Wire medium as metamaterial with tuned spectral characteristics

The paper is devoted to experimental and theoretical study of the spectral characteristics of anisotropic wire medium with tunable 2D unit-cell dimensions. We experimentally demonstrate possibility of the effective spectral characteristics control of the wire medium by varying the 2D unit-cell dimensions. In addition, we show that depending on geometric parameters of the unit-cell wire medium can operate both as high-pass filter, and as a band gap structure. We underline that investigated structure with rectangular unit-cell is a plasmonic-type medium under conditions λ
_p
/b=3. At lower values the wire medium is the electromagnetic band gap crystal.