Analysis of mutual couplings in a concentric circular ring plasmonic optical antenna array

被引：7
|
作者：
Gu, Guiru [1 ]
Li, Lin [2 ]
Zhang, Yingjie [2 ]
Kemsri, Thitikorn [2 ]
Lu, Xuejun [2 ]
机构：
[1] Stonehill Coll, Dept Phys, 320 Washington St, Easton, MA 02357 USA
[2] Univ Massachusetts Lowell, Dept Elect & Comp Engn, One Univ Ave, Lowell, MA 01854 USA
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
关键词：
LIGHT;
D O I：
10.1038/s41598-017-10690-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In this paper, we report the analysis of a concentric circular ring plasmonic optical antenna (POA) array using a simple lumped coupled circuit (LCC) model. The currents in the circular rings of the POA array and their mutual couplings are analyzed using the LCC model. The results agree well with the numerical simulation using CST's Microwave Studio (R). The LCC model reveals the mutual couplings between the antenna rings. It is found that the mutual couplings are not only between the adjacent antenna rings, but also involve their second (2nd) nearest or farther neighbors. Since the near-fields of the optical antennas are related to the currents in the optical antennas, the LCC model provides a useful tool for the analysis of the near-field and their mutual interactions in the circular ring POA array.
引用
收藏
页数：8
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