▎ 摘　　要

NOVELTY - The utility model claims a kind of improved based on the Mach of the graphene-Zehnder electro-optical modulator provided with a graphite film and graphene thin film electrode comprises a Mach-Zehnder electro-optical modulator double-arm phase modulation and interference system, electro-optic modulator double-arm. Using graphite film electrode loading electric field on the graphene film, graphene film passes through the electric field change of the light field energy of a modulating arm, so as to modulate the amplitude and phase of arm guide wave modulated in polarization and wave pattern. The improved Mach-Zehnder electro-optical modulator capable of selecting any P-wave light guide electric field amplitude and the phase position to form a plurality R=Pasterisk of combined amplitude and phase modulation. Using graphene as quick response characteristic, it can further improve the transmission rate and capacity of the existing optical fiber communication system, is the same as a minimum Euclidean distance, it is possible to provide more signal point.