Harmonic signal generation and frequency upconversion using selective sideband Brillouin amplification in single-mode fiber

Harmonic signal generation and frequency upconversion at millimeter-wave bands are experimentally demonstrated by using selective sideband Brillouin amplification induced by stimulated Brillouin scattering in a single-mode fiber. The harmonic signals and frequency upconverted signals are simultaneously generated by the beating of optical sidebands, one of which is Brillouin amplified. By using this method, we successfully demonstrate generation of third-harmonic millimeter waves at 32.55 GHz with f_LO of 10.85 GHz and upconversion of 10 Mbps quadrature-shift keyed data at f_IF of 1.55 GHz into a 30 GHz band with more than 17 dB RF power gain.