Abstract

We present an effective generic method for manipulating energy flow in a metal–dielectric–metal plasmonic waveguide by spatially varying the thickness of the dielectric layer. To illustrate the utility of our method, we theoretically design a plasmonic convex lens and analyze its performance using full-wave numerical simulations. In particular, we show that such a lens is low dispersive and broadband.

© 2012 Optical Society of America

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