Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10140266 | Sensing and Bio-Sensing Research | 2018 | 17 Pages |
Abstract
A photonic crystal fiber (PCF) biosensor based on surface plasmon resonance (SPR) is to obtain maximum sensitivity for the detection of unknown analytes. Chemically stable and inactive plasmonic material gold (Au) is used outside of the PCF structure. To evaluate the performance of the sensor, a perfectly match layer (PML) is also added for diminishing the unwanted nonphysical radiation. The proposed sensor is consists of double layer symmetrical square air holes. A small air hole in the center is used to produce the more evanescent field. Sensing performance is numerically investigated by the finite element method (FEM) based on commercially available tools COMSOL Multiphysics. The maximum amplitude sensitivity of this proposed sensor is 442.11 RIUâ1 with the highest sensor resolution 1.66â¯Ãâ¯10â5 using amplitude integration method. The wavelength sensitivity is 6000â¯nm/RIU using amplitude integration method. The proposed sensor is widely applicable in bio-photonics applications.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Md. Nazmul Hossen, Md. Ferdous, Md. Abdul Khalek, Sujan Chakma, Bikash Kumar Paul, Kawsar Ahmed,