Optical carrier‐suppression of microwave signals with stimulated Brillouin scattering in long fiber ring

A novel and simple system based on stimulated Brillouin scattering in long fiber ring for optical‐carrier suppression is presented. In this system, a large optical carrier reduction can be attained easily at relative low input power. The anti‐Stokes wave is inhibited by adjusting the Stokes wave feedback. Experiments are implemented to suppress the optical carrier of a microwave photonics signal. About 35‐dB optical carrier reduction and a modulation‐gain factor of 27 are achieved.