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    • La fotònica revoluciona les telecomunicacions 

      Torner Sabata, Lluís; Pérez Torres, Juan; Artigas García, David; Santos Blanco, M. Concepción (1998-12)
      Article
      Accés obert

    • Laser linewidth requirements for remote heterodyne OFDM based PON scenario 

      Escayola Elias, Francisco Javier; Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan (IEEE Press and Wiley, 2004)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The relationship between the FFT size, modulation format and laser linewidth is studied in a remote heterodyne scenario where phase noise is compensated by pilot tones. Results indicate that the laser linewidth tolerance ...

    • New modulation zero-shift method to characterize fast group delay ripple of dispersion-compensating fiber Bragg gratings 

      Santos Blanco, M. Concepción; Bernardo Rodi, Santa Patricia de; Mitre Gutierrez, Marco Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-09-30)
      Article
      Accés obert
      An upgrade to standard modulation phase-shift method is shown to improve accuracy through electrical scan of the optical spectrum. Experiments have allowed the capture of fast group delay ripple of a dispersion-compensating ...

    • Numerical investigation of the bias-path model for the photocurrent in photoconductive antennas 

      Mas Mendoza, Sergi; López Menchón, Héctor; Santos Blanco, M. Concepción (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Numerical results on the implementation of a computationally efficient algorithm for finding the instantaneous photocurrent across the gap volume in Photoconductive antennas (PCAs) through solution of one-dimensional (1D) ...

    • OFDM-PON performance with limited quantization 

      Escayola Elias, Francisco Javier; Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
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      A study of digital-analogue converter quantization effects and the minimum resolution required in an OFDMA-PON is carried out with 10 Gbps transceivers. The PON is based on DD over a maximum of 100 km fibre length. Results ...

    • Optical beam steering network with multiband capability 

      Vega, Sara; Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción (Universidad de Málaga, 2020)
      Text en actes de congrés
      Accés obert
      A multiwavelength (MW) optical true time delay Network (OTTDN) to feed a phased array antenna (PAA) is presented. Beam steering capabilities can be demonstrated when applying MW tuning. A Dual Electrode Mach Zehnder Modulator ...

    • Optical phase effects in reconfigurable microwave photonic filters with multiple wavelength input 

      Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción (2021-11)
      Article
      Accés obert
      Microwave photonic filters with a multiple wavelength input are analyzed. A comprehensive model assessing the impact of the phase characteristic of the optical stage is presented from which optimized design rules have been ...

    • Optical solitons in quadratic nonlinear media and applications to all-optical switching and routing devices 

      Santos Blanco, M. Concepción (Universitat Politècnica de Catalunya, 1998-03-02)
      Tesi
      Accés obert
      Esta tesis constituye un estudio detallado y exhaustivo de las propiedades de una variedad específica de ondas ópticas solitarias. Observadas experimentalmente por primera vez en 1995, estas ondas estan formadas por un ...

    • Optimum carrier to signal power ratio for remote heterodyne DD-OFDM in PONs 

      Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan (2013-07)
      Article
      Accés restringit per política de l'editorial
      The carrier to signal power ratio (CSPR) in a directdetection optical orthogonal frequency division multiplexing (OFDM) system based on remote heterodyne scheme is optimized in a passive optical network (PON) downlink. ...

    • Optimum CSPR evaluation of heterodyne envelope receivers in OFDM-PONs 

      Shariati, Mohammad Behnam; Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A heterodyne envelope (HE) receiver (RX) is investigated in the context of orthogonal frequency division multiplexing (OFDM) passive optical networks (PONs). Impacts of limited roll-off factor of shaping filter and required ...

    • Performance Projection of Electro-Optical Modulators for Radio-Over-Fiber in 2 GHz Cryogenic Front-End Receivers 

      Menéndez Nadal, Óscar; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Santos Blanco, M. Concepción; O'Callaghan Castellà, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-06-30)
      Article
      Accés obert
      We present the design of a Y-Ba-Cu-O on LiNbO/sub 3/ cryogenic electro-optical modulator for analog 2 GHz applications. A resonant configuration of coplanar electrodes is considered, showing improvements with respect to ...

    • Physical layer evaluation of OFDM-based access networks 

      Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan; Krimmel, H.G.; Kavatzikidis, T.; Giacoumidis, E.; Tomkos, Ioannis (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
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      In this paper, we present a physical layer parameter optimization of direct-detection optical OFDM techniques at bitrates of 10 Gb/s and 40 Gb/s using an intensity modulation and two types of field modulation transmitte ...

    • Rayleigh backscattering rejection in single-laser homodyne transceiver for UD-WDM using λ-Shifting 

      Masanas Jiménez, Miquel; Santos Blanco, M. Concepción; Tabares Giraldo, Jeison; Polo Querol, Víctor; Prat Gomà, Josep Joan (2021-04-01)
      Article
      Accés obert
      With the aim of using a single laser per transceiver in single fiber splitter-based passive optical networks (PON) with coherent homodyne receivers, we apply wavelength shifting in an ultra-dense wavelength division ...

    • Spatial walking solitons in quadratic nonlinear crystals 

      Torner Sabata, Lluís; Mihalache, Dumitru; Mazilu, Dumitru; Santos Blanco, M. Concepción; Akhmediev, Nail (Optical Society of America, 1998)
      Article
      Accés obert
      We investigate the properties of the families of spatial walking solitons propagating in planar waveguides made of quadratic nonlinear media under conditions for second-harmonic generation in the presence of Poynting vector ...

    • Splitting of Light Beams with Phase dislocations into Solitons in Quadratic Nonlinear Media 

      Petrov, Dimitri; Santos Blanco, M. Concepción; Torner Sabata, Lluís (A. Hidalgo, 1997-05-31)
      Article
      Accés obert
      We investigate the propagation of intense light beams in bulk quadratic nonlinear crystals under conditions for second-harmonic generation. We show numerically that input light beams with a spiral phase front dislocation ...

    • Square root module to combat dispersion-induced nonlinear distortion in Radio-over-Fiber Systems 

      Prat Gomà, Josep Joan; Santos Blanco, M. Concepción; Omella Cáncer, Mireia Esther (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-09-15)
      Article
      Accés obert
      Reduced dispersion-induced harmonics levels are reported for analogue radio-over-fiber systems by using a linearized receiver incorporating a memoryless electronic circuit with square root (SQRT)-like transfer function, ...

    • Terahertz Technologies. Part 1: Numerical answer questions 

      Santos Blanco, M. Concepción (Universitat Politècnica de Catalunya, 2020-06)
      Examen
      Accés restringit a la comunitat UPC

    • Terahertz Technologies. Part 2: Multiple choice questions 

      Santos Blanco, M. Concepción (Universitat Politècnica de Catalunya, 2020-06-19)
      Examen
      Accés restringit a la comunitat UPC

    • Terahertz Technologies: enunciat 

      Santos Blanco, M. Concepción (Universitat Politècnica de Catalunya, 2020-06-19)
      Examen
      Accés restringit a la comunitat UPC

    • Walking solitons 

      Torner Sabata, Lluís; Santos Blanco, M. Concepción; Mihalache, Dumitru; Mazilu, D; Crasovan, L C (1997-12)
      Article
      Accés restringit per política de l'editorial
      By and large, optical