Open AccessTunable plasmonic filter and variable optical attenuator based on ring metal–insulator–metal waveguide
Author(s) -
Guo Jianping,
Zhu Jiahu,
Zhou Wen
Publication year - 2013
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2013.0029
Subject(s) - optical attenuator , materials science , attenuator (electronics) , plasmon , optoelectronics , metal insulator metal , optical filter , finite difference time domain method , waveguide , optics , refractive index , filter (signal processing) , voltage , attenuation , fiber optic sensor , physics , computer science , capacitor , quantum mechanics , composite material , computer vision , fiber
A tunable nanoscale plasmonic filter and variable optical attenuator structure based on a rectangular ring metal–insulator–metal waveguide cavity containing electro‐optic (EO) material is proposed and numerically demonstrated by using the finite‐difference time‐domain technique. The simulation results show that the output of the device can be electrically controlled by tuning the refractive index of the EO material and the structure can be used as tunable filter and variable optical attenuator alternatively under very low voltage.