Journal
JOURNAL OF MODERN OPTICS
Volume 63, Issue 12, Pages 1189-1195Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2015.1135257
Keywords
PCF; SPR sensor; birefringent analysis; FEM; sensitivity
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Funding
- Natural Science Foundation of China [51474069, 51374072, 51101027]
- Program for New Century Excellent Talents in Heilongjiang Provincial University [1253-NCET-002]
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A highly birefringent photonic crystal fibre is proposed and characterized based on a surface plasmon resonance sensor. The birefringence of the sensor is numerically analyzed by the finite-element method. In the numerical simulation, the resonance wavelength can be directly positioned at this birefringence abrupt change point and the depth of the abrupt change of birefringence reflects the intensity of excited surface plasmon. Consequently, the novel approach can accurately locate the resonance peak of the system without analyzing the loss spectrum. Simulated average sensitivity is as high as 1131 nm/RIU, corresponding to a resolution of 1 x 10(-4) RIU in this sensor. Therefore, results obtained via the approach not only show polarization independence and less noble metal consumption, but also reveal better performance in terms of accuracy and computation efficiency.
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