Mei Yang, Kai Xia, Xinjie Feng, Yunhan Luo, Jieyuan Tang, Junbin Fang, J. Zhang, Huihui Lu, Jianhui Yu, Yongzhu Chen, Zhe Chen
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Design and Optimization of Surface Plasmon Resonance Fiber Sensor Based on Gold Nano-Column Array
In this paper, a surface plasmon resonance fiber sensor based on gold nano-column array instead of gold film is designed and optimized. The finite element method (FEM) is used to optimize the sensitivity, resonance wavelength and resonance intensity of the fiber sensor relate to the diameter of the nano-gold column. The optimized sensor has 70 nm gold nano-column coated on a D-shaped single mode fiber. The results show that the average sensitivity reaches 5318 nm/RIU when the environmental refractive index changing from 1.33 RIU to 1.39 RIU, which is much higher than that in conventional surface Plasmon resonance structure.
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