We numerically simulate the distortion of an analog signal carried in a microwave photonics link containing a phase sensitive amplifier (PSA), focusing mainly on amplitude modulation format. The numerical model is validated by comparison with experimental measurements. By using the well known two-tone test, we compare the situations in which a standard intensity modulator is used with the one where a perfectly linear modulator would be employed. We also investigate the role of gain saturation on the nonlinearity of the PSA. Finally, we establish the conditions, in which the signal nonlinearity introduced by the PSA itself can be extremely small.
@article{arxiv.2009.05399,
title = {Investigation of analog signal distortion introduced by a fiber phase sensitive amplifier},
author = {Debanuj Chatterjee and Yousra Bouasria and Weilin Xie and Tarek Labidi and Fabienne Goldfarb and Ihsan Fsaifes and Fabien Bretenaker},
journal= {arXiv preprint arXiv:2009.05399},
year = {2023}
}