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arXiv 2102.12465physics.optics
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具有手性覆盖层和衬底的石墨烯基纳米光波导:新的理论研究

Grounded Graphene-Based Nano-Waveguide with Chiral Cover and Substrate: New Theoretical Investigation

Mohammad Bagher Heydari, Mohammad Hashem Vadjed Samiei

摘要:

在本文中,我们提出了一个新的分析模型,接地手征平板波导覆盖石墨烯片。一般波导由夹在两个不同手性层(作为基底层和覆盖层)之间的石墨烯片构成。衬底被认为是完美的电磁导体(PEMC),其能够容易地转换为完美的电导体(PEC)或完美的磁导体(PMC)。对于一般结构,得到了一种新的矩阵表示,以确定其色散关系和其他传播参数。为了显示所提出的波导的丰富性,引入并研究了两种新的结构。已经表明,这些示例性结构的模态性质是可调的,通过改变石墨烯的化学势和手性。所提出的一般结构和它的分析模型可以用于设计可调谐等离子体激元器件在太赫兹频率。

英文摘要:

In this paper, we propose a new analytical model for grounded chiral slab waveguides covered with graphene sheets. The general waveguide is constructed of a graphene sheet sandwiched between two different chiral layers (as substrate and cover layers). The substrate is supposed to be a perfect electromagnetic conductor (PEMC), which is able to easily convert to a perfect electric conductor (PEC) or a perfect magnetic conductor (PMC). A novel matrix representation is obtained for the general structure to find its dispersion relation and other propagating parameters. To show the richness of the proposed waveguide, two new structures have been introduced and investigated. It has been shown that the modal properties of these exemplary structures are tunable by changing the chemical potential of the graphene and the chirality. The proposed general structure and its analytical model can be utilized for designing tunable plasmonic devices in THz frequencies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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