Opt Lett. 2018 Jun 1;43(11):2539-2542. doi: 10.1364/OL.43.002539.
This Letter demonstrates the application of polymer optical fibers (POFs) damaged by the fiber fuse effect to curvature sensing and dynamic angular monitoring. The curvature sensing performance using the fused-POF is compared to POF without the fuse effect. Both POFs are submitted to angles of up to 90 deg in flexion/extension cycles with angular velocities ranging from 0.48 rad/s to 5.61 rad/s. The fused POF is found to show higher performance with respect to sensitivity, correlation coefficient with linear regression, and hysteresis. For instance, at the angular velocity of 0.48 rad/s, the fused POF shows >3 times higher sensitivity and significantly lower hysteresis than those of the non-fused POF. In addition, the fused POFs have lower cross-sensitivity and hysteresis variations on the tests with different angular velocities. These results indicate that the fused POFs are potential candidates to develop curvature sensors with various advantages over non-fused POFs, for applications such as gait analysis and wearable robotics.
这封信件展示了光纤熔接效应损坏的聚合物光纤（POF）在曲率传感和动态角度监测方面的应用。比较了使用熔接 POF 的曲率传感性能和没有熔接效应的 POF。这两种 POF 都在弯曲/拉伸循环中承受了高达 90 度的角度，角速度范围从 0.48 rad/s 到 5.61 rad/s。结果发现，与非熔接 POF 相比，熔接 POF 在灵敏度、线性回归的相关系数和滞后性方面具有更高的性能。例如，在角速度为 0.48 rad/s 时，熔接 POF 的灵敏度比非熔接 POF 高出 3 倍以上，滞后性明显更低。此外，在不同角速度的测试中，熔接 POF 的交叉灵敏度和滞后性变化更小。这些结果表明，熔接 POF 是开发曲率传感器的潜在候选材料，与非熔接 POF 相比具有多种优势，可应用于步态分析和可穿戴机器人等领域。
