Enhanced Sensitivity of Open Channel SPR-Based PCF Sensor Employing Plasmonic Materials for Analyte Sensing

Enhanced Sensitivity of Open Channel SPR-Based PCF Sensor Employing Plasmonic Materials for Analyte Sensing

Highly sensitive photonic crystal fiber (PCF) sensors based on the spectacle of surface plasmonic resonance (SPR) are analyzed numerically and demonstrated. The finite element method (FEM) technique is used to examine detection performance. This study, an SPR-based PCF structure, has been proposed w...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Vol. 17; no. 5; pp. 2075 - 2087
Main Authors: Islam, Nazrul, Masum, Md. Mohi Uddin, Arif, Md. Faizul Huq, Asaduzzaman, Sayed, Roy, Monoranjon, Yousuf, Mohammad Abu
Format: Journal Article
Language:English
Published: New York Springer US 01-10-2022
Springer Nature B.V
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Crystal fibers
Finite element method
Gold
Mathematical analysis
Nanotechnology
Open channels
Photonic crystals
Plasmonics
Refractivity
Sensitivity enhancement
Titanium dioxide
Plasmonic materials
Confinement loss
Surface plasmon resonance
Amplitude sensitivity
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Summary:Highly sensitive photonic crystal fiber (PCF) sensors based on the spectacle of surface plasmonic resonance (SPR) are analyzed numerically and demonstrated. The finite element method (FEM) technique is used to examine detection performance. This study, an SPR-based PCF structure, has been proposed which achieved a maximum amplitude sensitivity of 573.83 RIU −1 and wavelength sensitivity of 6000 nm/RIU at refractive index (RI) of 1.39. Plasmonic materials such as gold (Au) and titanium dioxide (TiO 2 ) have been implied inside the open channels of the PCF as a thin layer. The study explores different types of effects of detecting variation of gold thickness. The work also uses the simple appearance of air holes and pitch variation to achieve the best level detection performance. Moreover, a simplified geometry of SPR-based PCF has been proposed to trim the complexity of the manufacturing process. With an improved sensitivity performance, the benefit of the sensor will also make promising progress towards the detection of unknown biological analyte.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-022-01691-y