Method of making a three-dimensional photonic band-gap crystal, in which a three-dimensional structure is built by successively forming a plurality of superimposed layers of photosensitive chalcogenide and creating a predetermined grating on each of them. A layer of photoresist is superimposed on each...http://www.google.de/patents/US6521136?utm_source=gb-gplus-sharePatent US6521136 - Method for making three-dimensional photonic band-gap crystals
