Open AccessOptical bistability in subwavelength compound metallic grating
Author(s) -
Hua Lü,
X. M. Liu
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.013794
Subject(s) - grating , bistability , optics , materials science , optical bistability , refractive index , plasmon , kerr effect , surface plasmon , reflection (computer programming) , optical switch , optoelectronics , nonlinear optics , diffraction grating , nonlinear system , physics , laser , quantum mechanics , computer science , programming language
We have investigated the optical bistability behavior based on an electromagnetically induced reflection (EIR) effect in a compound metallic grating consisting of subwavelength slits and Kerr nonlinear nanocavities embedded in a metallic film. The theoretical and simulation results show that a narrow peak in the broad reflection dip possesses a red-shift with increasing the refractive index of coupled nanocavities. Importantly, we have obtained an obvious optical bistability with threshold intensity about ten times lower than that of metallic grating coated by nonlinear material. The results indicate that our structure may find excellent applications for nonlinear plasmonic devices, especially optical switches and modulators.