Opt Lett. 2022 Oct 15;47(20):5297-5300. doi: 10.1364/OL.473041.
We demonstrate a plug-in tip sensor with a maximum cross section diameter of only 1 mm for real-time thermal monitoring of a high-density miniature winding coil, which can meet the miniaturization development needs of electromagnetic actuators. Due to the high upconversion luminescence efficiency, tellurite glass with an optimized Er/Yb doping ratio is adhered to the end face of silica fiber for a temperature-sensitive tip. Temperature information is demodulated using the fluorescence intensity ratio technique, yielding a nonlinear response with R up to 0.9978. Within a wide temperature range of 253.55-442.45 K, the tip sensor exhibits good repeatability, excellent stability, high sensitivity of 52.7 × 10K, small absolute error within ±1 K, and fast time response of 2.03 s. It has been successfully proven to be a miniaturized device with strong anti-interference ability for the health management of high-density winding coils.
我们展示了一种插件式尖端传感器，其最大横截面直径仅为 1 毫米，可用于实时监测高密度微型绕组线圈，满足电磁执行器的小型化发展需求。由于上转换发光效率高，将优化的 Er/Yb 掺杂比的碲酸盐玻璃附着在光纤的端面上作为温度敏感尖端。使用荧光强度比技术解调温度信息，得到高达 0.9978 的非线性响应。在 253.55-442.45 K 的宽温度范围内，尖端传感器具有良好的重复性、优异的稳定性、高达 52.7×10K 的高灵敏度、在±1 K 内的小绝对误差和 2.03 s 的快速时间响应。它已被成功证明是一种具有强抗干扰能力的小型化设备，可用于高密度绕组线圈的健康管理。
