Use of the Stimulated Brillouin Scattering Effect in Optical Fibers to Generate Microwave Signals

Stimulated Brillouin Scattering (SBS) effect present in single-mode optical fibers is used to generate microwave signals. This approach is carried in an experimental way obtaining the microwave signal around 11 GHz exhibiting a Signal-to-Noise Ratio (SNR) of 45 dB. Afterward, by means of a series of simulations using the VPI photonics software, it is demonstrated that this frequency can generate harmonic frequencies at 21.99 GHz and 32.98 GHz. For this goal, a Mach-Zehnder Intensity Modulator (MZ-IM) acts as a frequency duplicator obtaining the harmonic signals of 21.99 GHz and 32.98 GHz. SNR values for both signals produce 36.58 dB and 20.45 dB, respectively.