Multilayer thin-film optical filters: Design, fabrication, and applications

Thin-film optical filters have many applications in a wide range of instruments and high-technology systems. In this article, a short introduction on the design methods of multilayer optical filters is first given, and the three methods that have been used at Ferdowsi University for the design of various optical filters are explained. A brief description of the common optical materials and deposition techniques are also given. Finally, a few examples of the work done at Ferdowsi University on design and fabrication of multilayer thin-film optical filters are included.