▎ 摘　　要

NOVELTY - The structure (100) has a graphene stack comprising graphene layers and thin film dielectric layers, where the graphene layers and the thin film dielectric layers are alternately stacked on one another, and the graphene layers comprise an amorphous graphene. An electric field (E1) applies an electric field to the graphene layers, where the amorphous graphene is present in a form of a pattern. The graphene layers are spaced apart from one other, where the thin film dielectric layers are provided between the graphene layers. USE - Multi-stack graphene structure. ADVANTAGE - The structure reduces thickness of a thin film dielectric layer, thus reducing spaces between graphene stacks, and enhancing an efficiency of the electric field. The efficiency of optical modulation of the multi-stack graphene structure may be enhanced as compared to a single layer graphene structure. The structure increases the graphene stacks so as to gradually increase an enhancement factor of the device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a device for operating a multi-stack graphene structure. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a multi-stack graphene structure. Electric fields (E1, E2, E3) Substrate (SUB) Waveguide (WG) Structure (100) Device (600)