论文标题
双谐振垂直访问的光波导传感器
Double Resonant Vertically Accessed Optical Waveguide Sensor
论文作者
论文摘要
我们提出了一种新的波导 - 感应构型，结合了两个效果的优势，即两波干扰和在单个感应设备中的多波干扰。通过三端口光栅从上方垂直访问传感器，并且可以在上调或波导模式下完成其读数。这两个临界信号的叠加会根据制造参数而导致各种传输特性曲线，这些曲线是优化的，以达到增强的灵敏度。通过简单的散射矩阵模型对传感器进行分析，并通过完整的FDTD模拟确认。
We present a new waveguided-sensing configuration combining the advantages of two effects, namely, two-wave interference and multiple-wave interference in a single sensing device. The sensor is accessed vertically from above by means of a three-port grating, and its readout can be accomplished both in an up-reflective or waveguided mode. The superposition of the two outcoming signals results in a variety of transmission characteristic curves depending on fabrication parameters, which are optimized in order to attain enhanced sensitivity. The sensor is analyzed by means of a simple scattering matrix model and confirmed by full FDTD simulations.
