Nanophotonics School original site Homepage of Sajeev John with some nice pictures and movies to PhC Joannopoulos Group Joannopoulos-Gruppe with free Software (MPB etc.) Photonic Crystals at Twente University Homepage of Lagendijk und Vos, with some Applets to play with. (->Education->Optics Corner) Homepage of DFG-Topic 'Photonic crystals' ->Projects for Links to many German PhC-Groups (DFG - Deutsche Forschungsgemeinschaft - German Research Foundation, but they have also english version of the site) Photonic Band Gaps Links Many links to "Photonic Crytals", but the page was not updated for a long time