Method and structure for coupling light in and out of an inplane waveguide through the top and bottom surfaces of photonic crystals

摘要

An add drop filter utilizing a three dimensional photonic crystal structure for WDM applications is disclosed. Electromagnetic radiation at specific frequencies may be extracted (drop feature) from or inserted (add feature) into an in-plane waveguide from the top or bottom of a layer-by-layer photonic crystal structure by coupling the light through one or more defects