Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Modal properties of a cylindrical graphene-coated nanowire deposited on a hexagonal boron nitride substrate

Not Accessible

Your library or personal account may give you access

Abstract

Due to complementary chemical and optical characteristics, structural integration of graphene and hexagonal boron nitride (hBN) can lead to a promising platform for development of novel plasmonic devices. In this paper, we numerically investigate the modal behavior of a cylindrical graphene-coated nanowire (GNW) deposited on a thin hBN (GNW-hBN) substrate in the mid-infrared range. Our studies revealed that GNW-hBN can support hybridized plasmon-phonon modes in the upper reststrahlen band of hBN, which mainly originates from the strong coupling between plasmon modes in GNW and phonon modes in hBN. The characteristics of these hybrid modes can be effectively tuned by changing the chemical potential of graphene, hBN thickness, and gap distance between GNW and hBN. According to the results, by choosing smaller gap distances and tuning the chemical potential of graphene, GNW-hBN can exhibit a fundamental mode (m=0, where m is the azimuthal mode number) with higher effective index such that Real(neff) varies from 131.2–62.3 when the hBN thickness changes from 2–20 nm. In addition, the presence of an hBN slab can break the azimuthal symmetry of the high-order graphene plasmon modes (m1) in the GNW-hBN structure.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Optimizing encapsulated graphene in hexagonal boron nitride toward low propagation loss and enhanced field confinement

Yaser Hajati, Zeinab Zanbouri, and Mohammad Sabaeian
J. Opt. Soc. Am. B 36(5) 1189-1199 (2019)

Low-loss and high-performance mid-infrared plasmon-phonon in graphene-hexagonal boron nitride waveguide

Yaser Hajati, Zeinab Zanbouri, and Mohammad Sabaeian
J. Opt. Soc. Am. B 35(2) 446-453 (2018)

Hybrid nonlinear surface-phonon-plasmon-polaritons at the interface of nolinear medium and graphene-covered hexagonal boron nitride crystal

Yuexiang Wu, Leyong Jiang, Hailin Xu, Xiaoyu Dai, Yuanjiang Xiang, and Dianyuan Fan
Opt. Express 24(3) 2109-2124 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved