Equivalent circuit model for the analysis and design of graphene-based tunable terahertz polarizing metasurfaces

Author:

Mazraeh-Fard Isa1,Alighanbari Abbas1

Affiliation:

1. Shiraz University

Abstract

In this work, we present an equivalent circuit model that facilitates the analysis and design of graphene-based transmission- and reflection-mode tunable terahertz polarizers. The conditions for polarization conversion are analytically derived, and a set of closed-form design formulas is presented. Given the target specifications, the key structural parameters are directly calculated. The proposed method is rigorously validated for two linear-to-circular polarizers operating in transmission and reflection modes. The results from the circuit model and full-wave electromagnetic simulation are compared, and excellent agreement is observed. The proposed circuit model is accurate and effective, and speeds up the analysis and design processes. The polarizers studied in the present work feature simple geometries and competitive performance with respect to other metasurface polarizers. The tunable fractional bandwidths, over which linear-to-circular polarization conversion is achieved, by varying the graphene chemical potential, are 65% and 36%, respectively, for the two transmission- and reflection-mode polarizers.

Funder

Shiraz University

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3