IEEE Access | 卷:9 |
Designing Highly Sensitive Surface Plasmon Resonance Sensor With Dual Analyte Channels | |
Sivaprakasam Palani1  Mominul Ahsan2  Md. Abdul Based3  Md. Towfik Elahi4  Md. Aslam Mollah4  Hasan Sarker4  Julfikar Haider5  | |
[1] College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia; | |
[2] Department of Computer Science, Deramore Lane, University of York, Heslington, York, U.K.; | |
[3] Department of Electrical and Electronic Engineering, Faculty of Science and Technology, Dhaka International University, Dhaka, Bangladesh; | |
[4] Department of Electronics and Telecommunication Engineering, Rajshahi University of Engineering and Technology, Rajshahi, Bangladesh; | |
[5] Department of Engineering, Manchester Metropolitan University, Manchester, U.K.; | |
关键词: Plasmonic; bio-sensor; photonic crystal fiber; finite element method; detection limit; | |
DOI : 10.1109/ACCESS.2021.3118927 | |
来源: DOAJ |
【 摘 要 】
The ease of controlling waveguide properties through unparalleled design flexibility has made the photonic crystal fiber (PCF) an attractive platform for plasmonic structures. In this work, a dual analyte channel’s highly sensitive PCF bio-sensor is proposed based on surface plasmon resonance (SPR). In the proposed design, surface plasmons (SPs) are excited in the inner flat portion of two rectangular analyte channels where gold (Au) strip is deposited. Thus, the surface roughness that might be generated during metal deposition on circular surface could be effectively reduced. Considering the refractive index (RI) change in the analyte channels, the proposed sensor is designed and fully characterized by the finite element method based COMSOL Multiphysics software. Improved sensing characteristics including wavelength sensitivity (WS) of 186,000 nm/RIU and amplitude sensitivity (AS) of 2,792.97 RIU−1 in the wide RI range of 1.30 to 1.43 is obtained. In addition, the proposed sensor exhibits excellent resolution of
【 授权许可】
Unknown