Design of a Surface Plasmon Resonance Sensor Based on Grating Connection  

作　　者：Jun ZHU Liuli QIN Shuxiang SONG Junwen ZHONG Siyuan LIN 

机构地区：[1]College of Electronic Engineering, Guangxi Normal University, Guilin, 541004, China [2]College of Mathematics and Statistics, Guangxi Normal University, Guilin, 541004, China

出　　处：《Photonic Sensors》2015年第2期159-165,共7页光子传感器（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China （No. 61061006） and Guangxi Normal University Doctor Scientific Research Foundation.

摘　　要：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 10times 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.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 10times 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.

关 键 词：Surface plasmon resonance waveguide grating mode coupling sensitivity RESOLUTION 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置] TP212.14[自动化与计算机技术—控制科学与工程]