Design of silicon photonic crystal integrated optical devices

Photonic crystal has attracted extensive interest in the past 25 years due to its great power to mold the flow of light in micrometer/nanometer scale and promising aspects in building all-optical integrated devices and circuits. In this talk we present our recent efforts of design, fabrication, and characterization of integrated optical elements and devices in infrared silicon two-dimensional photonic crystal slabs. These devices operate either on band gap confinement or on band dispersion control. We focus on topics such as the broad-band wide-angle self-collimation effect, on-chip optical diodes and isolators, new cavities without apparent confinement barriers, and polymer-silicon hybrid nonlinear photonic crystal.