The Optical Communications Group (GCO) is part of the Signal Theory and Communications Department (TSC). Our key research areas involve Optical Fiber Technologies, Raman Spectroscopy and High-Speed Networking.

Our experience is related to optical wavelength domain transport and access networks (WDM, HDWDM, SCM), broadband fiber transmission, sources and receivers, all-optical amplification, optical heterodyne detection, wavelength stabilization and monitoring, transparent WDM network architectures and management, optical linear and non-linear distortions, polarization/PMD treatment and network quality monitoring.

The group is integrated in the Advanced Broadband Communications Centre (CCABA) -CCABA is the acronym of ''Centre de Comunicacions Avançades de Banda Ampla''. The CCABA was set up in January 1994 with the aim of consolidating a multi-disciplinary research group: the Integrated Broadband Communications research group, the Optical Communications, the Radio Communications and the Broadband Communications groups. The UPC supports this research centre and its laboratory was partially funded by the Spanish Education Ministry (CICYT) and by Research Commission of the Catalan Government (CIRIT) under several grants. In the EC IV Framework Programme the UPC participated in the Spanish National Host through the network platform of the CCABA.

The GCO laboratories are fully equipped with broadband instrumentation for WDM and high bit rate opto-electronic system design and characterization, as well as long haul fiber link measurements and IP-ATM-SDH-WDM networking.

Pàgina web del Departament

Enviaments recents

  • High capacity optical networks based on space division multiplexing 

    Behnam Shariati, Mohammad; Comellas Colomé, Jaume; Klonidis, Dimitrios; Velasco Esteban, Luis Domingo; Tomkos, Ioannis (John Wiley & sons, 2017-09-01)
    Capítol de llibre
    Accés restringit per política de l'editorial
    This book discusses Elastic Optical Networks (EONs) from an operational perspective. It presents algorithms that are suitable for real-time operation and includes experimental results to further demonstrate the feasibility ...
  • On the scalability of dynamic Flex-Grid/SDM optical core networks 

    Rumipamba Zambrano, Rubén Darío; Perelló Muntan, Jordi; Gene Bernaus, Joan M.; Spadaro, Salvatore (2018-09-04)
    Article
    Accés restringit per política de l'editorial
    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 ...
  • Route, modulation format, MIMO and spectrum assignment in Flex-Grid/MCF transparent optical core networks 

    Rumipamba Zambrano, Rubén Darío; Perelló Muntan, Jordi; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2018-08-15)
    Article
    Accés obert
    In this paper, we target an optimal multiple-input multiple-output digital signal processing (MIMO-DSP) assignment to super-channels affected by intercore crosstalk (ICXT) in multicore fiber (MCF) enabled transparent optical ...
  • Space continuity constraint in dynamic Flex-Grid/SDM optical core networks: An evaluation with spatial and spectral super-channels 

    Rumipamba Zambrano, Rubén Darío; Moreno Muro, Francisco Javier; Perelló Muntan, Jordi; Pavón Mariño, Pablo; Spadaro, Salvatore (Elsevier, 2018-08)
    Article
    Accés restringit per política de l'editorial
    Space Division Multiplexing (SDM) appears as a promising solution to overcome the capacity limits of single-mode optical fibers. In Flex-Grid/SDM optical networks, nodes offering full interconnection between input/output ...
  • Building autonomic optical whitebox-based networks 

    Velasco Esteban, Luis Domingo; Sgambelluri, Andrea; Casellas Regi, Ramón; Gifré Renom, Lluís; Izquierdo Zaragoza, José Luis; Fresi, Francesco; Paolucci, Francesco; Martínez Rivera, Ricardo Victor; Riccardi, Emilio (Institute of Electrical and Electronics Engineers (IEEE), 2018-08-01)
    Article
    Accés obert
    Disaggregation at the optical layer is expected to bring benefits to network operators by enriching the offering of available solutions and enabling the deployment of optical nodes that better fit their needs. In this ...
  • Proactive defragmentation in elastic optical networks under dynamic load conditions 

    Comellas Colomé, Jaume; Vicario, L.; Junyent Giralt, Gabriel (2018-04-13)
    Article
    Accés restringit per política de l'editorial
    The main weakness of elastic optical networks (EON), under dynamic traffic conditions, stems from spectrum fragmentation. A lot of research efforts have been dedicated during recent years to spectrum defragmentation. In ...
  • Autonomic disaggregated multilayer networking 

    Gifré Renom, Lluís; Izquierdo Zaragoza, José Luis; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2018-05-01)
    Article
    Accés restringit per política de l'editorial
    Focused on reducing capital expenditures by opening the data plane to multiple vendors without impacting performance, node disaggregation is attracting the interest of network operators. Although the software-defined ...
  • All-Optical Intra-PON Data Routing Between ONUs with a MG-Y Tunable Laser as 2.5 Gbps Burst-Mode Transmitter 

    Bonada Bó, Francesc Xavier; Schrenk, Bernhard; Fabrega Sanchez, Josep Maria; Lázaro Villa, José Antonio; Forzati, Marco; Jean Rigole,, Pierre; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Direct communication between ONUs is experimentally demonstrated with a tunable MG-Y laser in a ring+tree PON for 640 users, without passing electrically powered equipment.
  • FSK plus ASK/ASK operation for optical 20/10 gbps access networks with simple reflective user terminals 

    Schrenk, Bernhard; de Valicourt, Guilhem; Lázaro Villa, José Antonio; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Doubling of the downstream rate by reusing the reflective upstream modulator is demonstrated. With just two photo-detectors, a RSOA and a power splitter at the ONU, a 20/10 Gbps mode can be provided per wavelength.
  • Bringing data analytics to the network nodes 

    Pérez Vela, Alba; Via Baraldés, Anna; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (VDE-Verlag, 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Monitoring every 15 minutes imposes long traffic anomaly detection times and thus, the monitoring frequency needs to be increased to reduce those times, which entails large amount of monitoring data collected. Consequently, ...
  • Soft failure localization during commissioning testing and lightpath operation 

    Pérez Vela, Alba; Behnam Shariati, Mohammad; Ruiz Ramírez, Marc; Cugini, Filippo; Castro Casales, Alberto; Lu, Hongbo; Proietti, Roberto; Comellas Colomé, Jaume; Castoldi, Piero; Yoo, Sung-Joo Ben; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-09)
    Article
    Accés restringit per política de l'editorial
    In elastic optical networks (EONs), effective soft failure localization is of paramount importance to early detection of service level agreement violations while anticipating possible hard failure events. So far, failure ...
  • Reducing virtual network reconfiguration and traffic losses under multiple traffic anomalies 

    Pérez Vela, Alba; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Optical Society of American (OSA), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Multiple OD traffic anomalies can arise exceeding pre-planned capacity and causing congestion. We propose to detect anomalous and suspicious ODs to reduce virtual network reconfiguration and total traffic losses. Results ...

Mostra'n més