Information rate limit due to stimulated Brillouin scattering for transmission capacity in soliton-based optical-fibre communications

Two main situations are analysed by studying analytically and numerically the time dependent coherent three-wave equations for SBS with periodic pump pulse input: (1) coherent where the solitons have the same phase; and (2) random where the phase of each soliton changes randomly with respect to that of the neighbouring solitons. For a train of well separated solitons, the SBS thresholds range from P_thr≃1 mW at f_bit≃0.7 GHz for the coherent phase to P_thr≃860 mW at f_bit≃20 GHz for the random phase