This data provides the data points of Figures 3-11 from the the paper "On the impact of launch power optimisation and transceiver noise on the performance of ultra-wideband transmission systems", submitted in the Journal of Optical Communications and Networking (JOCN).Each figure are in separate folders. For each figure you will find the corresponding TXT file used to plot the data of the figures in the paper. The TXT files is made of columns, where each column represent one of the curves in the graphs. The titles of each columns are self explanatory so you can easily related the columns with the graphs in the paper.Please, read the file "read me" if you find it in the relevant figure folder.