Nature Communications (Sep 2024)

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,
  • Tao Li

DOI
https://doi.org/10.1038/s41467-024-52476-2
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 7

Abstract

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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.