Resolution Enhancement of Optical Surface Plasmon Resonance Sensor Using Metamaterial

• Published in: Photonic sensors (Berlin) Vol. 5; no. 4; pp. 330 - 338
• Main Authors: Pal, Sarika, Prajapati, Y. K., Saini, J. P., Singh, V.
• Format: Journal Article
• Language: English
• Published: Chengdu University of Electronic Science and Technology of China 01.12.2015; Springer Nature B.V
• Subjects: Lasers; Measurement Science and Instrumentation; Microwaves; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Regular; RF and Optical Engineering; SPR传感器; 光学; 分辨率增强; 反射率曲线; 表面等离子体共振; 表面等离子共振; 计算结果; 高灵敏度; metamaterials; Fresnel equations; reflectance; Surface plasmon resonance sensor
• ISSN: 1674-9251; 2190-7439
• DOI: 10.1007/s13320-015-0269-5

In this paper, we present and discuss a an optical surface plasmon resonance （SPR） path to extend the enhancement of the resolution of sensor. Basically, our approach is to combine bi-metamaterial layers to design the SPR sensor. The calculation shows that the proposed SPR sensor structure has a preference over the conventional SPR sensors and bimetallic SPR sensors since it gives a much sharper reflectance dip and can achieve considerable sensitivity improvement when compared to the recently reported investigations. The effects of the metamaterial permittivity, permeability, and thickness on the reflectance curve are studied. It is also seen that metamaterial layers improve the field of the proposed SPR structure, which may provide a novel tool to significantly enhance the sensitivity and resolution of the sensors.