Abstract
A D-shaped photonic crystal fiber (D-PCF) with square-lattice and nanoscale gold film is proposed and analyzed by the finite element method. Based on the strong surface plasmon resonance effect between fiber core modes and surface plasmon polariton modes, the designed D-PCF is sensitive to the refractive index variation of analyte and can be found application in biological sensors. The structure parameters of the proposed D-PCF are investigated in order to optimize the sensing performance. The sensitivity can reach to 12,450 nm/RIU as refractive index of analyte ranging from 1.345 to 1.410. The simulation results also show that the sensing performance has high linearity which is necessary in application.
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The work is supported by the National Natural Science Foundation of China (NSFC) (61178026, 61475134, 61505175).
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Wang, G., Li, S., An, G. et al. Highly sensitive D-shaped photonic crystal fiber biological sensors based on surface plasmon resonance. Opt Quant Electron 48, 46 (2016). https://doi.org/10.1007/s11082-015-0346-4
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DOI: https://doi.org/10.1007/s11082-015-0346-4