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This paper presents the performance analysis of a sensing configuration of refractive index, based on surface plasmon resonance (SPR) in microstructured D-type optical fiber with a thin gold layer, using the finite-element method. The configuration is analyzed in terms of the loss and distribution Poynting vector. The results are compared with a conventional SPR D-type optical fiber sensor for refractive index measurement. The simulation results show an improvement of the sensitivity and resolution (10 × 103nm/RIU and 9.8 × 10-6RIU, respectively, when considering an accurately spectral variation detection of 0.1 nm).
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Santos et al. (2015) studied this question.
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