▎ 摘　　要

NOVELTY - The detector has a substrate material layer orderly provided with a metal reflecting layer, a dielectric spacer layer, a graphene layer and a metal strip gate layer, where the dielectric spacer layer is silicon dioxide, aluminum oxide or hafnium oxide film layer. The substrate material layer is provided with a silicon chip that is formed with a silicon dioxide film layer with thickness of 300nm on a surface, where the substrate material layer is made of gold, silver, aluminum or alloy. The graphene layer is formed by a single-atom graphene layer. The metal strip gate layer realizes two-dimensional grating. USE - Anisotropic plasmon resonance cavity graphene polarization detector. ADVANTAGE - The detector realizes local strong light field of deep sub-wavelength scale when the wavelength and cavity length so as to satisfy the interference phase length condition and mode reaches the resonance state, and can improve graphene light absorption and light response, and reflects polarization direction parallel to the incident light of the metal bar grid, and effectively excites absorption and light response of the graphene so as to enhance high polarization extinction ratio and light response of the selected polarization state. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an anisotropic plasmon resonance cavity graphene polarization detector designing method. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of an anisotropic plasmon resonance cavity graphene polarization detector.