Plasmonics

, 6:753

All-Optical Plasmonic Switches Based on Coupled Nano-disk Cavity Structures Containing Nonlinear Material

Authors

  • Jin Tao
    • Division of Microelectronics, School of Electrical and Electronic EngineeringNanyang Technological University
    • Division of Microelectronics, School of Electrical and Electronic EngineeringNanyang Technological University
    • Division of Physics and Applied Physics, School of Physical and Mathematical SciencesNanyang Technological University
  • Xu Guang Huang
    • Key laboratory of Photonic Information Technology of Guangdong Higher Education InstitutesSouth China Normal University
Article

DOI: 10.1007/s11468-011-9260-1

Cite this article as:
Tao, J., Wang, Q.J. & Huang, X.G. Plasmonics (2011) 6: 753. doi:10.1007/s11468-011-9260-1

Abstract

All-optical plasmonic switches based on a novel coupled nano-disk cavity configuration containing nonlinear material are proposed and numerically investigated. The finite difference time domain simulation results reveal that the single-disk plasmonic structure can operate as an “on–off” switch with the presence/absence of pumping light. We also demonstrate that the proposed T-shaped plasmonic structure with two disk cavities can switch signal light from one port to another under an optical pumping light, functioning as a bidirectional switch. The proposed nano-disk cavity plasmonic switches have many advantages such as compact size, requirement of low pumping light intensity, and ultra-fast switching time at a femto-second scale, which are promising for future integrated plasmonic devices for applications such as communications, signal processing, and sensing.

Keywords

All-optical switchSurface plasmonWaveguidePhotonic integrated circuits

Copyright information

© Springer Science+Business Media, LLC 2011