▎ 摘　　要

NOVELTY - The optical waveguide has adjusting layer that is formed by laminating nine hafnium oxide layers and eight graphene layers crossly, and changes the effective refractive indexes of the first rectangular waveguide and the second rectangular waveguide by changing the Fermi levels of the eight graphene layers to reduce the length of the first phase shift arm and the second phase shift arm, so that the area of the whole electro-optical half adder is relatively small. A flat plate capacitor model is formed between a hafnium dioxide layer and two graphene layers adjacent to it, so the capacitor only consumes electric energy in charging and discharging process and will not generate electric energy consumption continuously. USE - Electro-optical half adder based on graphene- silicon hybrid integrated optical waveguide. ADVANTAGE - The adjusting layer changes the effective refractive indexes of the first rectangular waveguide and the second rectangular waveguide by changing the Fermi levels of the eight graphene layers to reduce the length of the first phase shift arm and the second phase shift arm, so that the area of the whole electro-optical half adder is relatively small, which is convenient for cascade expansion. A flat plate capacitor model is formed between a hafnium dioxide layer and two graphene layers adjacent to it, so the capacitor only consumes electric energy in charging and discharging process and will not generate electric energy consumption continuously, which makes device has smaller power consumption. DESCRIPTION OF DRAWING(S) - The drawing shows the block diagram of the graphene-based-silicon hybrid integrated optical waveguide electro-optical half- adder structure. (Drawing includes non-English text). Second shift arm (5) First electrode (6) Second electrode (7) First 3 decibel coupler (U1) Second decibel coupler (U2)