Frey, F.F.FreyElschner, R.R.ElschnerSchmidt-Langhorst, C.C.Schmidt-LanghorstEmmerich, R.R.EmmerichSchubert, C.C.SchubertFischer, J.K.J.K.FischerFischer, R.F.H.R.F.H.Fischer2022-03-142022-03-142017https://publica.fraunhofer.de/handle/publica/4107922-s2.0-85084024231Nonlinear inter-channel interference is investigated by means of numerical simulations for an uncompensated Nyquist-WDM transmission scenario for heterogeneous flexible optical networks. Correlation and distribution functions are evaluated and the total nonlinear interference noise power is compared to predictions from analytical models.en621conference paper