LOCALIZATION OF LIGHT BY A SET OF PARALLEL CYLINDERS

Using a rigorous theory of scattering, numerical evidence of the exist ence of localized modes in a one-dimensional or a two-dimensional set of circular dielectric rods is given. Particular attention is paid to the transition observed between the phenomena of propagation in period ic structures and localization phenomena in random structures. In part icular, we show the strong connection between the phenomenon of a phot onic band gap that appears in two-dimensional periodic sets of rods an d the phenomenon of Anderson localization which is observed when the p eriodicity is broken.