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

Recent Submissions

  • Flexible coherent UDWDM-PON with dynamic user allocation based on limited-tunability lasers 

    Segarra Mullerat, Josep; Sales Zaragozá, Vicente; Polo Querol, Víctor; Tabares Giraldo, Jeison; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-01)
    Article
    Restricted access - publisher's policy
    Coherent wavelength division multiplexing (WDM) technologies have leveraged the optical communication systems in core networks, increasing the fiber capacity by transmission with advanced modulation formats and mitigation ...
  • Practical design of a coherent ultra-dense WDM-PON with paired DFB lasers 

    Segarra Mullerat, Josep; Sales Zaragozá, Vicente; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Restricted access - publisher's policy
    A coherent WDM-PON achieving ultra-dense spectral allocation is reported. The ONU at user premises is built of coherent transceivers with two paired low-cost DFB lasers, one as local oscillator and the other as transmitter, ...
  • Spatial partitioning for proactive spectrum fragmentation avoidance in flex-grid/SDM dynamic optical core networks 

    Comellas Colomé, Jaume; Perelló Muntan, Jordi; Solé Pareta, Josep; Junyent Giralt, Gabriel (2020-10)
    Article
    Restricted access - publisher's policy
    Spectrum fragmentation has always been a major issue to overcome toward spectrally efficient Flex-Grid over Single-Mode Fiber dynamic optical networks and continues like so when evolving to Flex-Grid over Spatial Division ...
  • Cooperative learning for end-to-end delay modeling in multi-domain networks [Dataset] 

    Ruiz Ramírez, Marc; Velasco Esteban, Luis (Universitat Politècnica de Catalunya, 2020)
    Dataset
    Open Access
  • Resource allocation and interference management techniques for OFDM-based VLC atto-cells 

    Ibrahim Mohamed Badr, Asmaa; Ismail, Tawfik; Elsayed, Khaled F.; Darweesh, Mohamed Saeed; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2020-07-13)
    Article
    Open Access
    In this paper, a resource partitioning scheme combined with a new multi-carrier optical modulation technique for indoor visible light communication (VLC) system is proposed. In VLC systems, the coverage area is divided ...
  • Modeling and assessing connectivity services performance in a sandbox domain 

    Ruiz Ramírez, Marc; Ruiz Noguera, Mario; Tabatabaeimehr, Fatemehsadat; Gifré Renom, Lluís; López-Buedo, Sergio; López de Vergara Méndez, Jorge E.; González de Dios, Oscar; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-15)
    Article
    Open Access
    The automation of Network Services (NS) consisting of virtual functions connected through a multilayer packet-over-optical network requires predictable Quality of Service (QoS) performance, measured in terms of throughput ...
  • Mixed integration of CDIO skills into telecommunication engineering curricula 

    Sayrol Clols, Elisa; Bragós Bardia, Ramon; Alarcón Cot, Eduardo José; Cabrera-Bean, Margarita; Calveras Augé, Anna M.; Comellas Colomé, Jaume; O'Callaghan Castellà, Juan Manuel; Pegueroles Vallés, Josep R.; Pla, Enrique; Prat Viñas, Lluís; Sáez Moreno, Germán; Sardà Ferrer, Joan; Tallon Montoro, Carme (2010)
    Article
    Open Access
    Spain has been intensively involved in designing engineering curricula for the last two years and next academic year all engineering schools will be deploying all bachelor programs adapted to the EHEA and to the Spanish ...
  • Dual polarization full-field signal waveform reconstruction using intensity only measurements for coherent communications 

    Chen, Haoshuo; Fontaine, Nicolas K.; Gené Bernaus, Joan M.; Ryf, Roland; Neilson, David T.; Raybon, Gregory (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-01)
    Article
    Open Access
    Conventional optical coherent receivers capture the full electrical field, including amplitude and phase, of a signal waveform by measuring its interference against a stable continuous-wave local oscillator (LO). In optical ...
  • Demonstration of monitoring and data analytics-triggered reconfiguration in partially disaggregated optical networks 

    Gifré Renom, Lluís; Boitier, Fabien; Delezoide, Camille; Ruiz Ramírez, Marc; Buffa, Marta; Morea, Annalisa; Casellas Regi, Ramon; Velasco Esteban, Luis Domingo; Layec, Patricia (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    We demonstrate a novel agent for optical disaggregated optical networks. When the Monitoring and Data Analytics detects a degradation, it recommends the SDN controller to trigger a network reconfiguration computed by a ...
  • Monitoring and data analytics-triggered reconfiguration in partially disaggregated optical networks 

    Gifré Renom, Lluís; Boitier, Fabien; Delezoide, Camille; Ruiz Ramírez, Marc; Buffa, Marta; Morea, Annalisa; Casellas Regi, Ramon; Velasco Esteban, Luis Domingo; Layec, Patricia (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    We present ADONIS, which stands for Aggregator/Disaggregator for Optical Network equIpmentS, a novel open device agent able to construct logical network devices from (dis)aggregation of physical components in order to ...
  • Predictive autonomic transmission for low-cost low-margin metro optical networks 

    Ruiz Ramírez, Marc; Boitier, Fabien; Shariati, Mohammad Behnam; Layec, Patricia; Velasco Esteban, Luis Domingo (2020-10)
    Article
    Restricted access - publisher's policy
    Low-cost low-margin implementation plays an essential role in upgrading optical metro networks required for future 5G ecosystem. In this regard, low-resolution analog-to-digital converters can be used in coherent optical ...
  • Optical network automation [Invited tutorial] 

    Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference lecture
    Open Access
    Increased levels of automation will be necessary in view of more stringent performance requirements that next generation optical transport networks need to support in a near term, not only for high capacity, but, even more ...

View more