▎ 摘　　要

NOVELTY - The modulator has an optical waveguide whose surface is provided with a graphene part, where the optical waveguide is selected as a dielectric optical waveguide, a planar dielectric waveguide or a photonic crystal waveguide. An upper surface of a substrate is provided with a strip-shaped groove. A medium film is provided in the strip-shaped groove. A core area is provided with the Graphene part that is fixed on a top surface of the substrate. The Graphene part is covered on a surface of the core area. An upper surface of the substrate is provided with a medium film. USE - Graphene-based fully optical modulator for use in a optical fiber communication system. ADVANTAGE - The modulator is convenient for coupling with optical fiber light path system, and has small size, wide working frequency band and large working wave range and rapid response speed. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a Graphene-based fully optical modulator utilizing method. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a graphene-based fully optical modulator. '(Drawing includes non-English language text)'