Mode converter in metal-insulator-metal plasmonic waveguide designed by transformation optics

被引：23
|
作者：
Kong, Xiang-Tian [1 ,2 ]
Li, Zu-Bin [1 ,2 ]
Tian, Jian-Guo [1 ,2 ]
机构：
[1] Nankai Univ, TEDA Appl Phys Sch, Key Lab Weak Light Nonlinear Photon, Minist Educ, Tianjin 300457, Peoples R China
[2] Nankai Univ, Sch Phys, Tianjin 300457, Peoples R China
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 08期
基金：
中国国家自然科学基金;
关键词：
POLARITONS; LIGHT; SILICON;
D O I：
10.1364/OE.21.009437
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A metal-insulator-metal (MIM) waveguide can support two plasmonic modes. Efficient conversion between the two modes can be achieved by reshaping of both phase and power density distributions of the guided mode. The converters are designed with the assistance of transformation optics. We propose two practical configurations for mode conversion, which only consist of homogeneous materials yielded from linear coordinate transformations. The functionalities of the converters are demonstrated by full wave simulations. Without consideration of transmission loss, conversion efficiency of as high as 95% can be realized. (C) 2013 Optical Society of America
引用
收藏
页码：9437 / 9446
页数：10
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