Analysis of a Surface Plasmon Resonance Probe Based on Photonic Crystal Fibers for Low Refractive Index Detection |
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| Authors: | Chao Liu Lin Yang Qiang Liu Famei Wang Zhijie Sun Tao Sun Haiwei Mu Paul K Chu |
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| Institution: | 1.School of Electronics Science,Northeast Petroleum University,Daqing,People’s Republic of China;2.School of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin,People’s Republic of China;3.Institute of Microelectronics, Agency of Science, Technology and Research (A*STAR),Singapore,Singapore;4.Department of Physics and Materials Science,City University of Hong Kong,Kowloon,China |
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| Abstract: | A photonic crystal fiber (PCF)-based surface plasmon resonance (SPR) probe with gold nanowires as the plasmonic material is proposed in this work. The coupling characteristics and sensing properties of the probe are numerically investigated by the finite element method. The probe is designed to detect low refractive indices between 1.27 and 1.36. The maximum spectral sensitivity and amplitude sensitivity are 6 × 103 nm/RIU and 600 RIU?1, respectively, corresponding to a resolution of 2.8 × 10?5 RIU for the overall refractive index range. Our analysis shows that the PCF-SPR probe can be used for lower refractive index detection. |
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