新型反谐振反射光波导传感器的研究

为了寻找到性能更好、灵敏度更高的光波导传感器,在传统反谐振反射光波导结构的基础之上,提出了一种新型反谐振反射光波导传感器,对其反射率和传输损耗进行了模拟,并计算了它的灵敏度.结果表明,与传统表面均匀传感型反谐振反射光波导传感器相比,新型传感器直接将待测的样品作为波导层并且采用了周期结构的反共振层,使大部分光束集中在样品中传播,从而降低了传输损耗,提高了传感器的灵敏度,为波导传感器的制作提供了一定的数值参考.

Study of an anti-resonant reflecting optical waveguide sensor

In order to find a more effective and sensitive waveguide sensor,a new kind of structure of anti-resonant reflecting optical waveguide(ARROW) based on the traditional ARROW is proposed.Its reflectivity and transmitted loss are simulated and its sensitivity is calculated.Comparing with traditional surface homogenous sensing ARROW sensors,as waveguide is directly constructed by the sample and a periodic structure is adopted,the beam is mostly confined in the waveguide and the transmitted loss is effectively deduced,then,the sensitivity is greatly improved.