▎ 摘　　要

We construct a laminated metamaterial structure of zipper-type monolayer graphene with silica, which is equipped with a distinctively dual plasmon-induced transparency (PIT) phenomenon. The graphene pattern in this structure craftily connects with the electrode so that we can dynamically control the PIT response (via regulating the bias voltage that applied between the electrode and the substrate to control the graphene Fermi energy), in which the range of voltage-regulate is calculated theoretically, proving to be a feasible measure for PIT response-tune. Then, the tuning discipline for this structure is summarized from the calculated result of the coupled mode theory deduced theoretical model and the simulation result. It is found that the structure possesses a great tuning performance within the tuning range we studied; also, as the structure ameliorates the monolayer graphene absorbance from 2.3% to about 50% within a broad dynamic frequency tuning range, the absorption peak frequency modulation depth is up to 45.46%. Besides, the group refractive index is discussed for reflecting the system capability of slow light, and the maximum of the coefficient can catch up to 595. Even if the impact of dielectric light- absorbance to slow light is taken into account, the slow light index at the transparent window is still as high as 200.