25 August 2017 Polarizing filter based on anisotropic absorption of graphene ribbons with varying width
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Abstract
In this paper, we theoretically demonstrate a polarizing filter consisted of graphene ribbon arrays with varying width placed on the top surface of dielectric and a metal reflector rested at the bottom of the structure. It is found that proper ribbon width, which corresponds to resonant frequency of graphene plasmons, is a crucial factor that can significantly influence the absorption effect. The results of fullwave numerical simulations indicate that total absorption of more than 90% for TE polarization and approaching to 1% for TM polarization can be achieved at normal incidence in the infrared range. Therefore, this characteristic can be applied into polarizing filter by adjusting the coupling effect between the graphene ribbon arrays. Such structure will be beneficial to the manufacture of infrared nano-photonic devices for optical filtering and selective absorption.
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Peng Sun, Qiyong Liu, Weijin Kong, Maojin Yun, "Polarizing filter based on anisotropic absorption of graphene ribbons with varying width", Proc. SPIE 10346, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XV, 103462G (25 August 2017); doi: 10.1117/12.2273267; https://doi.org/10.1117/12.2273267
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