Now showing items 1-9 of 9

  • BER degradation detection and failure identification in elastic optical networks 

    Vela, Alba P.; Ruiz Ramírez, Marc; Fresi, Francesco; Sambo, Nicola; Cugini, Filippo; Meloni, Gianluca; Poti, Luca; Velasco Esteban, Luis Domingo; Castoldi, Piero (2017-08-30)
    Article
    Open Access
    IEEE Optical connections support virtual links in MPLS-over-optical multilayer networks and therefore, errors in the optical layer impact on the quality of the services deployed on such networks. Monitoring the performance ...
  • Dedicated protection with signal overlap in elastic optical networks 

    Cugini, Filippo; Ruiz Ramírez, Marc; Foggi, Tommaso; Velasco Esteban, Luis Domingo; Sambo, Nicola; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-15)
    Article
    Restricted access - publisher's policy
    In optical dedicated path protection (1 1), the same optical signal is transmitted along both working and backup paths. Thus, in 1 1, the transmission parameters need to be configured according to the most impaired path, ...
  • Early pre-FEC BER degradation detection to meet committed QoS 

    Pérez Vela, Alba; Ruiz Ramírez, Marc; Fresi, Francesco; Sambo, Nicola; Cugini, Filippo; Velasco Esteban, Luis Domingo; Castoldi, Piero (Optical Society of American (OSA), 2017)
    Conference report
    Restricted access - publisher's policy
    Early optical layer BER degradation detection is proposed to trigger affected demands re-routing, targeting at reducing SLA violation. Results show that the proposed detection and re-routing algorithms noticeably reduce ...
  • Filter optimization in SDN-based flexgrid networks 

    Paolucci, Francesco; Fresi, Francesco; Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Cugini, Filippo; Sambo, Nicola; Giorgetti, Alessio; Poti, Luca; Castoldi, Piero (Optical Society of American (OSA), 2014)
    Conference report
    Restricted access - publisher's policy
    The novel super-filter technique for flexgrid optical networks is proposed to compact spectrum-contiguous lightpaths. The technique is applied in a specifically extended SDN architecture, showing significant gains in terms ...
  • Fully disaggregated ROADM white box with NETCONF/YANG control, telemetry, and machine learning-based monitoring 

    Sgambelluri, Andrea; Izquierdo Zaragoza, José Luis; Giorgetti, Alessio; Gifre Renom, Lluís; Velasco Esteban, Luis Domingo; Paolucci, Francesco; Sambo, Nicola; Fresi, Francesco; Castoldi, Piero; Morro, Roberto; Riccardi, Emilio; D'Errico, Alessio; Cugini, Filippo (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    A first demonstration of ROADM White Box augmented with machine learning capabilities is demonstrated. The white box includes various level of disaggregation, NETCONF/YANG control, telemetry and spectrum-based advanced ...
  • Impact of multi-wavelength sliceable transponders in elastic optical networks 

    Dallaglio, Mateo; Giorgetti, Alessio; Sambo, Nicola; Velasco Esteban, Luis Domingo; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    The utilization of sliceable bandwidth variable transponders based on multi-wavelength technology is evaluated in EONs. A routing and spectrum assignment scheme is proposed specifically designed to consider the constraints ...
  • Routing, spectrum, and transponder assignment in elastic optical networks 

    Dallaglio, Mateo; Giorgetti, Alessio; Sambo, Nicola; Velasco Esteban, Luis Domingo; Castoldi, Piero (2015)
    Article
    Open Access
    Backbone networks are evolving toward Elastic Optical Network (EON) architecture that allows a flexible and efficient use of spectrum resources. Flexibility in EONs is guaranteed also by emerging sliceable bandwidth variable ...
  • Signal overlap for efficient 1+1 protection in elastic optical networks (EONs) 

    Cugini, Filippo; Sambo, Nicola; Foggi, Tomasso; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo; Castoldi, Piero (Optical Society of American (OSA), 2017)
    Conference report
    Restricted access - publisher's policy
    An innovative transmission technique enabling signal overlap is introduced for spectrally-efficient 1+1 protection. Simulation results show that the proposed technique successfully reduces the overall amount of occupied ...
  • Superfilter technique in SDN-controlled elastic optical networks 

    Paolucci, Francesco; Cugini, Filippo; Fresi, Francesco; Meloni, Gianluca; Giorgetti, Alessio; Sambo, Nicola; Poti, Luca; Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Castoldi, Piero (Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
    Article
    Restricted access - publisher's policy
    In flexigrid elastic optical networks, filtering cascade effects strongly affect the overall transmission performance. To avoid these detrimental impairments, each lightpath is typically configured, in an independent way, ...