Quality of Transmission Estimator Enabling the Transparency Paradigm in Legacy IMDD Networks

Optical transmission based on IMDD modulation and dispersion-managed links is still of interest for the community because of its low-cost. Although the optical technologies deployed for this networking scenario are well-consolidated, operators are still requiring software-based orchestration capabilities. To this purpose, the line system and in general the network management software need to rely on a Quality-of-Transmission Estimator (QoT-E) enabling a quick evaluation of lightpath performance for the optical feasibility and network optimization. In this work, we propose a QoT-E considering the joint effect of SPM, XPM and FWM.