Single-Layer Re-Organizable All-Dielectric Meta-Lens Platform for Arbitrary Transmissive Phase Manipulation at Millimeter-Wave Frequencies

As a prominent candidate to cope with both device integration and miniaturization, multifunctional metadevices have attracted increasing interest recently. However, suffering from several demerits, conventional multifunctional devices could not meet practical demands. In this article, we elaborate on a single-layer transmissive all-dielectric meta-lens platform that can flexibly manipulate beams by pluggable phase elements over a broad millimeter-wave regime. The pluggable element of the meta-lens platform is able to provide a full $2\pi $ transmission phase coverage together with a high transmission coefficient. The elements are encoded into 36 phase modules as a phase library. The designed phase modules can be reassembled that span $2\pi $ uniformly to reconstruct distinct functions, due to their dynamic pluggable feature. To verify its flexible assembly and efficient phase modulation, the meta-lens platform with different arrangements of phase modules is assembled and demonstrated in the experiment, which is in good agreement with theoretical and simulation analyses. Owing to the properties of flexible assembly, broad bandwidth, and high efficiency, the proposed meta-lens platform paves the way for potential applications in millimeter-wave regimes, such as beamforming, computer-generated hologram, and other complex demands that involve phase manipulations.