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.
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收藏
页码：1928 / 1932
页数：5
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