Abstract
Twisted bilayer graphene strips are proposed to excite dual-plasmon-induced-transparency (DPIT). Coupled mode theory is employed to fit the transmission spectra of finite-difference time-domain numerical simulations. When the upper- and lower-layers graphene are perpendicular to each other, an electric-optic switch can be realized only by changing the Fermi level of graphene, and the modulation degree of amplitude reaches 55%. Interestingly, DPIT can be degenerated to single PIT and gradually disappeared by changing the angle between the upper- and lower-layers graphene, thus multimode filters can be designed. Therefore, this work provides new ideas for designing multifunctional electro-optic devices.
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