Ju Yao, Zhang Wei, Yang Chao, Zhang Shu-Lin, Ding Xi, Wang Shu-Tong, Zhou Hao, Feng Guo-Ying, Zhou Shou-Huan
Opt Express. 2018 Nov 26;26(24):31889-31897. doi: 10.1364/OE.26.031889.
We propose and demonstrate a novel flexible and elastic vibration-displacement fiber sensor with a doped polydimethylsiloxane (PDMS) micro-fiber based on model interference. High resolution three-dimensional displacement measurement is achieved through monitoring the output pattern and variation of power. The sensor with a length of about 200 μm reveals frequency range from 50 Hz to 14 kHz, covering all the human voice frequency, with greatly enhanced high signal to noise ratio (SNR) reaching up to 66 dB. This work suggests a simple structure, small size and low cost fiber-based convenient way to achieve a multifunctional sensing applications including human motion detection.
我们提出并展示了一种基于模型干涉的新型柔性弹性振动位移光纤传感器，该传感器采用掺杂聚二甲基硅氧烷（PDMS）微纤维。通过监测输出模式和功率变化实现了高分辨率三维位移测量。长度约为200μm的该传感器频率范围为50Hz至14kHz，覆盖了所有人类语音频率，具有高达66dB的极大增强的高信噪比（SNR）。这项工作提出了一种结构简单、尺寸小且成本低的基于光纤的便捷方法，以实现包括人体运动检测在内的多功能传感应用。
