▎ 摘　　要

NOVELTY - The modulator has a surface layer (1), a graphene layer (2), a first flexible medium layer (3), a perovskite layer (4), a metal structure layer (5), a second flexible medium layer (6), and a bottom substrate layer (7) that are arranged from top to bottom. The metal structure layer is composed of several metal structures, and the metal structure is provided with two metal bars with different lengths and a beam metal bar whose two ends are respectively perpendicularly connected to the two metal bars with different lengths. The incidence of laser light causes the conductivity of the graphene layer and the perovskite layer to change, and the incident terahertz wave is controlled by a multi-material photoelectric joint. The metal structure is interacted with the terahertz wave to generate resonance, which increases the modulation depth of the multi-material photoelectric joint control. USE - Meta-material modulator for a terahertz wave. ADVANTAGE - The metal structure layer and the surface layer are provided with electrodes, so as to perform multi-material photoelectric combined control to the terahertz wave through electric field. The metal structure interacts with the terahertz wave to generate resonance, thus increasing modulation depth. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of metamaterial modulator. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of the meta-material modulator. Surface layer (1) Graphene layer (2) First flexible medium layer (3) Perovskite layer (4) Metal structure layer (5) Second flexible medium layer (6) Bottom substrate layer (7)