On-chip multifunctional metasurfaces with full-parametric multiplexed Jones matrix

作者：Jitao Ji, Jian Li, Zhizhang Wang, Xueyun Li, Jiacheng Sun, Junyi Wang, Bin Fang, Chen Chen, Xin Ye, Shining Zhu, Tao Li · 发表于：Nature Communications · 年份：2024 · DOI：10.1038/s41467-024-52476-2 · 被引用次数：61 · 研究领域：Metamaterials and Metasurfaces Applications、Advanced Antenna and Metasurface Technologies、Antenna Design and Analysis

On-chip metasurface for guided wave radiation works as an upgrade of conventional grating couplers, enriching the interconnection between guided wave and free-space optical field. However, the number of controllable parameters in equivalent Jones matrix of on-chip metasurface is limited that restricts the channels for multiplexing. Here, a supercell design based on detour phase and geometric phase has been proposed to reach full-parametric modulation of Jones matrix. As proof of concept, four independent sets of amplitude-phase channels have been experimentally demonstrated through a single on-chip metasurface. Moreover, through joint modulation of three phase mechanisms including detour phase, geometric phase and propagation phase, the Jones matrix could be decoupled from forward- and backward-propagating guided waves for direction multiplexing. This work paves the way for guided wave radiation towards high-capacity multiplexing and may further extend its application in optical communications, optical displays and augmented/virtual reality. The authors demonstrate an on-chip metasurface based on supercell scheme to enable full modulation of Jones matrix. The direction-multiplexed functionality has been implemented by joint control of detour phase, geometric phase and propagation phase, unlocking two independent sets of Jones matrices.