title: Flexible modulation of plasmon-induced transparency in a strongly coupled graphene grating-sheet system.
abstract: General actively tunable near-field plasmon-induced transparency (PIT) systems based on couplings between localized plasmon resonances of graphene nanostructures not only suffer from interantenna separations of smaller than 20 nm, but also lack switchable effect about the transparency window. Here, the performance of an active PIT system based on graphene grating-sheet with near-field coupling distance of more than 100 nm is investigated in mid-infrared. The transparency window in spectrum is analyzed objectively and proved to be more likely stemmed from Aulter-Townes splitting. The proposed system exhibits flexible tunability in slow-light and electro-optical switches, promising for practical active photonic devices.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Luo
authors.forename: Wei
authors.initials: W
authors.lastname: Cai
authors.forename: Yinxiao
authors.initials: Y
authors.lastname: Xiang
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Mengxin
authors.initials: M
authors.lastname: Ren
authors.forename: Xinzheng
authors.initials: X
authors.lastname: Zhang
authors.forename: Jingjun
authors.initials: J
authors.lastname: Xu