Photonic Sensors, 2015, 5 (2): 159–165, 网络出版: 2015-04-20   

Design of a Surface Plasmon Resonance Sensor Based on Grating Connection

Design of a Surface Plasmon Resonance Sensor Based on Grating Connection
作者单位
1 College of Electronic Engineering, Guangxi Normal University, Guilin, 541004, China
2 College of Mathematics and Statistics, Guangxi Normal University,Guilin, 541004, China
摘要
Abstract
Nowdays, the study of measurement of the biological field focuses on the research of improving surface plasmon resonance (SPR) in the fields of integration and detection sensitivity. We designed a kind of grating connected surface plasmon resonance sensor. Theoretically, we analyzed the wave vector and the effective refractive index relations with the diffraction grating structure. Then we obtained the nanoparticles enhancement SPR structure with a resolution 10 times higher than that of traditional SPR sensors. Also, we used the finite-difference time-domain (FDTD) analysis and simulation which showed that it was obvious with coupling effect by the nanoparticles enhancement SPR structure that the reflectance spectral bandwidth results validated the structure significantly which improved the sensitivity. Experimental results showed that the dynamic response of the designed sensor reached 10–6 RIU (refractive index unit). This study has the certain significance to long-distance and special sensing applications.

Jun ZHU, Liuli QIN, Shuxiang SONG, Junwen ZHONG, Siyuan LIN. Design of a Surface Plasmon Resonance Sensor Based on Grating Connection[J]. Photonic Sensors, 2015, 5(2): 159–165. Jun ZHU, Liuli QIN, Shuxiang SONG, Junwen ZHONG, Siyuan LIN. Design of a Surface Plasmon Resonance Sensor Based on Grating Connection[J]. Photonic Sensors, 2015, 5(2): 159–165.

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