Dynamically tunable electro-optic switch and multimode filter based on twisted bilayer graphene strips

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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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Author and article information

Contributors

Zhimin Liu: (View ORCID Profile)

Xiao Zhang: (View ORCID Profile)

Xin Luo: (View ORCID Profile)

Journal

Title: Journal of Optics

Abbreviated Title: J. Opt.

Publisher: IOP Publishing

ISSN (Print): 2040-8978

ISSN (Electronic): 2040-8986

Publication date Created: March 12 2021

Publication date Created: February 01 2021

Publication date (Electronic): March 12 2021

Publication date (Print): February 01 2021

Volume: 23

Issue: 2

Page: 025104

Article

DOI: 10.1088/2040-8986/abe188

SO-VID: 15c20ea0-d459-4ca3-9fd2-6db7cd6d91ad

License:

https://iopscience.iop.org/page/copyright

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