Properties of three-dimensional plasmonic slot waveguides

Georgios Veronis; Shanhui Fan

doi:10.1117/12.794322

26 August 2008 Properties of three-dimensional plasmonic slot waveguides

Georgios Veronis, Shanhui Fan

Proceedings Volume 7032, Plasmonics: Metallic Nanostructures and Their Optical Properties VI; 703216 (2008) https://doi.org/10.1117/12.794322
Event: NanoScience + Engineering, 2008, San Diego, California, United States

Abstract

We investigate the properties of the modes supported by three-dimensional subwavelength plasmonic slot waveguides. We show that the fundamental mode supported by a symmetric plasmonic slot waveguide, composed of a subwavelength slot in a thin metallic film embedded in an infinite homogeneous dielectric, is always a bound mode. Its modal fields are highly confined over a wavelength range extending from zero frequency to the ultraviolet. We then show that for an asymmetric plasmonic slot waveguide, in which the surrounding dielectric media above and below the metal film are different, there always exists a cutoff wavelength above which the mode becomes leaky.

Citation Download Citation

Georgios Veronis and Shanhui Fan "Properties of three-dimensional plasmonic slot waveguides", Proc. SPIE 7032, Plasmonics: Metallic Nanostructures and Their Optical Properties VI, 703216 (26 August 2008); https://doi.org/10.1117/12.794322

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