A Completely Theoretical Design Method of Dielectric Image Guide Gratings in the Bragg Reflection Region

This paper presents a new and completely theoretical accurate method for the design of dlelectic image guide gratings. Our method is based on a network approach that can easily analyze, with satisfactory approximations, the interaction of dielectric step discontinuities. These are the fundamental constituents of our gratings. Measurements on a filter modeled at X-band show excellent agreement with the design characteristics.