Asymmetric Long-Range Surface Plasmon Polariton Waveguides for Sensing Applications

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 sen...

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Bibliographic Details
Published in:IEEE Photonics Journal
Main Authors: Qiqin Wei, Jing Xiao, Shirong Chen, Quan Wang, Miao Cai, Daoguo Yang, Hongbo Qin
Format: Article
Language:English
Published: IEEE 2019-01-01
Subjects:
Sensors
surface plasmon polaritons
plasmonic waveguide
Online Access:https://ieeexplore.ieee.org/document/8853295/
Description
Summary: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&#x002F;RIU for optimal sensing length and the limit of detection is 5.17&#x00A0;&#x00D7;&#x00A0;10<sup>&#x2212;7</sup> RIU. The proposed device is appropriate for a wide range of sensing applications, in fields that include biochemistry, environmental science, food safety, and medicine.
ISSN:1943-0655

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