Optimization of Stimulated Brillouin Scattering Gain in a Double-Stripe Si3N4 Waveguide

We employ a genetic algorithm to optimize the stimulated Brillouin scattering gain coefficient in a symmetric double-stripe (SDS) S i
3
N
4
waveguide. We achieve 15× enhancement compared to previous results. Further, we verify the numerical findings with measurements for a selected set of SDS waveguides.