▎ 摘　　要

NOVELTY - The utility model claims a phase shifter based on phase multiple optical bi-stable effect in the graphene array, comprising a structure can be represented as A (GB) NGA of the periodic graphene array, wherein A and B represents two different thickness of the dielectric sheet, and the thickness of the dielectric sheet A is greater than the thickness of the B, G represents a single layer graphene index N represents the number of GB repeating unit, using optical third-order nonlinear effect of graphene, realizing multiple bistable effect of transmission coefficient phase, and then adjusting the threshold value of the trigger phase shift in the phase shifter through the chemical potential of graphene. The phase shifter of the utility model can flexibly change the size of the phase shift amount.