Waveguide-coupled hybrid plasmonic modulator based on graphene

Abstract

In this paper, we propose a low-transmission-loss, high-speed, graphene-based electro-absorption modulator with a hybrid plasmonic waveguide at 1.55 μm. In the proposed device, double-layer graphene is placed on top of the horizontal hybrid plasmonic waveguide to enhance the light–graphene interaction. The adjustment of the in-plane permittivity of the anisotropy graphene causes a significant modulation of the absorption at the operating bandwidth of 0.4 THz, with modulation length of 8.5 μm and modulator footprint of $1.6{\mathrm{\mu m}}^2$. A taper silicon coupler is used for waveguide coupling, and 80% coupling efficiency is achieved. In addition, the modulation potential on a smaller footprint is further shown.

© 2016 Optical Society of America

Design and analysis of a phase modulator based on a metal–polymer–silicon hybrid plasmonic waveguide

Xiaomeng Sun, Linjie Zhou, Xinwan Li, Zehua Hong, and Jianping Chen
Appl. Opt. 50(20) 3428-3434 (2011)

Design of a graphene-based dual-slot hybrid plasmonic electro-absorption modulator with high-modulation efficiency and broad optical bandwidth for on-chip communication

Zhongwei Wu and Yin Xu
Appl. Opt. 57(12) 3260-3267 (2018)

Graphene-based hybrid plasmonic waveguide for highly efficient broadband mid-infrared propagation and modulation

Longfang Ye, Kehan Sui, Yanhui Liu, Miao Zhang, and Qing Huo Liu
Opt. Express 26(12) 15935-15947 (2018)

Low-energy high-speed plasmonic enhanced modulator using graphene

Baohu Huang, Weibing Lu, Zhenguo Liu, and Siping Gao
Opt. Express 26(6) 7358-7367 (2018)

In-plane electric field confinement engineering in graphene-based hybrid plasmonic waveguides

Binbin Wang, Sylvain Blaize, Sera Kim, Heejun Yang, and Rafael Salas-Montiel
Appl. Opt. 58(27) 7503-7509 (2019)