In this letter, we propose the extension of a previously presented analytical model for the estimation of the signal-to-noise ratio (SNR) at the output of an adaptive equalizer in coherent optical transmission systems when transmission is modeled as a generic 2x2 matrix transfer functions, to be applied to polarization multiplexed communications based on advanced modulation formats (PM-QAM). We present the model and then we extensively test its accuracy on an possible application environment. Our findings show a remarkable agreement, with maximum SNR discrepancies of about 0.5 dB between time-domain simulations and analytical results.
@article{arxiv.2202.11692,
title = {An Analytical Model for SNR Prediction in Coherent Systems after generic Jones Matrices},
author = {Giuseppe Rizzelli and Pablo Torres Ferrera and Roberto Gaudino},
journal= {arXiv preprint arXiv:2202.11692},
year = {2022}
}