Nanofabrication of metamaterials based on thin metallic films have resulted in a host of different designs that support Extraordinary Optical Transmission (EOT). In contrast to the more widely studied circular-shaped apertures, cross-shaped apertures have characteristics which can be modified in response to linearly polarized light, opening up new pathways for light manipulation at the nanoscale. Here we present a systematic study of the influence of device geometry and composition on the functional characteristics of polarisation controlled optical plasmonic devices.

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