▎ 摘　　要

Active manipulation of dual transparency windows for EIT metamaterial in dark?bright?dark coupling mode, which is constructed by three graphene patterns, including graphene strip and two asymmetrical double-split graphene ring resonators, is numerically and theoretically investigated in terahertz regime. Simulation results illustrate that the causation of dual-windows EIT phenomenon is the near field coupling of two adjacent graphene patterns in the unit cell which acted as dark and bright mode respectively. In addition, dual transparency windows of EIT can be actively and selectively tuned to realize red or blue shift via varying of the Fermi energy of the corresponding dark mode element in the unit cell. Meanwhile, when the Fermi energies of dark mode elements are shifting inversely, dual transparency windows could be actively modified to single transparency window or even disappeared.