Li Huibin, Zhao Chuanzhen, Tian Ke, Chi Kai, Yu Jibo, Lewis Elfed, Farrell Gerald, Wang Pengfei
Opt Lett. 2024 Aug 1;49(15):4282-4285. doi: 10.1364/OL.531953.
In this Letter, we demonstrate a micro-displacement sensor based on a balloon-shaped fiber surface nanoscale axial photonic (SNAP) microresonator. The SNAP microresonator is fabricated by fiber bending to introduce nanoscale effective radius variations (ERVs) on the fiber surface. Displacement measurement based on the balloon-shaped SNAP microresonator is realized based on the ERV modulation resulting from the change in the bending radius of the balloon-shaped structure. An advantage of this approach is that the displacement measurement range is not limited to the axial length of the SNAP region. The experimental results show that the displacement measurement range of the balloon-shaped fiber SNAP microresonator can reach 2500 µm and that the minimum measurement resolution is 0.1 µm. This large-range, high-resolution, and low-cost micro-displacement sensor has the potential to be a promising candidate in high-precision displacement measurement applications.
在本信函中，我们展示了一种基于气球形光纤表面纳米级轴向光子（SNAP）微谐振器的微位移传感器。SNAP微谐振器通过光纤弯曲制造，以在光纤表面引入纳米级有效半径变化（ERV）。基于气球形SNAP微谐振器的位移测量是基于气球形结构弯曲半径变化引起的ERV调制实现的。这种方法的一个优点是位移测量范围不限于SNAP区域的轴向长度。实验结果表明，气球形光纤SNAP微谐振器的位移测量范围可达2500 µm，最小测量分辨率为0.1 µm。这种大范围、高分辨率且低成本的微位移传感器有潜力成为高精度位移测量应用中的一个有前景的候选者。
