In this paper, we have demonstrated an optical radio-frequency signal generation and single sideband modulation technique for Radio-over-fiber (RoF) systems. This technique uses stimulated Brillouin scattering interaction. We used a dual-electrode Mach-Zender modulator to realize Double side band modulation on one part and on the other part, a fiber Bragg grating (FBG) is employed to enhance the optical carrier suppression ratio and reduce the effect of residual optical harmonics. We also studied the effect of tunable data rate on BER and power penalty which is less than 1. 5 dbm. The Undesired suppression sideband ratio, USSR (ratio of amplified sideband and attenuated sideband) and power penalty is examined for the SBS and OTSSB techniques and results are presented. © Research India Publications.