Ara es mostren els items 7-26 de 33

    • Evaluating the impact of the guard band width on the benefits of probabilistic constellation shaping in future flex-grid over multicore fibre optical backbone networks 

      Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Cho, Junho; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      Probabilistic constellation shaping (PCS) has emerged as an advanced modulation technique that provides a fine-grained software-defined trade-off between achievable spectral efficiency (SE) and transmission reach to deliver ...
    • Evaluation of Add/Drop flexibility requirements in future SDM-enabled ROADMs 

      Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Klinkowski, Miroslaw; Comellas Colomé, Jaume; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés obert
      In this paper, we evaluate five different architectures for implementing the Add/Drop module of future Spatial Division Multiplexing (SDM)-enabled Re-configurable Optical Add & Drop Multiplexers (ROADMs) with different ...
    • Evaluation of core-continuity-constrained ROADMs for flex-grid/MCF optical networks 

      Moreno Muro, Francisco Javier; Rumipamba Zambrano, Rubén Darío; Pavón Mariño, Pablo; Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-01)
      Article
      Accés obert
      To effectively keep pace with the global IP traffic growth forecasted in the years to come, flex-grid over multi-core fiber (MCF) networks can bring superior spectrum utilization flexibility, as well as bandwidth scalability ...
    • Evaluation of probabilistic constellation shaping performance in Flex Grid over multicore fiber dynamic optical backbone networks [Invited] 

      Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2022-05)
      Article
      Accés obert
      In this paper, we present a worst-case methodology for estimating the attainable spectral efficiency over end-to-end paths across a Flex Grid over multicore fiber (MCF) optical network. This methodology accounts for physical ...
    • Examen Final 

      Gené Bernaus, Joan M.; Junyent Giralt, Gabriel (Universitat Politècnica de Catalunya, 2015-01-14)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Gené Bernaus, Joan M. (Universitat Politècnica de Catalunya, 2014-06-18)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Junyent Giralt, Gabriel; Gené Bernaus, Joan M. (Universitat Politècnica de Catalunya, 2014-01-09)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Gené Bernaus, Joan M.; Junyent Giralt, Gabriel (Universitat Politècnica de Catalunya, 2015-06-19)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Junyent Giralt, Gabriel; Soneira Ferrando, M. José; Gené Bernaus, Joan M. (Universitat Politècnica de Catalunya, 2016-06-02)
      Examen
      Accés restringit a la comunitat UPC
    • Experimental demonstration of widely tunable rate/reach adaptation from 80 km to 12,000 km using probabilistic constellation shaping 

      Gené Bernaus, Joan M.; Chen, Xi; Cho, Junho; Chandrasekhar, Sethumadhavan; Winzer, Peter (2020)
      Text en actes de congrés
      Accés obert
      We experimentally demonstrate the rate/reach adaptability of probabilistically constellation-shaped quadrature amplitude modulation across from 80 km to 12,000 km using the same 32-GBaud transponder hardware and highlight ...
    • Fiber-Optic Communications 

      Gené Bernaus, Joan M. (Universitat Politècnica de Catalunya, 2010-09)
      Apunts
      Accés obert
    • Flex-Grid/SDM backbone network design with inter-core XT-limited transmission reach 

      Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Pagès Cruz, Albert; Lázaro Villa, José Antonio; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2016-08-01)
      Article
      Accés restringit per política de l'editorial
      Spatial division multiplexing (SDM) has been presented as a key solution to circumvent the nonlinear Shannon limit of standard single-core fibers. To implement SDM, multi-core fiber (MCF) technology becomes a top candidate ...
    • Full-field, carrier-less, polarization-diversity, direct detection receiver based on phase retrieval 

      Chen, Haoshuo; Fontaine, Nicolas K.; Gené Bernaus, Joan M.; Ryf, Roland; Neilson, David T.; Raybon, Gregory (The Institution of Engineering and Technology (IET), 2019)
      Text en actes de congrés
      Accés obert
      We realize dual-polarization full-field recovery using intensity only measurements and phase retrieval techniques based on dispersive elements. 30-Gbaud QPSK waveforms are transmitted over 520-km standard single-mode fiber ...
    • Joint PMD and Chromatic Dispersion Compensation Using an MLSE 

      Gené Bernaus, Joan M.; Winzer, Peter J.; Chandrasekhar, Sethumandhavan; Kogelnik, Herwig (2006)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Experimental investigations show that maximum likelihood sequence estimation (MLSE) in a 10.7 Gb/s non return-to-zero system improves by 60-70% the tolerance to first-order polarization mode dispersion (PMD), even in the ...
    • Modified duobinary polarization-shift keying transmission scheme 

      Gené Bernaus, Joan M.; Soler Rocasalbas, Marçal; Contreras Leyva, Miguel A.; Comellas Colomé, Jaume; Prat Gomà, Josep Joan (2003)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A new version of duobinary polarization-shift keying scheme is proposed. The relocation of the duobinary filter at the receiver side and the optimization of both transmitter and receiver electrical filters offer a receiver ...
    • On the benefits of probabilistic constellation shaping in Flex-Grid/MCF dynamic optical backbone networks 

      Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      In this paper, we propose a novel methodology for estimating the worst-case spectral efficiency (b/s/Hz) of end-to-end paths across a Multi-Core Fiber (MCF)-enabled Flex-Grid optical network, accounting for physical link ...
    • On the scalability of dynamic Flex-Grid/SDM optical core networks 

      Rumipamba Zambrano, Rubén Darío; Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Spadaro, Salvatore (2018-09-04)
      Article
      Accés obert
      Future optical core networks realizing Flex-Grid and Space Division Multiplexing (Flex-Grid/SDM) will be key to effectively cope with the rapid growth of the Internet traffic, thanks to their superior capacity and spectrum ...
    • Practical spectral efficiency estimation for optical networking 

      Gené Bernaus, Joan M.; Perelló Muntan, Jordi; Cho, Junho; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      Assigning the right spectral resources is the key to flex-grid optical networking. Finding the optimal spectral allocation is a daunting task, as there are many variables at play that make accurate network models very ...
    • Quaternary optical transmission system combining phase and polarization shift keying 

      Comellas Colomé, Jaume; Gené Bernaus, Joan M.; Prat Gomà, Josep Joan (2004-07)
      Article
      Accés obert
      A new optical transmission scheme which combines polarization-shift keying and differential phase-shift keying on the same optical carrier is proposed. Simulations carried out show a considerable tolerance toward different ...
    • Random number generation by coherent detection of quantum phase noise 

      Álvarez, Juan Rafael; Sarmiento Hernández, Samael; Lázaro Villa, José Antonio; Gené Bernaus, Joan M.; Pérez Torres, Juan (2020-02-17)
      Article
      Accés obert
      In 2010 Qi et al. [Opt. Lett. 35(3), 312 (2010)] demonstrated a random number generator based on the drift of the phase of a laser due to spontaneous emission, The out-of-the-lab implementation of this scheme presents two ...