Department of Optoelectronics, Silesian University of Technology, 2 Krzywoustego Str., 44-100 Gliwice, Poland.
Sensors (Basel). 2023 Jul 2;23(13):6092. doi: 10.3390/s23136092.
The paper presents theoretical analyses and experimental investigations of broadband differential interference in planar gradient waveguides made via K-Na ion exchange in BK-7 glass. This technology, due to its large polarimetric dispersion, is especially useful for applications in differential interferometry. We discuss the influence of technological parameters on the operation characteristics of the structure in terms of sensor applications. The refractive index variation in the measured external surroundings affects the modal properties of TE and TM modes and the spectral distribution at the output of the differential interferometer. The optical system described in this work has been designed specifically for use in biological systems where variations in the index of refraction need to be measured.
本文对通过 BK-7 玻璃中的 K-Na 离子交换制作的平面梯度波导中的宽带差分干涉进行了理论分析和实验研究。由于该技术具有较大的偏振色散，因此特别适用于差分干涉测量中的应用。我们根据传感器应用讨论了工艺参数对结构工作特性的影响。测量外部环境中的折射率变化会影响 TE 和 TM 模式的模态特性以及差分干涉仪输出处的光谱分布。本文所述的光学系统专门用于需要测量折射率变化的生物系统。
