Experimental characterization of dispersion properties of the leaky modes in planar photonic crystal waveguide

We have experimentally obtained the dispersion diagram of the leaky modes in a planar photonic crystal waveguide for wavelengths from 1440 nm to 1590 nm. A small stop band around /spl lambda/=1500 nm is also detected. The experimental results are in very good agreement with our 3D FDTD calculations.