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

  • Field-Trial of a high-budget, filterless, lambda-to-the-user, UDWDM-PON enabled by an innovative class of low-cost coherent transceivers 

    Presi, Marco; Artiglia, Massimo; Bottoni, Fabio; Cano Valadez, Iván Nicolás; Tabares Giraldo, Jeison; Velásquez Micolta, Juan Camilo; Ghasemi, Saeed; Polo Querol, Víctor; Chu Guang, Yong; Prat Gomà, Josep Joan (2017-09-01)
    Article
    Accés obert
    We experimentally demonstrate an innovative ultradense wavelength division multiplexing (UDWDM) passive optical networks (PON) that implements the full ¿-to-the-user concept in a filterless distribution network. Key element ...
  • 15-dB differential link-loss UDWDM-PON with direct beat phase modulated DFBs 

    Velásquez Micolta, Juan Camilo; Cano Valadez, Iván Nicolás; Polo Querol, Víctor; Domingo Ribé, Marc; Prat Gomà, Josep Joan (2017-11-21)
    Article
    Accés obert
    IEEE A 15 dB differential link-loss ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON) with two optical network units (ONU) spectrally spaced 6.25 GHz is experimentally implemented and tested. ...
  • Flexible coherent UDWDM-PON adapting dynamically to different bandwidths 

    Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Prat Gomà, Josep Joan; Kazovsky, Leonid (2017)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Ultra-Dense Wavelength Division Multiplexing (UDWDM) is a candidate for future Passive Optical Networks (PONs) to sustain the increase of access traffic, providing enhanced capacity with point-to-point logical connections ...
  • An architecture to support autonomic slice networking 

    Velasco Esteban, Luis Domingo; Gifre, Lluís; Izquierdo Zaragoza, José Luis; Paolucci, Francesco; Vela, Alba P.; Sgambelluri, Andrea; Ruiz Ramírez, Marc; Cugini, Filippo (2017-09-01)
    Article
    Accés obert
    IEEE Network slices combine resource virtualization with the isolation level required by future 5G applications. In addition, the use of monitoring and data analytics help to maintain the required network performance, while ...
  • Meeting the requirements to deploy cloud RAN over optical networks 

    Velasco Esteban, Luis Domingo; Castro Casales, Alberto; Asensio Garcia, Adrian; Ruiz Ramírez, Marc; Liu, G.; Qin, C.; Proietti, Roberto; Yoo, Sung-Joo Ben (Optical Society of America, 2017-03-01)
    Article
    Accés obert
    Radio access network (RAN) cost savings are expected in future cloud RAN (C-RAN). In contrast to traditional distributed RAN architectures, in C-RAN, remote radio heads (RRHs) from different sites can share baseband ...
  • Dimensioning OLT architectures for UDWDM-PONs employing coherent transceivers 

    Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Ultra-Dense Wavelength Division Multiplexing (UDWDM) is a new method for access PON, introducing the wavelength-to-the-user concept. The main technology will be a cost-effective coherent detection scheme providing low-cost ...
  • Using static connections to improve elastic optical networks performance 

    Comellas Colomé, Jaume; Vicario, L.; Junyent Giralt, Gabriel (Optical Society of American (OSA), 2017)
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    Accés restringit per política de l'editorial
    Network resources are poorly used in Elastic Optical Networks under dynamic traffic conditions. A hybrid scheme where some resources are statically allocated and the remaining ones are devoted to dynamic traffic, is proposed ...
  • An improved dynamic wavelength assignment in statistical UDWDM-PONs 

    Sales Zaragoza, Vicente; Segarra Mullerat, Josep; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Dynamic wavelength assignment (DWA) is investigated for managing ultra-dense wavelength division multiplexing-passive optical networks (UDWDM-PONs). The optical network units (ONUs) own lasers under limited thermal tunability ...
  • Experimental assessment of big data-backed video distribution in the telecom cloud 

    Gifre, Lluis; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    The telecom infrastructure is undergoing a huge transformation since operators are deploying their own cloud infrastructure to provide cloud services and enabling Network Functions Virtualization (NFV). The resulting ...
  • Adapting the virtual network topology to near future traffic 

    Morales Alcaide, Fernando; Festa, Paola; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    The introduction of new services requiring large and dynamic bitrate connectivity can cause changes in the direction of the traffic in metro and even core network segments along the day. This leads to large overprovisioning ...
  • Data analytics based origin-destination core traffic modelling 

    Morales Alcaide, Fernando; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    Traffic monitoring is an essential task for network operators since it allows evaluating network performance. Monitoring data from origin-destination (OD) traffic in core virtual network topologies can be collected from ...
  • Combining machine learning and optimization for early pre-FEC BER degradation to meet committed QoS 

    Pérez Vela, Alba; Ruiz Ramírez, Marc; Cugini, Filippo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    Accés restringit per política de l'editorial
    Monitoring the physical layer is key to detect bit error rate (BER) degradation caused by failures and to identify the cause of the failure and localize the failed elements. Once the failure has been detected, actions can ...

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