Ferrari, A.A.FerrariNapoli, A.A.NapoliCosta, N.N.CostaFischer, J.K.J.K.FischerPedro, J.J.PedroForysiak, W.W.ForysiakRichter, A.A.RichterPincemin, E.E.PinceminCurri, V.V.Curri2022-03-142022-03-142019https://publica.fraunhofer.de/handle/publica/41082410.1109/CLEOE-EQEC.2019.8872247Current forecasts indicate that the fastest growing IP-traffic is in metro and data center interconnect (DCI). The exploitation of the entire low-loss spectrum of single-mode fibers (SMF) (from 1260 nm up to 1620 nm) was proposed to avoid the predictable capacity crunch and the eventual need for a new fibre infrastructure roll-out. First analytic result considering multi-band (MB) transmission (from O- to L-band) hint an achievable traffic load exceeding 200 Tb/s for a 500 km link in a single SMF.en621Multi-band optical systems to enable ultra-high speed transmissionsconference paper