Fig. 3: The optimal window size for instantaneous power measurement and SNREff predicted by the EGN model using it.
From: Shaping lightwaves in time and frequency for optical fiber communication
a Pearson correlation coefficients between \({\eta }_{{SPM}}\) and \({\bar{\mu }}_{2}\) (left figure), and between \({\eta }_{{XPM}}\) and \({\bar{\mu }}_{2}\) (right figure) with various window sizes \(w\), obtained at 240 spans in Link D. The red lines are obtained using Eqs. (7) and (8), estimated to produce the greatest correlation. There is no XPM at \({R}_{{Sym}}\) = 88 GBd, since only one channel is transmitted. b \({SN}{R}_{{Eff}}\) predicted by the EGN model, obtained with the optimal \({w}_{{SPM}}^{* }\) and \({w}_{{XPM}}^{* }\) (green solid lines) and traditional \(w=1\) (red dotted lines), in comparison with the split-step simulation results (black dashed lines) at 60 and 240 spans in Link D. Source data for Fig. 3(a) are provided with this paper.
