▎ 摘　　要

NOVELTY - Optical modulator has a substrate arranged from bottom to top, a sequentially insulating layer, a graphene grating layer and a metal grated layer, where the metal grate layer is adhered to the surface of the graphene layer by the adhesive layer. The thickness of the insulating layer is 100-150nm, the material of the insulating layer is one of silicon dioxide, calcium fluoride or magnesium fluoride, and the number of layers of the graphene layer is 1-5 layers. USE - Optical modulator for regulating and controlling surface plasmon. Uses include but are not limited to light sensing, light modulation and photoelectric detection. ADVANTAGE - The modulator can adjust amplitude, wavelength and phase of the surface plasmon of the transmission, and can adjust the amplitude and wavelength of the light, and is convenient to use, and effectively saves cost, and has great application potential in the field of photoelectric detection and sensing. The metal grating layer is adhered on the surface of the graphene layer through the adhesive layer, thus realizing wave vector matching. The modulators can be used in modern communication and photoelectric integration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of light modulator for regulating and controlling surface plasmon. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the optical modulator for regulating and controlling surface plasmon. 4Hydrogen peroxide