Asymmetric Long-Range Surface Plasmon Polariton Waveguides for Sensing Applications

Qiqin Wei; Jing Xiao; Shirong Chen; Quan Wang; Miao Cai; Daoguo Yang; Hongbo Qin

doi:10.1109/JPHOT.2019.2944694

IEEE Photonics Journal (Jan 2019)

Asymmetric Long-Range Surface Plasmon Polariton Waveguides for Sensing Applications

Qiqin Wei,
Jing Xiao,
Shirong Chen,
Quan Wang,
Miao Cai,
Daoguo Yang,
Hongbo Qin

Affiliations

Qiqin Wei: ORCiD; School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Jing Xiao: ORCiD; School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Shirong Chen: School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Quan Wang: School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Miao Cai: ORCiD; School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Daoguo Yang: School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China
Hongbo Qin: School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, China

DOI: https://doi.org/10.1109/JPHOT.2019.2944694
Journal volume & issue: Vol. 11, no. 6
pp. 1 – 9

Abstract

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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 × 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.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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