Exploració per tema "Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica"

Ara es mostren els items 1-20 de 620

    • 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
      Accés restringit per política de l'editorial
      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 ...

    • 2-μm wavelength, high-energy Ho:YLF chirped-pulse amplifier for mid-infrared OPCPA 

      Hemmer, M.; Sánchez, D.; Jelínek, M.; Smirnov, Vadim; Jelinkova, H.; Kubeček, V.; Biegert, Jens (OSA, 2015-02-02)
      Article
      Accés obert
      A 2-μm wavelength laser delivering up to 39-mJ energy, ∼10 ps duration pulses at 100-Hz repetition rate is reported. The system relies on chirped pulse amplification (CPA): a modelocked Er:Tm:Ho fiber-seeder is followed ...

    • 3d optical tomography of ferroelectric domains and domain walls 

      Gjaci, Reison (Universitat Politècnica de Catalunya, 2022-09-07)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Kungliga Tekniska högskolan
      In ferroelectric materials, the spontaneous polarization can be reversibly switched by an applied electric field, which makes them attractive for applications in non-volatile memories and other electro-active devices. ...

    • A 461 nm laser system for an ultracold strontium quantum gas experiment 

      Estarellas Perales, Antonio (Universitat Politècnica de Catalunya, 2021-09-09)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Institut de Ciències Fotòniques (ICFO)
      In recent years, ultra-cold atomic gases have emerged as a novel platform for the study of quantum many-body systems. Exploiting these gases, it is possible to synthesize quantum matter of highly controllable properties ...

    • A bright single photon source: Strong coupling of a single molecule to a plasmonic nano-antenna cavity 

      Izquierdo López, Raúl (Universitat Politècnica de Catalunya, 2019-07-23)
      Projecte Final de Màster Oficial
      Accés obert
      Single photon emitters are quantum light sources that can enable a variety of quantum based technologies such as quantum information or quantum random number generation, among others. These single photon emitters can have ...

    • A Combinatorial Approach to Nonlocality and Contextuality 

      Acín dal Maschio, Antonio; Fritz, Tobias; Leverrier, Anthony (Springer, 2015-03-01)
      Article
      Accés obert
      So far, most of the literature on (quantum) contextuality and the Kochen– Specker theorem seems either to concern particular examples of contextuality, or be considered as quantum logic. Here, we develop a general formalism ...

    • A comprehensive characterisation of polarization-entangled photon pairs generated in a double-pass configuration 

      Abellán, Carlos, 1990- (Universitat Politècnica de Catalunya, 2014-07-18)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] We have investigated a highly efficient source of polarization-entangled photons for long-distance free-space communication and other experiments involving significant propagation loss. The source is an evolution ...

    • A generation method for arbitrary spatially-variant polaritzation 

      Schaschek, Fabian (Universitat Politècnica de Catalunya, 2011-09-07)
      Projecte/Treball Final de Carrera
      Accés obert
      A new approach for the generation of arbitrary spatially-variant polarization of a light beam has been developed by manipulating vertical and horizontal field component of the optical signal individually in a Mach-Zehnder ...

    • A high-throughput synthesis protocol for accelerated exploration of novel mixed perovskite materials 

      Toscanini, Zachary (Universitat Politècnica de Catalunya, 2022-07-20)
      Projecte Final de Màster Oficial
      Accés obert

    • A plasmonic accuracy biosensor using a single laser diode 

      Bañares Palacios, Paula (Universitat Politècnica de Catalunya, 2016-09-07)
      Projecte Final de Màster Oficial
      Accés obert
      A theoretical model was implemented to obtain the total specular reflection of a variable external multicavity for out of normal incidence and different polarisations. The model was theoretically and experimentally validated ...

    • A QoS-Aware Dynamic Bandwidth Allocation algorithm for passive optical networks with non-zero laser tuning time 

      Zehri, Mohammad Habib; Haastrup, Adebanjo; Rincón Rivera, David; Piney da Silva, José Ramón; Sallent Ribes, Sebastián; Bazzi, Ali (2021-05-10)
      Article
      Accés obert
      The deployment of new 5G services and future demands for 6G make it necessary to increase the performance of access networks. This challenge has prompted the development of new standardization proposals for Passive Optical ...

    • A super frequency-shifter: enhancing the capabilities of acousto-optic modulators 

      Salazar Serrano, Luis José (Universitat Politècnica de Catalunya, 2012-09-06)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] We put forward a new scheme to enhance the capabilities of currently available acousto-optic frequency shifters (AOFS) by making use of the idea of weak value amplification. The key result of our approach is that ...

    • A two dimensional KTiOPO4 photonic crystal grown using a macroporous silicon template 

      Peña Revellez, Alexandra; Finizio, Sergio Di; Todorov Trifonov, Trifon; Carvajal, Joan Josep; Aguiló Díaz, Magdalena; Pallarès Marzal, Josep; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Marsal Garví, Lluís Francesc; Diaz, Francesc; Martorell Pena, Jordi (2006-09)
      Article
      Accés restringit per política de l'editorial
      2D KTiOPO4 photonic crystals are fabricated using a silicon membrane of air holes as a template. Columns of KTiOPO4 are grown by liquid-phase epitaxy from a substrate into such air holes. The crystallographic orientation ...

    • Achievable data rate of coordinated multi-point transmission for visible light communications 

      Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users canachieve when phosphor-converted white LED panels are usedto provide illumination and communication simultaneously. ...

    • Adaptive optics multiphoton microscopy 

      Artal, P; Gualda Manzano, Emilio José; Bueno García, Juan Manuel (2010)
      Text en actes de congrés
      Accés obert
      We have developed an adaptive optics multiphoton microscope. The multiphoton imaging system combines an ultrafast high-power laser, a scanning unit, a motorized Z-scan device and a photon-counting detector. The adaptive ...

    • 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 ...

    • Advanced 3D perception based on 2D projection and sensor fusion for autonomous vehicles 

      Guerrero Casado, Quim (Universitat Politècnica de Catalunya, 2023-08)
      Projecte Final de Màster Oficial
      Accés obert
      Deep learning (DL) has experienced rapid growth in recent years due to its universal learning approach, robustness, generalization, and scalability. Furthermore, the field of autonomous driving cars (ADC) is continuously ...

    • Advanced nanoscopy tools to monitor intracellular membrane trafficking 

      Pons Lanau, Roger (Universitat Politècnica de Catalunya, 2021-09-09)
      Projecte Final de Màster Oficial
      Accés obert
      Intracellular membrane trafficking function is to transport proteins and other macromolecules by membrane bound vesicles throughout the cell and it is key for maintaining homeostasis and responding to signaling processes. ...

    • Agenda estratégica de investigación e innovación de la fotónica en España 

      Royo Royo, Santiago (Fotonica21, 2022-11-30)
      Llibre
      Accés obert
      La Agenda Estratégica de Innovación es una de las herramientas clave de que dispone la comunidad relacionada con la Fotónica de dar a conocer sus necesidades y actividades. Indica cuáles son las prioridades que la industria ...

    • Al2O3/TiO2 inverse opals from electrosprayed self-assembled templates 

      Coll, Arnau; Bermejo Broto, Sandra; Hernández, David; Castañer Muñoz, Luis María (2018-01-19)
      Article
      Accés obert
      The fabrication of high optical quality inverse opals is challenging, requiring large size, three-dimensional ordered layers of high dielectric constant ratio. In this article, alumina/TiO2–air inverse opals with a 98.2% ...