Abstract
In this Letter, a novel waveguide based on hybrid surface plasmon polaritons (HSPPs) is proposed and numerically analyzed. This waveguide consists of two dielectric nanowires placed on both sides of a nanowedge-patterned metal film, which can confine light in the ultra-deep-subwavelength region (ranging from to ) with a long propagation length (ranging from 1200 to 3500 μm). Compared to a previous HSPPs waveguide without the nanowedges, with the same propagation length, our proposed structure has much higher mode confinement with 1 order of magnitude smaller normalized mode area. An investigation of the effect of structural perturbations indicates that our proposed waveguide also has good tolerance of fabrication errors. The proposed waveguide could be an interesting alternative structure to realize nanolasers and optical trapping.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Yusheng Bian, Zheng Zheng, Ya Liu, Jiansheng Liu, Jinsong Zhu, and Tao Zhou
Opt. Express 19(23) 22417-22422 (2011)
Xueqing He, Tigang Ning, Shaohua Lu, Jingjing Zheng, Jing Li, Rujiang Li, and Li Pei
Opt. Express 26(8) 10109-10118 (2018)
Jing Zhang, Likang Cai, Wenli Bai, Yun Xu, and Guofeng Song
Opt. Lett. 36(12) 2312-2314 (2011)