MEMS Tunable Metasurfaces Based on Gap Plasmon or Fabry-Perot Resonances.

ABSTRACT: Tunable metasurfaces promise to enable adaptive optical systems with complex functionalities. Among possible realizations, a recent platform combining microelectromechanical systems (MEMS) with gap-surface plasmon (GSP) metasurfaces offers high modulation efficiency, broadband operation, and fast response. We compare tunable metasurfaces operating in GSP and Fabry-Pérot (FP) regions by investigating polarization-independent blazed gratings both numerically and experimentally. Peak efficiency is calculated to be ∼75% in both cases (∼40% in measurements), while the operation bandwidth is found larger when operating in the GSP region. Advantages of operating in the FP region include relaxed assembly requirements and operation tolerances. Additionally, simulation and experimental results show

SUBMITTER: Thrane PCV 

PROVIDER: S-EPMC9479152 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature