Recent Submissions

  • Demonstration of continuous multiple access with image-rejection coherent receiver and DML transmitters 

    Tabares Giraldo, Jeison; Masanas Jiménez, Miquel; Cano Valadéz, Iván Nicolás; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Restricted access - publisher's policy
    We demonstrate a UD-WDM PON using DML transmitters with multilevel intensity modulation, both in base-band and RF, and a spectrally-efficient heterodyne receiver. We provide comparison with a homodyne receiver. Two users ...
  • Distributed and autonomous flow routing based on deep reinforcement learning 

    Barzegar, Sima; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    A DRL approach with a specific reward function is proposed for autonomous flow routing operating on multilayer scenarios. Illustrative results reveal that the DRL achieves optimal flow routing in terms of cost and service ...
  • Data plane technology-agnostic control and orchestration architecture for optical disaggregated data centers 

    Agraz Bujan, Fernando; Pagès Cruz, Albert; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Restricted access - publisher's policy
    We propose a novel SDN control and orchestration architecture to provide composed IaaS over optical disaggregated data centers. We experimentally validate intent-based mechanisms that make the architecture independent from ...
  • Single sideband techniques for next generation low-cost UD-WDM coherent PONs 

    Masanas Jiménez, Miquel; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Restricted access - publisher's policy
    Two applications for splitter-based, coherent passive optical networks are investigated. Coherent technologies enable ultra-dense wavelength division multiplexing, increasing the dedicated data rates per application, the ...
  • Quantum bit retransmission using universal quantum copying machine 

    Iqbal, Masab; Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc; Napoli, Antonio; Pedro, João; Costa, Nelson (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    Quantum internet, which is expected to be a combination of quantum and classical networks, promises to provide information-theoretic security for data exchange. Classical networks have well-established protocols for reliable ...
  • Dual time and frequency domain optical layer digital twin 

    Devigili, Mariano; Ruiz Ramírez, Marc; Costa, Nelson; Napoli, Antonio; Pedro, João; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    We demonstrate a digital twin for failure detection in optical networks. Artificial neural networks-based models for optical constellation analysis enable predicting the transmitted signal in the time domain whereas ...
  • Multi-agent-based dynamic optical subcarrier allocation for near real-time P2MP operation 

    Shakespear Miles, Hailey Josephine; Ruiz Ramírez, Marc; Napoli, Antonio; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    We propose a multi-agent system (MAS) to manage subcarrier allocation in point-to-multipoint connectivity based on Digital Subcarrier Multiplexing. Similar performance to a centralized approach is shown, which allows for ...
  • Designing a digital twin for quantum key distribution 

    Ahmadian, Seyed Morteza; Ruiz Ramírez, Marc; Berkay Ön, Mehmet; Singh, Sandeep Kumar; Comellas Colomé, Jaume; Proietti, Roberto; Yoo, Sung-Joo Ben; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    Classical optical devices lack precision when they operate on single photons. We report a Quantum Digital Twin (QDT) to improve Quantum Key Distribution (QKD) implementations. We show a QDT increasing the Key Exchange Rate ...
  • Dynamic subcarrier allocation for multipoint-to-point optical connectivity 

    Shakespear Miles, Hailey Josephine; Ruiz Ramírez, Marc; Napoli, Antonio; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
    Conference report
    Open Access
    A mathematical programming model is proposed to dynamically allocate subcarriers in the upstream direction of point-to-multipoint connections based on Digital Subcarrier Multiplexing. Numerical results show significant ...
  • An escape room for an alternative evaluation system 

    Farreras Esclusa, Montserrat; Bofill, Pau; Armengol Cebrian, Jesús; Asensio Garcia, Adrian (Universidade do Minho, 2022)
    Conference lecture
    Open Access
    Our traditional education system spins around evaluation and its traditional grading system: summative assessment. In that system, professors spend time and effort trying to be “fair” when they mark the exercises, while ...
  • 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 ...
  • 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. ...

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