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Time interleaved DPSK/ASK transmitter with directly beat modulated DFB for coherent WDM-PON
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
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We experimentally demonstrate a novel low-cost 2.5 Gb/s/¿ transmitter based on a directly modulated DFB laser featuring DPSK/ASK interleaved in time. Rx sensitivity of -44 dBm is achieved at BER=4· 10-3 with 2 dB improvement ...
Using spectrum management techniques to differentiate services in elastic optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
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Elastic Optical Networks (EONs) have emerged as a promising solution to cope with the growth and heterogeneity of networks data traffic. Nevertheless, several problems arise in dynamic scenarios, being spectrum fragmentation ...
Direct phase modulation for UDWDM ONU with beat signals
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
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An ONU transmitter for UDWDM PONs based on direct phase modulated distributed feedback lasers (DFB) through digital beat signals is proposed and experimentally tested. The amplitude and duty cycle of the modulating signal ...
Experimental demonstration of an active stateful PCE performing elastic operations and hitless defragmentation
(2013)
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An 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 ...
Flexible PON Key technologies: digital advanced modulation formats and devices
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
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Flexible PON are future paradigm in parallel with flexible and elastic optical networks are under research for core networks. In the same way as those backbone optical networks can be significantly improved by following ...
Optical network automation [Invited tutorial]
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
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Increased levels of automation will be necessary in view of more stringent performance requirements that next generation optical transport networks need to support in a near term, not only for high capacity, but, even more ...
Demonstration of latency-aware 5G network slicing on optical metro networks
(Optical Society of American (OSA), 2022-01-01)
Article.
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The H2020 METRO-HAUL European project has architected a latency-aware, cost-effective, agile, and programmable optical metro network. This includes the design of semi-disaggregated metro nodes with compute and storage ...
Modeling filtering penalties in ROADM-based networks with machine learning for QoT estimation
(2020)
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Monitoring 3dB bandwidth and other spectrum related parameters at ROADMs provides information about quality of their filters. We propose a machine-learning model to estimate end-to-end filtering penalty for more accurate ...
BER degradation detection and failure identification in elastic optical networks
(2017-08-30)
Article.
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Article.
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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 ...
Demonstration of monitoring and data analytics-triggered reconfiguration in partially disaggregated optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
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We demonstrate a novel agent for optical disaggregated optical networks. When the Monitoring and Data Analytics detects a degradation, it recommends the SDN controller to trigger a network reconfiguration computed by a ...