圆极化复用型多功能超构表面研究进展

文中回顾并总结了课题组近期关于圆极化复用型多功能超构表面的研究进展. 从几何相位在正交圆极化波作用下的共轭对称响应出发，基于超构表面的等效琼斯矩阵提出了交叉极化双通道复用的独立调控方法，突破了几何相位的交叉极化耦合限制. 进一步，基于同极化与交叉极化分量间的幅相关系，提出了三通道复用的多元波前集成方法，实现了对透射圆极化电磁能量的全场调控. 在此基础上，通过引入手性诱导相位提出了圆极化四（全）通道复用的波前调控方法，有效提高了对圆极化电磁能量的利用效率，为提高现代通信系统信道容量及信息传输速率打下理论基础.

Recent progresses of circular polarization multiplexing engineered multi-functional metasurfaces

In this paper, the recent progresses of circular polarization (CP) multiplexing engineered multi-functional metasurfaces is reviewed. Firstly, in order to break through the physical limitation introduced by the conjugate symmetric geometric phases responses under orthogonal CP incidences, the equivalent Jones matrix of metasurface model is derived and the independent manipulation method of two cross-polarized phase responses is proposed. Furthermore, the three-channel wave-front integration method based on metasurface is proposed based on amplitude and phase relationship between co- and cross-polarized output components, which achieves the full manipulation of transmitted CP electromagnetic energy. On these basis, the concept of chirality-assisted phase and the wave-front manipulation method for all full CP channels is proposed, which enhances the utilization efficiency of CP electromagnetic energy. The results proposed in this paper can pave the solid theoretical foundation for increasing the capability of information channels and transmission rate.