Wang Haiyang, Yan Xin, Li Shuguang, An Guowen, Zhang Xuenan
College of Information Science and Engineering, Northeastern University, Shenyang 110819, China.
Sensors (Basel). 2016 Oct 8;16(10):1655. doi: 10.3390/s16101655.
A refractive index sensor based on dual-core photonic crystal fiber (PCF) with hexagonal lattice is proposed. The effects of geometrical parameters of the PCF on performances of the sensor are investigated by using the finite element method (FEM). Two fiber cores are separated by two air holes filled with the analyte whose refractive index is in the range of 1.33-1.41. Numerical simulation results show that the highest sensitivity can be up to 22,983 nm/RIU(refractive index unit) when the analyte refractive index is 1.41. The lowest sensitivity can reach to 21,679 nm/RIU when the analyte refractive index is 1.33. The sensor we proposed has significant advantages in the field of biomolecule detection as it provides a wide-range of detection with high sensitivity.
提出了一种基于具有六边形晶格的双芯光子晶体光纤（PCF）的折射率传感器。采用有限元方法（FEM）研究了光子晶体光纤的几何参数对传感器性能的影响。两个光纤芯由两个填充有分析物的气孔隔开，分析物的折射率范围为1.33 - 1.41。数值模拟结果表明，当分析物折射率为1.41时，最高灵敏度可达22,983 nm/RIU（折射率单位）。当分析物折射率为1.33时，最低灵敏度可达21,679 nm/RIU。我们提出的传感器在生物分子检测领域具有显著优势，因为它提供了高灵敏度的宽范围检测。
