Multichannel direct transmissions of nearfield information

Xiang Wan; Qian Zhang; Tian Yi Chen; Lei Zhang; Wei Xu; He Huang; Chao Kun Xiao; Qiang Xiao; Tie Jun Cui

doi:10.1038/s41377-019-0169-3

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Multichannel direct transmissions of nearfield information

Article

- Multichannel direct transmissions of nearfield information
- Light: Science & Applications Vol. 8, Issue 4, Pages: 538-545(2019)
- Affiliations：
  
  1.The State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
  2.National Mobile Communications Research Lab, Southeast University, Nanjing 210096, China
- Author bio：
  
  Tie Jun Cui (tjcui@seu.edu.cn)
- Funds：
- DOI：10.1038/s41377-019-0169-3
  CLC：
- Published：2019，
  
  Published Online：03 July 2019，
  
  Received：07 December 2018，
  
  Revised：05 June 2019，
  
  Accepted：06 June 2019
- Accepted：
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Wan, X. et al. Multichannel direct transmissions of nearfield information. Light: Science & Applications, 8, 538-545 (2019).
DOI：

Wan, X. et al. Multichannel direct transmissions of nearfield information. Light: Science & Applications, 8, 538-545 (2019). DOI： 10.1038/s41377-019-0169-3.

摘要

Abstract

A digital-coding programmable metasurface (DCPM) is a type of functional system that is composed of subwavelength-scale digital coding elements with opposite phase responses. By configuring the digital coding elements

a DCPM can construct dynamic near-field image patterns in which the intensity of each pixel of the image can be dynamically and independently modulated. Thus

a DCPM can perform both spatial and temporal modulations. Here

this advantage is used to realize multichannel direct transmissions of near-field information. Three points are selected in the near-field region to form three independent channels. By applying various digital phase codes on the DCPM

independent binary digital symbols defined by amplitude codes (namely

weak and strong amplitudes) are transmitted through the three channels. The measured near-field distributions and temporal transmissions of the system agree with numerical calculations. Compared with the conventional multichannel transmission

the proposed mechanism achieves simultaneous spatial and temporal modulations by treating DCPM as an energy radiator and information modulator

thereby enduing DCPM with high potential in near-field information processing and communications.

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references

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