself in the ...
  • Angular surface slitons in sectorial hexagonal arrays 

    Szameit, Alexander; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Heinrich, Matthias; Dreisow, Felix; Pertsch, T; Nolte, Stefan; Tünnermann, A; Lederer, F; Torner Sabata, Lluís (2008-07)
    Article
    Accés restringit per política de l'editorial
    We report on the experimental observation of corner surface solitons localized at the edges joining planar interfaces of hexagonal waveguide array with uniform nonlinear medium. The face angle between these interfaces has ...
  • Area and laser power scalability analysis in photonic networks-on-chip 

    Abadal Cavallé, Sergi; Cabellos Aparicio, Alberto; Lázaro Villa, José Antonio; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Solé Pareta, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Comunicació de congrés
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    In the last decade, the field of microprocessor architecture has seen the rise of multicore processors, which consist of the interconnection of a set of independent processing units or cores in the same chip. As the number ...
  • Arresting wave collapse by wave self-rectification 

    Crasovan, L C; Pérez Torres, Juan; Mihalache, Dumitru; Torner Sabata, Lluís (2003-08)
    Article
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    We put forward a mechanism for tailoring, and even arresting, the collapse of wave packets in nonlinear media, whose dynamics is governed by nonlocal two-dimensional nonlinear Schrödinger-like equations. The key ingredient ...
  • 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'editorial
    We 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 matter-wave solitons at nonlinear interfaces 

    Ye, F; Kartashov, Yaroslav V.; Torner Sabata, Lluís (2006-12)
    Article
    Accés restringit per política de l'editorial
    We predict the existence and study the basic properties of strongly asymmetric matter wave solitons that form at the interface produced by regions with different interatomic interaction strengths in pancake Bose-Einstein ...
  • 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
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    PT-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. ...
  • Bandwidth-enhanced quadratic soliton formation by on-sample single-band amplification 

    Carrasco Rodríguez, Sílvia; Torner Sabata, Lluís (2000-09)
    Article
    Accés restringit per política de l'editorial
    Formation of optical solitons in quadratic nonlinear media under conditions for second-harmonic generation is investigated numerically in the presence of linear amplification at the fundamental frequency band. We show that ...
  • Bloch-wave packet control in truncated modulated optical lattices 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2010-12-15)
    Article
    Accés restringit per política de l'editorial
    We study the reflection of Bloch wave packets at the interface of an optical lattice possessing a shallow longitudinal out-of-phase refractive index modulation in the adjacent waveguides. We show that the relation between ...
  • Bound states in the continuum in spin-orbit-coupled atomic systems 

    Kartashov, Yaroslav V.; Konotop, Vladimir V; Torner Sabata, Lluís (2017-09-14)
    Article
    Accés restringit per política de l'editorial
    We show that the interplay between spin-orbit coupling and Zeeman splitting in atomic systems can lead to the existence of bound states in the continuum (BICs) supported by trapping potentials. Such states have energies ...
  • Bragg guiding of domainlike nonlinear modes and kink arrays in lower-index core structures 

    Ye, F; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2008-06)
    Article
    Accés restringit per política de l'editorial
    We introduce a novel class of stable nonlinear modes trapped in a lower-index film core sandwiched between two optical lattices, or in the cylindrical core of a radial lattice, imprinted in defocusing media. Such a family ...
  • Bragg-type soliton mirror 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2006-02)
    Article
    Accés restringit per política de l'editorial
    We study soliton reflection/transmission at the interface between uniform medium and the optical lattice with focusing Kerr nonlinearity. We reveal that such interfaces afford rich new opportunities for controlling the ...
  • Bright solitons from defocusing nonlinearities 

    Borovkova, Olga V.; Kartashov, Yaroslav; Torner Sabata, Lluís; Malomed, Boris A. (2011-09-19)
    Article
    Accés restringit per política de l'editorial
    We report that defocusing cubic media with spatially inhomogeneous nonlinearity, whose strength increases rapidly enough toward the periphery, can support stable bright localized modes. Such nonlinearity landscapes give ...