title: Efficient coupling into slow-light photonic crystal channel guides using photonic crystal tapers.
abstract: Photonic crystal tapers have been designed for coupling of light from ridge waveguides into low group velocity photonic crystal channel guides. The coupling efficiency is increased from 3 % (case of butt-coupling) to 97 % for frequencies in the band-edge region, corresponding to a group index close to 100, as predicted using 2D finite-difference time-domain simulations.
authors: Pierre
authors: P
authors: Pottier
authors: Marco
authors: M
authors: Gnan
authors: Richard M
authors: RM
authors: De La Rue