GCO - Grup de Comunicacions Òptiques

 

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

  • Extending the OCATA digital twin for optical connections based on digital subcarrier multiplexing 

    Devigili, Mariano; Sequeira, Diogo Gonçalo; Ruiz Ramírez, Marc; Costa, Nelson; Castro, Carlos; Napoli, Antonio; Pedro, João; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    Time-domain digital twin models for single carrier and DSCM signals are developed that propagate features to estimate the impact of filter penalties on the BER. Results show remarkable accuracy, which is used for lightpath ...

  • Centralized and distributed approaches to control optical point-to-multipoint systems near-real-time 

    Shakespear Miles, Hailey Josephine; Lin, Q.; Barzegar, Sima; Ruiz Ramírez, Marc; Chen, X.; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers, 2024-05-01)
    Article
    Open Access
    Optical point-to-multipoint (P2MP) connectivity based on digital subcarrier multiplexing (DSCM) has been shown as a solution for the metro-access segment that is able to reduce capital and operational costs and support the ...

  • Using convolutional neural networks for blocking prediction in elastic optical networks 

    Nourmohammadi, Farzaneh; Parmar, Chetan; Wings, Elmar; Comellas Colomé, Jaume (Multidisciplinary Digital Publishing Institute, 2024-02-28)
    Article
    Open Access
    This paper presents a study on connection-blocking prediction in Elastic Optical Networks (EONs) using Convolutional Neural Networks (CNNs). In EONs, connections are established and torn down dynamically to fulfill the ...

  • Control and orchestration solutions for end-to-end time sensitive services in future 6G networks 

    Spadaro, Salvatore; Agraz Bujan, Fernando; Pagès Cruz, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference lecture
    Restricted access - publisher's policy
    The provisioning of time sensitive end-to-end services in future 6G networks imposes multiple technical challenges, spanning from the data plane to the control and orchestration planes. In particular, the automation of the ...

  • SDN-based band-adaptive quality assurance scheme in support of heterogenous B5G services over sliceable multi-band optical networks 

    Pagès Cruz, Albert; Agraz Bujan, Fernando; Spadaro, Salvatore (2023-02)
    Article
    Restricted access - publisher's policy
    The rise of traffic intensive services and applications is pushing the limits of conventional single band Wavelength Division Multiplexing (WDM) optical networks. As an answer to this challenge, new data plane technologies ...

  • On the benefits of optical disaggregated datacentre infrastructures for machine learning applications 

    Pagès Cruz, Albert; Agraz Bujan, Fernando; Spadaro, Salvatore (The Institution of Engineering and Technology (IET), 2023)
    Conference lecture
    Open Access
    ML applications present time varying requirements that should be accounted for an optimized deployment. We evaluate the benefits of disaggregated DC infrastructures for supporting them and propose a dynamic re-orchestration ...

  • Machine learning-based actuation orchestration for inter-/intra-data center networks 

    Spadaro, Salvatore; Pagès Cruz, Albert; Agraz Bujan, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Restricted access - publisher's policy
    Datacenter (DC) infrastructures are essential to support the requirements posed by nowadays digital society and emerging industrial trends. In such context, a proper actuation management has become especially relevant for ...

  • Context-based e2e autonomous operation in B5G networks 

    Wang, Shaoxuan; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Multidisciplinary Digital Publishing Institute (MDPI), 2024-03-01)
    Article
    Open Access
    The research and innovation related to fifth-generation (5G) networks that has been carried out in recent years has decided on the fundamentals of the smart slice in radio access networks (RANs), as well as the autonomous ...

  • Low-cost all-optical switching nodes for ultra-dense optical metro-access networks 

    Sarmiento Hernández, Samael; Lázaro Villa, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Open Access
    Optical metro-access networks (OMANs) must enable the connectivity among 5G-based radio stations, edge datacentres, businesses, and home users. In such a heterogenous scenario, greater scalability, higher levels of dynamic ...

  • Optimal design of cost-effective OXC and ROADM nodes to maximize the throughput of mesh-based u-DWDM metro-access networks 

    Sarmiento Hernández, Samael; Pagès Cruz, Albert; Spadaro, Salvatore; Lázaro Villa, José Antonio (Springer, 2023-06-22)
    Article
    Open Access
    Metro-access networks will play a primary role in future network fabrics, enabling connectivity among different actors such as 5G-based radio stations, edge datacenters, businesses, and home users. To provide such heterogeneous ...

  • Evaluating scalability, resiliency, and load balancing in software-defined networking 

    Barbecho Bautista, Pablo; Comellas Colomé, Jaume; Urquiza Aguiar, Luis Felipe (Multidisciplinary Digital Publishing Institute (MDPI), 2023-12-04)
    Article
    Open Access
    With emerging technologies like cloud computing and big data, managing traditional networks has become more demanding. Software-defined networking (SDN) promises faster implementation, flexibility, and simplified network ...

  • DARIUS: a digital twin to improve the performance of quantum key distribution 

    Ahmadian, Seyed Morteza; Ruiz Ramírez, Marc; Comellas Colomé, Jaume; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024-03-01)
    Article
    Open Access
    Polarization encoded Quantum Key Distribution (QKD) is attracting great attention as it generates unlimitedly and unconditionally secure keys for different use cases. Despite its theoretical excellence based on quantum ...

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