All-optical switching and slow light in photonic-crystal waveguide-resonator structures

We analyze resonant transmission in photonic-crystal waveguides coupled to nonlinear resonators. We reveal that the discrete nature of the photonic-crystal structures allows for a novel, geometry-mediated enhancement of nonlinear effects, based on the high-Q side-coupled nonlinear resonators, which can be useful for a design of all-optical slow-light photonic devices.