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Thermo-optic modulation of plasmonic bandgap on metallic photonic crystal slab

TitleThermo-optic modulation of plasmonic bandgap on metallic photonic crystal slab
Publication TypeJournal Article
Year of Publication2013
AuthorsRen, F., X. Wang, and A. X. Wang
JournalApplied Physics Letters
Volume102
Issue18
Pagination181101
Date Published05/2013
ISSN00036951
Keywordsfocused ion beam technology, gold, light transmission, optical modulation, photonic crystals, plasmonics, refractive index, thermo-optical effects
Abstract

We demonstrate active control of plasmonic bandgap on a metallic photonic crystal slab using thermo-optic effects. The Au grating, which is milled by focused-ion beam on a glass substrate, is designed to exhibit an extraordinary optical transmission and a sharp transitional edge for high modulation efficiency. Only a moderate refractive index modulation of Δn = 0.0043 is required to obtain more than 60% modulation depth with surface-normal optical coupling.

DOI10.1063/1.4804202
Short TitleAppl. Phys. Lett.