Liang Haidong, Wang Xianfan, Tian Ke, Yang Wenlei, Lewis Elfed, Wang Pengfei
Appl Opt. 2019 Apr 20;58(12):3209-3213. doi: 10.1364/AO.58.003209.
The paper describes a multimode-interference-effect-based single-mode-multimode-single-mode (SMS) fiber optic sensing system for wide-range displacement monitoring on an Ilizarov orthopedic external fixation device. Displacement measurement is implemented as the uniform extension of a spring, which is connected to an SMS optical fiber displacement sensor, allowing full displacement characterization. SMS fiber structures are used together with a macrobending-fiber-based interrogation system to measure temperature perturbation and hence eliminate its effect on the displacement measurement. Transmission spectra are measured, achieving a displacement measurement range of 110 mm with maximum sensitivity of -53 pm/mm and a resolution of 500 μm. The all-fiber sensing system has facilitated a clinical device with a wide displacement range operating in real-time when attached to the Ilizarov apparatus.
本文描述了一种基于多模干涉效应的单模-多模-单模（SMS）光纤传感系统，用于在伊利扎罗夫骨科外固定装置上进行大范围位移监测。位移测量通过连接到SMS光纤位移传感器的弹簧的均匀拉伸来实现，从而能够全面表征位移。SMS光纤结构与基于宏弯曲光纤的询问系统一起使用，以测量温度扰动，从而消除其对位移测量的影响。测量了传输光谱，实现了110毫米的位移测量范围，最大灵敏度为-53皮米/毫米，分辨率为500微米。这种全光纤传感系统使得一种临床设备在连接到伊利扎罗夫装置时能够实时在宽位移范围内运行。
