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

Jitao Ji, Jian Li, Zhizhang Wang (), Xueyun Li, Jiacheng Sun, Junyi Wang, Bin Fang, Chen Chen, Xin Ye, Shining Zhu and Tao Li ()
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Jitao Ji: Nanjing University
Jian Li: Nanjing University
Zhizhang Wang: Nanjing University
Xueyun Li: Nanjing University
Jiacheng Sun: Nanjing University
Junyi Wang: Nanjing University
Bin Fang: Nanjing University
Chen Chen: Nanjing University
Xin Ye: Nanjing University
Shining Zhu: Nanjing University
Tao Li: Nanjing University

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract 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.

Date: 2024
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DOI: 10.1038/s41467-024-52476-2

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