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

Broadband graphene modulator based on a plus-shaped plasmonic slot waveguide

Not Accessible

Your library or personal account may give you access

Abstract

A novel broadband graphene modulator based on a plus-shaped plasmonic slot waveguide (PSPSW) has been demonstrated. The designed modulator includes four square silver nanowires and a graphene-${{\rm Al}_2}{{\rm O}_3}$-graphene layer. Four silver nanowires are separated from each other by an ${{\rm SiO}_2}$ gap layer, forming a plus-shaped slot waveguide. This modulator overcomes the challenge of polarization mismatch between the electric field of the plasmonic mode and the graphene plane. The highly confined plasmonic mode can strongly interact with the graphene sheets. The properties of three eigenmodes and the effect of the geometric parameters have been studied. By geometric optimization, this modulator could offer a high modulation depth of 1.13 dB/µm, a wide operation wavelength ranging from 1200 to 1600 nm, and a large modulation bandwidth of 95 GHz. This design may promote the development of graphene-based nanophotonic devices.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
All-optical graphene-on-silicon slot waveguide modulator based on graphene’s Kerr effect

Saleh Ojaghi, Saeed Golmohammadi, and Hadi Soofi
Appl. Opt. 60(26) 7945-7954 (2021)

Waveguide-coupled hybrid plasmonic modulator based on graphene

Bao-Hu Huang, Wei-Bing Lu, Xiao-Bing Li, Jian Wang, and Zhen-guo Liu
Appl. Opt. 55(21) 5598-5602 (2016)

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 (7)

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

Equations (2)

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved