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

  • Provisioning of time-sensitive and non-time-sensitive flows with assured performance 

    Velasco Esteban, Luis Domingo; Graziadei, Gianluca; Barzegar, Sima; Ruiz Ramírez, Marc (2025-02-07)
    Article
    Open Access
    Time-Sensitive Networking (TSN) standards provide scheduling and traffic shaping mechanisms to ensure the coexistence of Time-Sensitive (TS) and non-TS traffic classes on the same network infrastructure. Nonetheless, much ...

  • Phase noise reduction in continuous-variable quantum key distribution using digital filtering 

    Sarmiento, Samael; Llanos Pla, Elisabeth; Adillon Albero, Pol; Tabares Giraldo, Jeison; Lázaro Villa, José Antonio; Etcheverry, Sebastian (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Restricted access - publisher's policy
    Quantum key distribution (QKD) enables information-theoretic-secure secret key exchange thanks to the laws of quantum mechanics. Since it can easily be incorporated into existing telecom networks, continuous-variable QKD ...

  • Privacy preserving digital twin knowledge sharing for multi-domain networks 

    Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    Knowledge sharing techniques among OCATA optical layer digital twin instances are proposed for multi-domain scenarios. Intra-domain model transformations are performed to guarantee privacy of intra-domain topology. Remarkable ...

  • Adaptive provisioning of time-varying traffic in translucent SDM elastic optical networks 

    Wlodarczyk, Adam; Knapinska, Aleksandra; Lechowicz, Piotr; Spadaro, Salvatore; Walkowiak, Krzysztof (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Restricted access - publisher's policy
    In this paper, we concentrate on resource allocation of time-varying traffic in translucent space-division multiplexing (SDM) elastic optical networks (EON) with back-to-back (B2B) signal regeneration. The performance is ...

  • Experimental assessment of photonic down-conversion techniques for analog new-radio upstream 

    Masanas Jiménez, Miquel; Tomás Belenguer, María Santos; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Restricted access - publisher's policy
    This paper explores the feasibility of Intermediate Frequency (IF) detection from a directly modulated Radio Frequency (RF) optical signal. We propose a method involving optical series re-modulation of an RF over Fiber ...

  • The role of the TSN controller in E2E deterministic services provisioning 

    Spadaro, Salvatore; Agraz Bujan, Fernando; Pagès Cruz, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Restricted access - publisher's policy
    The provisioning of deterministic services over E2E multi-technological infrastructures requires the proper configuration of the resources to match the required Key Performance Indicators (KPI), such as latency and jitter. ...

  • Towards zero-touch optical multiband networking with the OCATA optical time domain digital twin 

    Khare, Prasunika; Ghasrizadeh Dezfouli, Mohammad Sadegh; Devigili, Mariano; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    Optical in-phase and quadrature (IQ) constellations enclose valuable information regarding the optical elements traversed by the optical signal. Such information can be extracted and exploited by algorithms and models ...

  • Deployment of multi-agent system pipelines for near-real-time operation of 6G network services 

    González Pacheco, Pol; Barzegar, Sima; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    A Machine Learning Function Orchestrator deploying and reconfiguring Multi-Agent Systems (MAS) pipelines to support near-real-time control of network services is showcased. An architecture to orchestrate the dynamic ...

  • Provisioning of time-sensitive and non-time-sensitive flows on a common infrastructure 

    Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    Provisioning Time-Sensitive (TS) flows on dedicated infrastructures requires just calculating the time-slot dedicated to that service, which is then allocated in the superframes used by the schedulers running in the different ...

  • Autonomous flow routing based on deep reinforcement learning 

    Barzegar, Sima; Shakespear Miles, Hailey Josephine; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    The progression of 5G and beyond brings forth a demand for dynamic services and with it many service requirements, prompting the need for adaptable and automated solutions. Existing autonomous network operations, reliant ...

  • Deployment of genuine multi-agent pipelines for near-real-time control of 6G network services 

    González Pacheco, Pol; Angoustures, Mark; Zahir Rodríguez, Adam; Barzegar, Sima; Ruiz Ramírez, Marc; Groshev, Milan; Lefebvre, Vincent; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Conference report
    Open Access
    The near real-time control of 6 G network services requires decision-making to be placed as close to network devices as possible. A possible solution is to deploy a distributed system with intelligent agents that relieves ...

  • Flexible bandwidth-efficient simplified coherent IFoF using twin-OSSB with a dually modulated EML 

    Masanas Jiménez, Miquel; Prat Gomà, Josep Joan (2024-09-04)
    Article
    Open Access
    A bandwidth-efficient coherent analog IFoF approach is proposed, employing a twin optical sideband (twin-OSSB) modulation of intermediate frequency-over-fiber (IFoF) signals in a dually modulated electroabsorption modulated ...

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