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High sensitivity photonic crystal waveguide sensors

机译：高灵敏度光子晶体波导传感器

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摘要

A theoretical investigation of the sensitivity of an optical liquid sensor, based on photonic crystal waveguide, is carried out. The sensing principle is based on the variation of the effective index of the waveguide induced by analyte refractive index change. The sensor modelling is carried out by using the 3D finite element method. The influence of geometrical parameters on the sensor sensitivity has been investigated. The results show that the sensitivity can be optimized by an appropriate choice of the geometrical parameters and a sensitivity superior to 20 has been achieved, near the cut-off in the slow light region, which is several times higher than that can be achieved with conventional waveguides.
机译：对基于光子晶体波导的光学液体传感器的灵敏度进行了理论研究。感测原理基于由分析物折射率变化引起的波导有效折射率的变化。传感器建模通过使用​​3D有限元方法进行。研究了几何参数对传感器灵敏度的影响。结果表明，可以通过适当选择几何参数来优化灵敏度，并且在慢光区域的截止附近已达到了优于20的灵敏度，这是传统方法所能达到的几倍。波导。

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