Asymmetric Long-Range Surface Plasmon Polariton Waveguides for Sensing Applications

被引：1
|
作者：
Wei, Qiqin [1 ]
Xiao, Jing [1 ]
Chen, Shirong [1 ]
Wang, Quan [1 ]
Cai, Miao [1 ]
Yang, Daoguo [1 ]
Qin, Hongbo [1 ]
机构：
[1] Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin 541004, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 06期
关键词：
Sensors; surface plasmon polaritons; plasmonic waveguide;
D O I：
10.1109/JPHOT.2019.2944694
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：
A plasmonic sensing device based on an asymmetric long-range surface plasmon polaritons waveguide is proposed and investigated. The sensing structure consists of a microchamber and a gold strip with a cover layer, which is located on a dielectric supported by a silicon substrate. The optical and sensing properties of the device were studied using a finite element method. The sensitivity of the designed structure approaches 7.74 W/RIU for optimal sensing length and the limit of detection is 5.17 x 10(-7) RIU. The proposed device is appropriate for a wide range of sensing applications, in fields that include biochemistry, environmental science, food safety, and medicine.
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页数：9
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