A novel method and device for separating light of differing wavelengths (wavelength demultiplexing) uses a very simple and compact multilayer dielectric structure having high angular dispersion at certain wavelengths and angles of incidence. The structure is composed of alternating layers of dielectric...http://www.google.fr/patents/US6591035?utm_source=gb-gplus-shareBrevet US6591035 - Method for dispersing light using multilayered structures
Method for dispersing light using multilayered structures
