Ultra-high speed RF filtering switch based on stimulated Brillouin scattering.

Abstract

Radio frequency (RF) filtering switch is highly desired for signal routing or manipulation in the RF system. Based on the stimulated Brillouin scattering effect and the electro-optics Pockels effect, we propose a novel RF filtering switch with a high-frequency filtering precision and a fast switching speed. We have experimentally demonstrated the RF filtering with a high precision of ∼34 MHz, a wide operation bandwidth of ∼18 GHz, and the RF switching at a speed of <100 ps, which is hundreds of times faster than the traditional RF switch.