Selectivity of dominant surface plasmon polariton modes using thin metal waveguides with grating structures

Autor:	Kou Hamashima, Di Wu, Seiya Kishimoto, Shuichiro Inoue, Shinichiro Ohnuki
Rok vydání:	2022
Předmět:	Physics and Astronomy (miscellaneous) General Engineering General Physics and Astronomy
Zdroj:	Japanese Journal of Applied Physics. 61:082002
ISSN:	1347-4065 0021-4922
Popis:	The conversion of incident light to surface plasmon polaritons (SPPs) was verified for a dielectric-metal-dielectric waveguide with a grating structure. The dominant SPP mode with respect to the propagation distance could be selected by adjusting the thickness of the gold film. To realize highly efficient light-to-SPPs conversion, the grating parameters for a realistic length of plasmonic waveguides were optimized using a recently developed numerical technique, FDCFD-FILT. This novel technique is the combination of finite-difference complex-frequency-domain (FDCFD) with fast inversion of laplace transform (FILT) and a powerful tool for designing plasmonic waveguides and investigating propagation characteristics efficiently.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::55b074b2319f3cf2702179e31daa203d https://doi.org/10.35848/1347-4065/ac7bc4 Zobrazit plný text záznamu