Light propagation in planar optical waveguides made of silicon nanocrystals buried in silica glass

Silicon nanocrystals in silica—Novel active waveguides for nanophotonics

“…Our calculation show that the red and blue bands correspond to second and third order leaking modes (the first one being in infrared). Broadening of the mode structure may be a consequence of the very low number of reflections undertaken by coupled light before escaping to the substrate [17].…”