Now showing items 1-20 of 20

    • Anisotropy-induced photonic bound states in the continuum 

      Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (Nature, 2017-03-20)
      Article
      Open Access
      Bound states in the continuum (BICs) are radiationless localized states embedded in the part of the parameter space that otherwise corresponds to radiative modes. Many decades after their original prediction1, 2, 3 and ...
    • Caracterització, modelat i aplicacions dels moduladors de polarització birefringet de LINbO3 

      Piñol Jurado, Joan Miquel (Universitat Politècnica de Catalunya, 2008-06)
      Master thesis (pre-Bologna period)
      Open Access
      L'objectiu principal d'aquest projecte és caracteritzar el modulador de polarització electroòptic fabricat amb tecnologia d'òptica integrada. Concretament, es definiran els paràmetres principals del modulador com són el ...
    • Classical and quantum applications of optical four wave mixing in an integrated silicon nitride platform 

      Triginer Garcés, Gil (Universitat Politècnica de Catalunya, 2014-12-19)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   University of Colorado Boulder
      [ANGLÈS] Integrated photonics provide a very versatile platform for nonlinear optics experiments, due to the tight field confinement that high index contrast structures offer and their great degree of tunability. Two ...
    • Design of a silicon photonic multimode interference coupler 

      Sosa Andrade, Andrés (Universitat Politècnica de Catalunya / Technische Universität Berlin, 2012-12-10)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Technische Universität Berlin
      [ANGLÈS] RSoft Design is a software used by researchers, system integrators, manufacturers and service providers, thanks to its tools which provide a wide range of applications, from the design of photonic components to ...
    • Designing Graphene based Silicon Devices 

      Herranz Salazar, Francisco (Universitat Politècnica de Catalunya, 2016-02)
      Bachelor thesis
      Open Access
      The objective of the project is the design of new Graphene - Silicon devices for optical communications in future low energy consumption optical networks. For this design it will be used commercial software and MIT designing ...
    • Disseny de dos circuits opto-electrònics desplaçadors de la longitud d'ona per xarxes d'accés per fibra òptica (FTTH) 

      Solé Sánchez, Víctor (Universitat Politècnica de Catalunya, 2012-11-21)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] In this work it is presented the design and simulation of two different opto-electronic circuits to perform a wavelength shifting at optical network units (ONU) of Fiber To The Home (FTTH) networks. This significantly ...
    • Estudio teórico de una unión Y activa para aplicaciones en dispositivos de óptica integrada 

      Recolons Martos, Jaume; Torner Sabata, Lluís; Canal Bienzobas, Fernando (1988)
      Conference report
      Open Access
    • Fabricació de dispositius fotònics integrats 

      Modolell Hernàndez, Marc (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      This project has focused on the fabrication and characterization of hydrogenated amorphous silicon (a-Si:H) thin films to fabricate photonic devices on them, which can be applied to make revolutionary applications in the ...
    • Generation of polarization entangled photon pairs in Bragg reflection waveguides 

      Vallés Marí, Adam (Universitat Politècnica de Catalunya, 2012-09-06)
      Master thesis
      Open Access
      [ANGLÈS] We report the observation of polarization entangled photon pairs generated by means of type-II spontaneous parametric down-conversion (SPDC) within an AlGaAs Bragg reflection waveguide (BRW). Even though SPDC in ...
    • Graphene-based multimode interference device design for optical switching applications 

      T'jollyn, Servaas (Universitat Politècnica de Catalunya, 2018-08-27)
      Master thesis
      Open Access
      Covenantee:   Vrije Universiteit Brussel / Universiteit Gent
      The relatively small size and low energy consuming switching potential offered by graphene-based electro-optic and electro-absorption switches has attracted a lot of attention in the photonics community recently and there ...
    • Guided to leaky mode transition in uniaxial optical slab waveguides 

      Torner Sabata, Lluís; Recolons Martos, Jaume; Pérez Torres, Juan (1993-10)
      Article
      Open Access
      The guided-to-leaky hybrid mode transition in slab optical waveguides made on uniaxial crystals such as LiNbO/sub 3/, or LiTaO/sub 3/, is analyzed. Two different guided-to-leaky transitions have been identified, namely the ...
    • Guided-to-leaky mode transition in uniaxial optical slab waveguides 

      Torner Sabata, Lluís; Recolons Martos, Jaume; Pérez Torres, Juan (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1993-10-01)
      Article
      Open Access
      The guided-to-leaky hybrid mode transition in slab optical waveguides made on uniaxial crystals such as LiNbO3, or LiTaO 3, is analyzed. Two different guided-to-leaky transitions have been identified, namely the ordinary ...
    • Leaky modes in multilayer uniaxial optical waveguides 

      Torner Sabata, Lluís; Canal Bienzobas, Fernando; Hernández Marco, Jordi (1990-04)
      Article
      Open Access
      The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle ...
    • Leaky modes in multilayer uniaxial optical waveguides 

      Torner Sabata, Lluís; Hernández Marco, Jordi; Canal Bienzobas, Fernando (OPTICAL SOC AMER, 1990-04-01)
      Article
      Open Access
      The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle ...
    • Metodos de caracterizacion de moduladores electro-opticos 

      Diaz Alonso, Jaume (Universitat Politècnica de Catalunya, 2011-06-30)
      Bachelor thesis
      Open Access
    • Optical characterisation of the whispering gallery modes in Nd3+ doped glass active microspheres 

      Baselga Bacardit, Marta (Universitat Politècnica de Catalunya, 2011-07-15)
      Master thesis
      Open Access
      English: The project was focused on the optical characterization of Nd3+ doped glass active microspheres of sizes of few micrometers. Using micro photoluminescence (time resolved and continuous wave) and micro transmission ...
    • Phase Diffusion effects in InP semiconductor lasers 

      Martínez Pàmias, Berta (Universitat Politècnica de Catalunya, 2022-09-06)
      Master thesis
      Restricted access - confidentiality agreement
    • Reglas de escala para bifurcaciones en guías ópticas 

      Recolons Martos, Jaume; Torner Sabata, Lluís; Canal Bienzobas, Fernando (1990)
      Conference report
      Open Access
    • Transition from Dirac points to exceptional points in anisotropic waveguides 

      Gomis Bresco, Jordi; Artigas García, David; Torner Sabata, Lluís (American Physical Society, 2019-10-04)
      Article
      Open Access
      We uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the ...
    • Universal diagrams for te waves guided by thin films bounded by saturable nonlinear media 

      Pérez Torres, Juan; Torner Sabata, Lluís (1993-03)
      Article
      Open Access
      It is shown that universal V-b diagrams provide a powerful tool when analyzing the stationary waveguiding properties of the TE waves guided by a thin film bounded by a saturable nonlinear substrate or cladding. For a wide ...