Long range hybrid tube-wedge plasmonic waveguide with extreme light confinement and good fabrication error tolerance

被引：23
作者：
Ding, Li [1 ]
Qin, Jin [1 ]
Xu, Kai [1 ]
Wang, Liang [1 ]
机构：
[1] Univ Sci & Technol China, Dept Opt & Opt Engn, Anhui Key Lab Optoelect Sci & Technol, Hefei 230026, Anhui, Peoples R China
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 04期
关键词：
SUBWAVELENGTH SCALE; SILICON NANOTUBES; METAL WEDGES; POLARITON; SURFACE; MODE; PROPAGATION; INTEGRATION; SUBSTRATE;
D O I：
10.1364/OE.24.003432
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We studied a novel long range hybrid tube-wedge plasmonic (LRHTWP) waveguide consisting of a high index dielectric nanotube placed above a triangular metal wedge substrate. Using comprehensive numerical simulations on guiding properties of the designed waveguide, it is found that extreme light confinement and low propagation loss are obtained due to strong coupling between dielectric nanotube mode and wedge plasmon polariton. Comparing with previous studied hybrid plasmonic waveguides, the LRHTWP waveguide has longer propagation length and tighter mode confinement. In addition, the LRHTWP waveguide is quite tolerant to practical fabrication errors such as variation of the wedge tip angle and the horizontal misalignment between the nanotube and the metal wedge. The proposed LRHTWP waveguide could have many application potentials for various high performance nanophotonic components. (C)2016 Optical Society of America
引用
收藏
页码：3432 / 3440
页数：9
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