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A Compact High Sensitive D Shape Surface Plasmon Sensor

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Title A Compact High Sensitive D Shape Surface Plasmon Sensor
 
Creator Nivedha, S
Senthilnathan, K
 
Subject D-shaped fiber sensor
Photonic crystal fiber
Refractive index
Surface plasmon resonance.
 
Description 483-489
2021In this paper, we numerically design a refractive index-based surface plasmon fiber sensor by exploiting the optical characteristics of a commercially available side polished D-shaped photonic crystal fiber (PCF) using finite element method. The proposed sensor could work in the infrared regime for a wide range of analytes with refractive indices ranging from 1.33 to 1.36. The proposed sensor exhibits a maximum sensitivity of 31,800 nm/RIU with a resolution of 3.14×10-6 RIU when the refractive index is varied from 1.355 to 1.36. Further, considering the practical implementation, we carry out the fabrication tolerance of ± 5% of the proposed sensor by varying the optimized structural parameters. Based on the numerical results, we find that the proposed sensor is highly robust against the variations in the structural parameters. As the proposed fiber sensor has a strong surface plasmon resonance between the core mode and the surface plasmon mode, it is highly sensitive even for a minimum change in the refractive index of the analyte which is an attribute of high preference in biosensors.
 
Date 2021-07-19T06:58:49Z
2021-07-19T06:58:49Z
2021-07
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/57730
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.59(07) [July 2021]