Abstract
By exploiting the concept of internal surface plasmon polariton (I-SPP) resonances, which appear at nonsingle metallic film stacks, we have designed a metamaterial showing a negative effective index within a large frequency bandwidth. The designed structure consists of an arrangement of several fishnet layers. By properly adjusting the lattice and the thickness of the dielectric slab of the fishnet, an I-SPP mode can be excited at a certain frequency, giving rise to a negative permeability. Thus, when combining several fishnet layers, each one configured to excite an I-SPP at a slightly different frequency, the coupling among the fishnet layers will cause a plasmon hybridization effect that enables us to extend the negative-index bandwidth.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
C. García-Meca, R. Ortuño, F. J. Rodríguez-Fortuño, J. Martí, and A. Martínez
Opt. Lett. 34(10) 1603-1605 (2009)
Jiawei Cong, Binfeng Yun, and Yiping Cui
Appl. Opt. 51(13) 2469-2476 (2012)
Muhammad I. Aslam and Durdu Ö. Güney
J. Opt. Soc. Am. B 29(10) 2839-2847 (2012)