Highly confined photon transport in subwavelength metallic slot waveguides

被引：234

作者：

Dionne, J. A.

Lezec, H. J.

Atwater, Harry A.

机构：

[1] CALTECH, Thomas J Watson Lab Appl Phys, Pasadena, CA 91125 USA

[2] CNRS, F-75794 Paris 16, France

来源：

NANO LETTERS | 2006年 / 6卷 / 09期

关键词：

Interfaces (materials) - Light propagation - Photons - Surface plasmon resonance - Transport properties;

D O I：

10.1021/nl0610477

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report experimental realization of subwavelength slot waveguides that exhibit both micrometer-range propagation and high spatial confinement of light. Attention is given to rectangular waveguides with a Si3N4 core and Ag cladding; core thicknesses of 50-100 nm and widths of 250 nm - 10 mu m are explored. Propagation lengths of similar to 5 lambda are achieved with light confined to lateral and transverse dimensions of similar to lambda/5 and similar to lambda/2, respectively. This unique combination of light localization and propagation is achieved via interacting surface plasmons, which produce short modal wavelengths and strong field confinement at each metal/dielectric interface.

引用

页码：1928 / 1932

页数：5

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