Wide-range coupling between surface plasmon polariton and cylindrical dielectric waveguide mode

被引：15

作者：

Ta, Van Duong ^{[1
]}

Chen, Rui ^{[1
]}

Sun, Han Dong ^{[1
]}

机构：

[1] Nanyang Technol Univ, Div Phys & Appl Phys, Sch Phys & Math Sci, Singapore 637371, Singapore

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 14期

关键词：

SUBWAVELENGTH CONFINEMENT; PROPAGATION; INDEX;

D O I：

10.1364/OE.19.013598

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A modified hybrid waveguide with a wide-range coupling and long propagation has been proposed and the coupled mode theory has been applied to study the hybrid waveguide systematically. Two structures are comparatively discussed, namely, a dielectric wire and a circular capillary tube, which are buried in a polymer matrix and separated from the silver substrate by a gap. The simulated results indicate that the circular capillary tube demonstrates a stronger coupling between the surface plasmon polariton and the waveguide mode compared to the solid dielectric wire. Furthermore, the electric field is highly confined in the gap area and can propagate several hundred micrometers. (C) 2011 Optical Society of America

引用

页码：13598 / 13603

页数：6

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