TY - JOUR
T1 - The biochemical sensor based on liquid-core photonic crystal fiber filled with gold, silver and aluminum
AU - Liu, Qiang
AU - Ma, Zhuang
AU - Wu, Qiang
AU - Wang, Weilin
N1 - Funding Information: This research was funded by the National Natural Science Foundation of China (Grant No. 51907017 ), Key Science and Technology Research Projects of Higher Education Institutions in Hebei Province of China (Grant No. ZD2019304 ), Fundamental Research Funds for the Central Universities of China (Grant No. N182304011 ) and China National Fund for Studying Abroad. The authors thank Christopher Markwell of Northumbria University for his revision in language.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - A highly sensitive SPR-PCF based biochemical sensor has been proposed based on finite element method simulations. Two metal wires are assumed to fill into two air holes in the y direction and the liquid analyte with refractive index higher than background material is injected into the central air hole. The liquid analyte supports liquid-core mode which couples to SPP mode as the phase matching condition is satisfied. High sensitivity of fiber sensor is achieved by the direct interaction between transmitted light and liquid analyte. The fiber sensor possesses the sensitivities of −8383.9 nm/RIU, −8428.6 nm/RIU and –8776.8 nm/RIU by filling gold, silver and aluminium respectively into the air holes of the PCF as the refractive index of liquid analyte varies from 1.454 to 1.478. The influences of the structural parameters of the PCF on the resonance wavelength and confinement loss are also analyzed.
AB - A highly sensitive SPR-PCF based biochemical sensor has been proposed based on finite element method simulations. Two metal wires are assumed to fill into two air holes in the y direction and the liquid analyte with refractive index higher than background material is injected into the central air hole. The liquid analyte supports liquid-core mode which couples to SPP mode as the phase matching condition is satisfied. High sensitivity of fiber sensor is achieved by the direct interaction between transmitted light and liquid analyte. The fiber sensor possesses the sensitivities of −8383.9 nm/RIU, −8428.6 nm/RIU and –8776.8 nm/RIU by filling gold, silver and aluminium respectively into the air holes of the PCF as the refractive index of liquid analyte varies from 1.454 to 1.478. The influences of the structural parameters of the PCF on the resonance wavelength and confinement loss are also analyzed.
KW - Biochemical sensor
KW - Finite element method
KW - Photonic crystal fiber
KW - Surface plasmon resonance
UR - https://www.scopus.com/pages/publications/85085205748
U2 - 10.1016/j.optlastec.2020.106363
DO - 10.1016/j.optlastec.2020.106363
M3 - Article
AN - SCOPUS:85085205748
SN - 0030-3992
VL - 130
JO - Optics and Laser Technology
JF - Optics and Laser Technology
M1 - 106363
ER -