Low noise, regeneration of optical frequency comb-lines for 64QAM enabled by SBS gain

We demonstrate narrow-band spectral-line amplification by Stimulated Brillouin Scattering (SBS) of a parametrically generated frequency comb, enabling lower noise carriers for 96-Gb/s-DP-64-QAM with bit-error rate −3 over the C-band. Scalability to SBS gain-combs is also shown.