Ma Yu, Lv Mingyang, Zhang Yangrui, Zhang Xu, Li Song, Sun Weimin, Lewis Elfed
Appl Opt. 2021 Feb 20;60(6):1660-1666. doi: 10.1364/AO.414041.
A conical tip-shaped plastic optical fiber sensor for gas-liquid flow measurement is described. Experimental results show that a distinctive spike signal occurs before the output signal when using a conventional conical fiber probe, whereas this spike signal was greatly suppressed when a cleaved probe is used. A full simulation is implemented based on a three-dimensional ray-tracing method providing a means of comparison with theoretical analysis. The results show that an appropriately cleaved tip provides a promising method of enhancing the bubble measurement signal-to-noise ratio.
描述了一种用于气液流量测量的锥形尖端塑料光纤传感器。实验结果表明，使用传统锥形光纤探头时，输出信号之前会出现明显的尖峰信号，而使用劈开的探头时，该尖峰信号会得到极大抑制。基于三维光线追踪方法进行了全面模拟，为与理论分析进行比较提供了一种手段。结果表明，适当劈开的尖端提供了一种提高气泡测量信噪比的有前景的方法。
