High-performance polarization beam splitter based on anisotropic plasmonic nanostructures

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Journal Article
Applied Physics B: Lasers and Optics, 2018, 124 (9)
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© 2018, Springer-Verlag GmbH Germany, part of Springer Nature. We propose an alternative design of efficient and compact polarization beam splitters for wide-angle and polarization-sensitive incidence of electromagnetic waves at near-infrared frequencies. The designed system is constructed by depositing periodic metallic strips on top and bottom of a continuous metal film. Based on the optimization of structure parameters, the whole system can suppress transmission (~ 0%) for one polarization and enhance transmission for another polarization (~ 95%). This phenomenon of anisotropic transmission can be attributed to different performances of impedance along different polarization directions. This device may find applications in optical components and polarization filter.
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