Temperature effects on surface plasmon resonance sensor based on side-polished D-shaped photonic crystal fiber
•The dependence of side-polished D-shaped PCF SPR sensor on temperature.•Small lattice pitch or increased duty ratio enhance the temperature dependence.•D-shaped PCF SPR sensor fabricated by wheel polishing setup. A comprehensive temperature Drude theoretical mode has been established to study the t...
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Veröffentlicht in: | Measurement : journal of the International Measurement Confederation 2021-08, Vol.181, p.109504, Article 109504 |
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Sprache: | eng |
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Zusammenfassung: | •The dependence of side-polished D-shaped PCF SPR sensor on temperature.•Small lattice pitch or increased duty ratio enhance the temperature dependence.•D-shaped PCF SPR sensor fabricated by wheel polishing setup.
A comprehensive temperature Drude theoretical mode has been established to study the temperature effects on the side-polished photonic crystal fiber (PCF) surface plasmon resonance (SPR) sensor. In the theoretical model, the temperature dependence coefficients of fiber material refractive index (RI), sensing film thickness and metal-dielectric function have been considered. The finite element method (FEM) is used to study the influence of side-polished depth, metal thickness, air hole size, and lattice constant on sensing performance with findings as following: (1) the dependence of the resonance wavelength on temperature is almost unaffected by duty ratio or lattice pitch of PCF; (2) the peak loss of the PCF SPR sensor with small lattice pitch (or increased duty ratio) is more sensitive to temperature variation; (3) for the sensor working in intensity interrogation mode, linear relationships can be found between the peak loss versus the RI and temperature. Moreover, we fabricate a side-polished D-shaped PCF SPR sensor by a wheel polishing setup, and the experimental results display a good agreement with the theoretical investigations. This study offers a detailed way to analyze the temperature effects on the sensor, and may lead to the better design and the data-progress improvement for D-shaped PCF SPR sensor. |
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ISSN: | 0263-2241 1873-412X |
DOI: | 10.1016/j.measurement.2021.109504 |