A method of fabricating optical filter is disclosed. The method includes providing the substrate and selectively etching the substrate to form a plurality of freestanding layers. A plurality of dielectric layers is disposed over an outer surface of each of the freestanding layers. The resultant optical...http://www.google.de/patents/US20020012172?utm_source=gb-gplus-sharePatent US20020012172 - Method of fabricating optical filters
