Browsing by Author "Fresi, Francesco"
Now showing items 1-11 of 11
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Active PCE demonstration performing elastic operations and hitless defragmentation in flexible grid optical networks
(2015-02-01)
Article
Restricted access - publisher's policy -
BER degradation detection and failure identification in elastic optical networks
(2017-08-30)
Article
Open AccessIEEE 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 ... -
Building autonomic optical whitebox-based networks
(Institute of Electrical and Electronics Engineers (IEEE), 2018-08-01)
Article
Open AccessDisaggregation at the optical layer is expected to bring benefits to network operators by enriching the offering of available solutions and enabling the deployment of optical nodes that better fit their needs. In this ... -
Early pre-FEC BER degradation detection to meet committed QoS
(Optical Society of American (OSA), 2017)
Conference report
Restricted access - publisher's policyEarly 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 ... -
Experimental demonstration of an active stateful PCE performing elastic operations and hitless defragmentation
(2013)
Conference report
Restricted access - publisher's policyAn experimental demonstration of active stateful PCE for flexgrid networks is presented. The PCE enables elastic operations on established connections and, when required, performs hitless defragmentation of spectrum ... -
Experimental demonstration of multi-vendor and multi-domain elastic optical network with data and control interoperability over a pan-european test-bed
(2016-04-01)
Article
Open AccessThe operation of multidomain and multivendor EONs can be achieved by interoperable sliceable bandwidth variable transponders (S-BVTs), a GMPLS/BGP-LS-based control plane, and a planning tool. The control plane is extended ... -
Filter optimization in SDN-based flexgrid networks
(Optical Society of American (OSA), 2014)
Conference report
Restricted access - publisher's policyThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyA 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 ... -
Optical signal tracking for robust PAM4 deployment in filterless metro network scenarios
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessHighly accurate and reliable optical signal tracking is proposed that estimates sub-GHz laser drift failures by analyzing spectra acquired by cost-effective coarse-granular OSAs. Its application on PAM4 systems in filterless ... -
Real-time optical spectrum monitoring in filterless optical metro networks
(2020-06-17)
Article
Open AccessFilterless optical networks (FONs) have been proposed as a feasible solution for optical metro networks. In addition, as a result of the shorter distance compared to core optical networks, direct detection optical transmission ... -
Superfilter technique in SDN-controlled elastic optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
Article
Restricted access - publisher's policyIn 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, ...
