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Opt Express. 2008 Jun 9;16(12):8421-6.

Optical bistability in metal gap waveguide nanocavities.

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  • 1Key Laboratory of Acoustic and Photonic Materials and Devices, Ministry of Education and Department of Physics, Wuhan University, Wuhan 430072, China.

Abstract

Metal-dielectric nanocavities constructed by filling a piece of nonlinear optical material into metal gap waveguides are introduced for realizing optical bistability in nanodomain. Finite-difference time-domain simulation reveal that such a structure can realize optical bistable effect with much weaker operating light power in a nanoscale nonlinear medium. We attribute it to the enhancement of local field intensity and nanoscale confinement of surface plasmon polaritons. Our results verify a feasible way for constructing nanoscale optical logical gates, switches, and all-optical transistors etc. for high density integration of optical circuits.

PMID:
18545555
[PubMed - indexed for MEDLINE]
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