Sideband generation using a Fiber-Optical Modulator (FOM)

Abstract

We have constructed a Fiber Optical Modulator (FOM), which produces on the incoming laser frequency shifts of the order of 30 GHz. The modulator consist of a fiber of suffi- cient length, where the transmission is saturated by stimulated Brillouin scattering (SBS). The frequency shift is determined by the parameters of the fiber and is fixed. The ratio of intensity of the shifted frequency and the incoming frequency can be varied over a large range by varying the incoming intensity with respect to the threshold intensity for SBS.