Measurement of refractive index variation by differential surface plasmon resonance technique |
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Authors: | Ju-Yi Lee Wu-Sheng Gu |
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Institution: | 130. Department of Mechanical Engineering, National Central University, Chungli, 32054, Taiwan
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Abstract: | A differential detection technique combined with a surface plasmon resonance technique is proposed for refractive index variation measurement. The experimental results demonstrate that our system can attain a resolution of 1.2 × 10?5 RIU (refractive index unit). In addition, a method for two-dimensional detection of the refractive index variation is demonstrated. The system is free from the influence of optical source fluctuation, and can improve the measurement sensitivity. |
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