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Journal Articles Optics Letters Year : 2022

Broadband tunable metasurface platform enabled by dynamic phase compensation

Chunsheng Guan
  • Function : Author
Rui Feng
Badreddine Ratni
Xumin Ding
Jianjia Yi
Ming Jin
  • Function : Author
Qun Wu
  • Function : Author

Abstract

Broadband metasurfaces have attracted significant attention for a variety of applications in imaging and communication systems. Here, a method to alleviate the chromatic aberrations issue is proposed in the microwave region using dynamic phase compensation enabled by a reconfigurable metasurface. The dispersion characteristic of the meta-atom implemented with varactor diodes can be flexibly manipulated electronically, such that the dispersion-induced phase distortions over a wide frequency band can be compensated dynamically to achieve broadband performances. Various aberration-free functionalities can be realized with the proposed active metasurface. Near-field measurements are performed on a fabricated prototype to demonstrate aberration-free beam bending and hologram imaging, showing good agreement with simulation results. Such an active metasurface platform paves the way to efficient devices for wireless power transfer, sensors, and communication and antenna systems at radio or much higher frequencies.
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Dates and versions

hal-04177635 , version 1 (05-08-2023)

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Chunsheng Guan, Rui Feng, Badreddine Ratni, Xumin Ding, Jianjia Yi, et al.. Broadband tunable metasurface platform enabled by dynamic phase compensation. Optics Letters, 2022, 47 (3), pp.573. ⟨10.1364/OL.449863⟩. ⟨hal-04177635⟩
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