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Metallic nano-structured lens has the potential applications of transportingsubwavelength imaging information and it is achieved by manipulating the lengthof the nanorod and the periodicity of the rod array. In this paper, wedemonstrate the impact of filling ratio on the subwavelength imagingcapabilities of such a lens. Through full-wave electromagnetic simulation, wehave demonstrated that the imaging performance of silver (Ag) nanorod arraydoes not only depend on the length and periodicity but also on the fillingratios or the radius of the wire medium. We have investigated two differentgeometries for nanorod e.g., cylindrical and triangular rod and examined theirperformance for different filling ratios.

Impact of filling ratio on subwavelength optical imaging with two different geometries