Paper presents usage numerical modeling of propagation electromagnetic waves. For this method a numerical model was prepared. The numerical model was created in the MatLab program environment. For layered heterogeneous medium is deduced algorithm for reflection on several layers. Several layers are in form of periodical structures which are composite of homogenous material. The reflection and refraction are analyzing accordance with Snell's law for electromagnetic waves. Deduced algorithm was project for the visible spectrum. Reflection and refraction on heterogonous material is solving by numerical method. This method is suitable for design application of the metamaterial. This method is suitable for specific purposes of detail analysis for design nanomaterial. Analysis propagation of wide THz band signal for A € (400; 700 nm) as propagation of electromagnetic waves is very time demanding.
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