GN-model-based SNR estimation in 15.2-THz bandwidth inline-amplified transmission with 80-km fibre spans

We validated <1-dB-mean-absolute GN-model-based SNR estimation errors against experimentally measured SNRs in 15.2-THz ultra-wideband transmission over 160- and 400-km G.652.D fibre consisting of 80-km spans with PPLN-based optical parametric inline amplifiers. We found gain equalization for increasing the total throughput using SNR estimation.