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

  • Quantifying dynamic traffic in elastic optical networks 

    Comellas Colomé, Jaume; Vicario, L.; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work is focused on the characterization of the traffic allocated in Elastic Optical backbone networks when different dynamic traffic profiles are generated. Extensive simulations are done to statistically model the ...
  • Using dual-path allocation for partial traffic protection in elastic optical networks 

    Junyent Giralt, Gabriel; Comellas Colomé, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Multi-path allocation has been proposed as a simple way to achieve traffic protection in different networking domains. In this work dual-path allocation is proposed for Elastic Optical Networks (EON) assuming dynamic offered ...
  • Modeling of integrated erbium-doped waveguide amplifiers with overlapping factors methods 

    Vallés Brau, Juan Antonio; Lázaro Villa, José Antonio; Rebolledo Sanz, Miguel Ángel (1996-09)
    Article
    Accés restringit per política de l'editorial
    An analysis of the applicability of overlapping factors methods to the modeling of integrated erbium-doped waveguide amplifiers is presented. These methods offer as main advantage a considerable seduction in computation ...
  • Prospects of new planar optical waveguides based on eutectic microcomposites of insulating crystals: The ZrO 2 (c)-CaZrO 3 erbium doped system 

    Orera, Víctor M.; Peña Torre, José Ignacio; Merino Rubio, Rosa Isabel; Lázaro Villa, José Antonio; Vallés Brau, Juan Antonio; Rebolledo Sanz, Miguel Ángel (1997-11-10)
    Article
    Accés restringit per política de l'editorial
    A new approach to produce structured optical materials is described. The method relies on the capability of growing eutectic crystals of wide optical band gap materials by directional solidification procedures. The laser ...
  • Numerical simulation of bending effects in erbium-doped fibre amplifiers 

    Lázaro Villa, José Antonio; Rebolledo Sanz, Miguel Ángel (Institute of Physics (IOP), 1996-05)
    Article
    Accés restringit per política de l'editorial
    A numerical simulation of the effects caused by bends in erbium-doped fibres is presented. The perturbation of the gain and amplified spontaneous emission has been analysed with a model of the evolution of the pump, signal ...
  • Cost-effective DWDM ROADM design for flexible sustainable optical metro–access networks 

    Sarmiento Hernández, Samael; Altabas, Jose Antonio; Izquierdo, David; Garces, Ignacio; Spadaro, Salvatore; Lázaro Villa, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017-12)
    Article
    Accés obert
    Architectural changes are required for the underlying networks to support the expected Internet data traffic volume growth caused by the popularization of cloud services, 5G-based services, and social networks, to provide ...
  • 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; Gene Bernaus, Joan M.; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-01)
    Article
    Accés restringit per política de l'editorial
    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 ...
  • Non-orthogonal multiple access and carrierless amplitude phase modulation for flexible multi-user provisioning in 5G mobile networks 

    Altabás Navarro, José Antonio; Rommel, Simon; Puerta, Rafael; Izquierdo, David; Garces, Ignacio; Lázaro Villa, José Antonio; Vegas Olmos, Juan José; Tafur Monroy, Idelfonso (2017-10-07)
    Article
    Accés obert
    In this paper, a combined non-orthogonal multiple access (NOMA) and multiband carrierless amplitude phase modulation (multiCAP) scheme is proposed for capacity enhancement of and flexible resource provisioning in 5G mobile ...
  • Dedicated protection with signal overlap in elastic optical networks 

    Cugini, Filippo; Ruiz Ramírez, Marc; Foggi, Tommaso; Velasco Esteban, Luis Domingo; Sambo, Nicola; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-15)
    Article
    Accés restringit per política de l'editorial
    In optical dedicated path protection (1 1), the same optical signal is transmitted along both working and backup paths. Thus, in 1 1, the transmission parameters need to be configured according to the most impaired path, ...
  • Cognitive science applied to reduce network operation margins 

    Notivol Calleja, Luis David; Spadaro, Salvatore; Perelló Muntan, Jordi; Junyent Giralt, Gabriel (2017-06-08)
    Article
    Accés restringit per política de l'editorial
    In an increasingly competitive market environment with smaller product offer differentiation, a continuous maximization of efficiency, while guarantying the quality of the provided services, remains a main objective for ...
  • Cost-effective ROADM architecture for C/DWDM metro-access networks convergence 

    Sarmiento Hernández, Samael; Spadaro, Salvatore; Lázaro Villa, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The Internet data traffic constant growth caused by the popularization of cloud services, mobile and social networks is requiring changes at the underlying networks in order to enable scalability whereas supporting a highly ...
  • Dynamic virtual network connectivity for C-RAN backhauling 

    Asensio Garcia, Adrian; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Aiming at satisfying in a cost-effective manner the forecast traffic growth that future mobile networks will need to support, traditional distributed Radio Access Networks (RANs) are evolving towards centralized ...

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