Field enhancement of optical bowtie nano-antenna using exponential tapered profile

被引：5
作者：
El-sherbiny, Shamia [1 ]
Wageh, Swelm [2 ,3 ]
机构：
[1] Kafer El Shiekh Univ, Fac Engn, Dept Elect Engn, Kafer El Shiekh, Egypt
[2] King Abdulaziz Univ, Dept Phys, Fac Sci, Jeddah 21589, Saudi Arabia
[3] Menoufia Univ, Phys & Engn Math Dept, Fac Elect Engn, Menoufia 32952, Egypt
来源：
IET OPTOELECTRONICS | 2020年 / 14卷 / 02期
关键词：
energy harvesting; nanophotonics; antenna radiation patterns; bow-tie antennas; Vivaldi antennas; optical communication equipment; optical bowtie nanoantenna; exponential tapered profile; far-field optical properties; near-infrared range; Vivaldi antenna tapering shape; near-field enhancement; antenna structure; optical communication applications; near-field optical properties; microscopy applications; ABSORPTION; LIGHT;
D O I：
10.1049/iet-opt.2019.0049
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, both the near-field and far-field optical properties of curved sides bowtie nano-antenna are investigated in the near-infrared range. The curvature of the proposed structure is based on the Vivaldi antenna tapering shape. The effect of tapering rate on the near-field enhancement is studied, and the results show that the proposed antenna structure produces better field enhancement compared with conventional bowtie antenna with linear sides and hence it is promising for energy harvesting and microscopy applications. Also, the far-field properties are studied to decide the validity of the structure in optical communication applications.
引用
收藏
页码：75 / 80
页数：6
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