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

  • Dynamic and efficient point-to-point and point-to-multipoint communications by slicing the optical constellation 

    Iqbal, Masab; Ruiz Ramírez, Marc; Costa, Nelson; Napoli, Antonio; Pedro, João; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference lecture
    Open Access
    Optical Constellation Slicing is proposed to convey heterogenous traffic from a source to multiple destinations, while supporting dynamic capacity allocation. Illustrative numerical results reveal the potential of the ...
  • LPsec: a fast and secure cryptographic system for optical connections 

    Iqbal, Masab; Velasco Esteban, Luis Domingo; Costa, Nelson; Napoli, Antonio; Pedro, João; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2022-04)
    Article
    Open Access
    High capacity and low latency of optical connections are ideal for supporting current and future communication services, including 5G and beyond. Although some of those services are already secured at the packet layer using ...
  • Deep learning-based real-time analysis of lightpath optical constellations [Invited] 

    Ruiz Ramírez, Marc; Sequeira, Diogo Gonçalo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022-06-01)
    Article
    Restricted access - publisher's policy
    Optical network automation requires accurate physical layer models, not only for provisioning but also for real-time analysis. In particular, In-Phase (I) and Quadrature (Q) constellation analysis enables deep understanding ...
  • Experimental demonstration of SDN-enabled reconfigurable disaggregated data center infrastructure 

    Guo, Xiaotao; Agraz Bujan, Fernando; Xue, Xuwei; Pan, Bitao; Pagès Cruz, Albert; Zhang, Shaojuan; Exarchakos, Georgios; Spadaro, Salvatore; Calabretta, Nicola (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Restricted access - publisher's policy
    A 4-node prototype of SDN-controlled disaggregated data-center network is experimentally demonstrated based on the nanoseconds optical switch, enabling flexible hardware resource provisioning and dynamic resource reallocation. ...
  • Desarrollo de un entorno de simulación para el aprendizaje de un algoritmo de navegación autónoma de un velero de 2 metros de eslora 

    Chacón Mosquera, Esteban; Mesegué Basallo, Josep Eudald; Fernández Canti, Rosa M.; Lázaro Villa, José Antonio (Universidade da Coruña. Servizo de Publicacións, 2021)
    Conference lecture
    Open Access
    Se presenta el desarrollo de un entorno virtual de simulación basado en Python Turtle para el entrenamiento de un algoritmo de aprendizaje por refuerzo destinado a la navegación autónoma de un velero de 2 metros de eslora. ...
  • Autonomous resource assignment for optimal utilization in optical data centre infrastructures 

    Pagès Cruz, Albert; Biosca Caro, Jordi; Agraz Bujan, Fernando; Spadaro, Salvatore (Optica Publishing Group, 2021)
    Conference report
    Restricted access - publisher's policy
    We present an architectural solution based on data analytics for self-organizing optical data centers. Thanks to a reinforcement learning-based cognitive layer, an adaptive and autonomous resource assignment to deployed ...
  • A latency-aware real-time video surveillance demo: network slicing for improving public safety 

    Shariati, Mohammad Behnam; Pedreno Manresa, José Juan; Dochhan, Annika; Siddique Muqaddas, Abubakar; Casellas Regi, Ramon; González de Dios, Oscar; Luque Canto, L.; Lent, Bodo; López de Vergara Méndez, Jorge Enrique; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    We report the automated deployment of 5G services across a latency-aware, semi- disaggregated, and virtualized metro network. We summarize the key findings in a detailed analysis of end-to-end latency, service setup time, ...
  • Demonstration of latency-aware 5G network slicing on optical metro networks 

    Shariati, Mohammad Behnam; Velasco Esteban, Luis Domingo; Pedreno Manresa, José Juan; Dochhan, Annika; Casellas Regi, Ramon; Siddique Muqaddas, Abubakar; González de Dios, Oscar; Luque Canto, L.; Lent, Bodo; Ruiz Ramírez, Marc (Optical Society of American (OSA), 2022-01-01)
    Article
    Restricted access - publisher's policy
    The H2020 METRO-HAUL European project has architected a latency-aware, cost-effective, agile, and programmable optical metro network. This includes the design of semi-disaggregated metro nodes with compute and storage ...
  • End-to-end intent-based networking 

    Velasco Esteban, Luis Domingo; Signorelli, Marco; González de Dios, Oscar; Papagianni, Chrysa; Bifulco, Roberto; Vegas Olmos, Juan J.; Pryor, Simon; Carrozzo, Gino; Schulz-Zander, Julius; Bennis, Mehdi; Martínez, Ricardo; Cugini, Filippo; Salvadori, Claudio; Lefebvre, Vincent; Valcarenghi, Luca; Ruiz Ramírez, Marc (2021-10)
    Article
    Open Access
    To reap its full benefits, 5G must evolve into a scalable decentralized architecture by exploiting intelligence ubiquitously and securely across different technologies, network layers, and segments. In this article, we ...
  • Lightweight optical constellation modeling by concatenating artificial neural networks 

    Sequeira, Diogo Gonçalo; Ruiz Ramírez, Marc; Costa, Nelson; Napoli, Antonio; Pedro, João; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    A lightweight optical constellations modeling method based on concatenating ANNs is proposed. Statistical validation of the reproduced constellations is shown. The method accelerates data generation and facilitates detecting ...
  • An autoencoder-based solution for IQ constellation analysis 

    Ruiz Ramírez, Marc; Morales López, Javier; Sequeira, Diogo Gonçalo; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    A method for IQ constellation analysis based on Autoencoders is proposed. Exhaustive numerical results show accurate physical metric prediction and large data compression, while providing useful model explainability.
  • Intent-based networking and its application to optical networks [invited tutorial] 

    Velasco Esteban, Luis Domingo; Barzegar, Sima; Tabatabaeimehr, Fatemehsadat; Ruiz Ramírez, Marc (2022-01-01)
    Article
    Restricted access - publisher's policy
    The intent-based networking (IBN) paradigm targets defining high-level abstractions so network operators can define what their desired outcomes are without specifying how they would be achieved. The latter can be achieved ...

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