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

  • Experimental assessment of 10 Gbps 5G multicarrier waveforms for high-layer split U-DWDM-PON-based fronthaul 

    Sarmiento Hernández, Samael; Altabas, Jose Antonio; Spadaro, Salvatore; Lázaro Villa, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2019-05-15)
    Article
    Open Access
    The current constant growth in mobile networks' traffic demands caused by the popularization of cloud and streaming services on personal devices, requires architectural changes so as to fulfill all new 5G mobile network ...
  • Orchestrating virtual slices in data centre infrastructures with optical DCN 

    Pagès Cruz, Albert; Agraz Bujan, Fernando; Montero Herrera, Rafael; Landi, Giada; Capitani, Marco; Gallico, Domenico; Biancani, Matteo; Nejabati, Reza; Simeonidou, Dimitra; Spadaro, Salvatore (2019-07-01)
    Article
    Restricted access - publisher's policy
    The emergence of new paradigms and services is pushing the limits of nowadays cloud infrastructures. It is a fact that current solutions lack in the flexibility and configurability to adapt to heterogeneous requirements ...
  • Enable advanced QoS-aware network slicing in 5G networks for slice-based media use cases 

    Wang, Qi; Alcaraz Calero, Jose; Ricart Sánchez, Rubén; Barros Weiss, Maria; Spadaro, Salvatore (2019-01-01)
    Article
    Open Access
    Media use cases for emergency services require mission-critical levels of reliability for the delivery of media-rich services, such as video streaming. With the upcoming deployment of the fifth generation (5G) networks, a ...
  • Supporting QoE/QoS-aware end-to-end network slicing in future 5G-enabled optical networks 

    Montero, Rafael; Pagès Cruz, Albert; Agraz Bujan, Fernando; Spadaro, Salvatore (2019)
    Conference report
    Restricted access - publisher's policy
    Network slicing with Quality of Experience/Quality of Service (QoE/QoS) guarantees is seen as one of the key enablers of future 5G networks. Nevertheless, it poses several challenges in both resource provisioning and ...
  • Versatile metro-access network integrating FTTH, enterprises, IoT and 5G services 

    Segarra Mullerat, Josep; Sales Zaragozá, Vicente; Prat Gomà, Josep Joan (2019)
    Conference report
    Restricted access - publisher's policy
    Bandwidth demands are increasing with a high dynamic shape, driven by high definition video, cloudcomputing, business services, Internet of Things (IoT) and emerging next generation mobile networks like 5G. To support this ...
  • A universal specification for multicore fiber crosstalk 

    Gené Bernaus, Joan M.; Winzer, Peter J. (2019-05-01)
    Article
    Open Access
    In order to transition multi-core fiber (MCF) technologies from their research state to volume production, the key design specifications have to be broadly agreed upon, first and foremost an acceptable level of inter-core ...
  • Out-of-field generic ML training with in-field specific adaptation to facilitate ML deployments 

    Shariati, Mohammad Behnam; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    A two-phase strategy to facilitate ML algorithm deployment in real networks is demonstrated: out-of-field training uses data from simulation and testbed experiments with generic equipment whereas in-field adaptation is ...
  • Optical signal tracking for robust PAM4 deployment in filterless metro network scenarios 

    Shariati, Mohammad Behnam; Fresi, Francesco; Ruiz Ramírez, Marc; Cugini, Filippo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Highly accurate and reliable optical signal tracking is proposed that estimates sub-GHz laser drift failures by analyzing spectra acquired by cost-effective coarse-granular OSAs. Its application on PAM4 systems in filterless ...
  • Self-learning approaches for real optical networks 

    Ruiz Ramírez, Marc; Boitier, Fabien; Layec, Patricia; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Self-learning approaches to facilitate the deployment of ML algorithms in real networks are analyzed and their performance evaluated through an illustrative use case. Results show large benefits of collective self-learning ...
  • Fault management based on machine learning 

    Velasco Esteban, Luis Domingo; Rafique, Danish (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Machine Learning (ML) brings many benefits for network operation. In this paper, basic ML concepts and its integration into existing network control and management planes are reviewed. Case studies covering fault management ...
  • Large eddy simulation and laboratory experiments on the decay of grid wakes in strongly stratified flows 

    Fraunie, P.; Chashechkin, Y.; Redondo Apraiz, José Manuel; Velasco Montes, David; Rayo Berreba, S. (2009-07-27)
    Article
    Open Access
    A detailed analysis of the flow structure resulting from the combination of turbulence and internal waves is carried out and visualized by means of the Schlieren method on waves in a strongly stratified fluid at the ...
  • Autonomic NFV network services on top of disaggregated optical metro networks 

    Esmenats, P. R.; Casellas Regi, Ramon; Gifre Renom, Lluís; Pérez Vela, Alba; Ruiz Ramírez, Marc; Martínez, Ricardo; Velasco Esteban, Luis Domingo (2019)
    Conference report
    Restricted access - publisher's policy
    Control and orchestration of metro network to support dynamic provisioning and reconfiguration of services based on Virtual Network Functions are demonstrated through a CDN example. Interaction among CASTOR MDA, OSM and ...

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