Independent Manipulating of Orthogonal-Polarization Terahertz Waves Using A Reconfigurable Graphene-Based Metasurface

Materials

Chen Zhang¹  Ling Wang¹  Li Deng¹  Jianfeng Zhu¹  Meijun Qu¹  Yuanyuan Zhang² 

[1] Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, No.10 Xitucheng Rd., Beijing 100876, China;School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, No.10 Xitucheng Rd., Beijing 100876, China;

关键词: graphene;    metasurface;    reconfigurable;    orthogonal-polarization;   

DOI  :  10.3390/ma11101817

来源: DOAJ

【 摘 要 】

Viewing the trend of miniaturization and integration in modern electronic device design, a reconfigurable multi-functional graphene-based metasurface is proposed in this paper. By virtue of the reconfigurability of reflection patterns, this metasurface is able to independently manipulate orthogonal linearly polarized terahertz wave. The building blocks of the proposed metasurface are series of graphene-strips-based unit-cells. Each unit-cell consists of two orthogonal graphene strips and a grounded substrate, which has anisotropic responses for each of orthogonal polarizations (x-polarized and y-polarized waves). The reflection phases of both x- and y-polarized waves can be controlled independently through separate electrical tuning. Based on the proposed metasurface, functionalities including beam splitting, beam deflecting, and linear-to-circular polarization converting using a shared aperture are numerically demonstrated and analyzed. Simulation results demonstrate excellent performance, which is consistent with the theorized expectations. This work paves the way for enhancing the miniaturization of modern electronic/optical devices and potentially has important applications in the next-generation information systems for communication, sensing, and imaging.

【 授权许可】

Unknown