• 文献标题:   Dynamically tunable electro-optic switch and multimode filter based on twisted bilayer graphene strips
  • 文献类型:   Article
  • 作  者:   LIU ZM, ZHANG ZB, ZHOU FQ, ZHANG X, GAO ED, LUO X
  • 作者关键词:   twisted graphene strip, pit, tunable photoelectric switch, terahertz
  • 出版物名称:   JOURNAL OF OPTICS
  • ISSN:   2040-8978 EI 2040-8986
  • 通讯作者地址:  
  • 被引频次:   7
  • DOI:   10.1088/2040-8986/abe188
  • 出版年:   2021

▎ 摘  要

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.