Near-field optical probing of two-dimensional photonic crystals: theory and experiment

We report new experimental results, and their theoretical analysis, on the mechanisms that control light transfer between two integrated waveguides co nnected by two-dimensional matrices of dielectric pillars. The optical prop erties of the system are analysed from the well-established formalism of cl assical field susceptibilities (Green dyadic functions). We apply this sche me to investigate the optical properties of two-dimensional arrays connecte d to two integrated waveguides. Comparisons with current experimental work based on near-field optical probing are provided together with a spectral a nalysis of the phenomenon.