A Graphene Based Metasurface for Transmittive-type Linear to Circular Polarization Converter with Tunable Characteristics

S. Ghosh, Santanu Das, Somak Bhattacharyya
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Abstract

An ultrathin ($\sim\lambda/11.11$) graphene-based metasurface polarization converter has been discussed in this report. The proposed device is a compact two-layered structure having a periodicity of $\sim\lambda/14.28$. A linearly polarized (LP) electromagnetic wave gets converted to a circularly polarized (CP) wave when it passes through the proposed metasurface between 3 THz and 3.5 THz. The Stokes parameters are calculated to validate the circularly polarized nature of the transmitted wave. The characteristics is tunable in nature owing to the change of applied bias to the graphene layer.
具有可调谐特性的透射型线圆偏振变换器石墨烯基超表面
本文讨论了一种超薄($\sim\lambda/11.11$)石墨烯基超表面极化变换器。所提出的装置是一个紧凑的双层结构,具有$\sim\lambda/14.28$的周期性。当线性极化(LP)电磁波通过提议的3太赫兹和3.5太赫兹之间的超表面时,它被转换成圆极化(CP)波。计算了斯托克斯参数来验证透射波的圆偏振特性。由于施加在石墨烯层上的偏压的变化,该特性在本质上是可调的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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