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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。
In order to find an optical waveguide sensor with better performance and higher sensitivity, based on the traditional anti-resonant reflective optical waveguide structure, a new type of anti-resonant reflective optical waveguide sensor is proposed, whose reflectivity and transmission loss are simulated , And calculated its sensitivity. The results show that the new sensor directly uses the sample to be tested as the waveguide layer and adopts the anti-resonant layer of the periodic structure as compared with the conventional surface-uniformly-sensing anti-resonant reflective optical waveguide sensor, so that most of the optical beam propagates in the sample, Thus, the transmission loss is reduced and the sensitivity of the sensor is improved, providing a numerical reference for the manufacture of the waveguide sensor.