Abstract
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 Er3+/Yb3+ 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 R2 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 × 10−4 K−1, 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.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Meng Zhang, Angzhen Li, Jibo Yu, Xiaosong Lu, Shunbin Wang, Elfed Lewis, Gerald Farrell, Libo Yuan, and Pengfei Wang
Opt. Lett. 44(13) 3214-3217 (2019)
Zhiyuan Yin, Wei Liu, Dianchang Song, Yongze Liang, Xue Zhou, Xuenan Zhang, Xin Yan, Yu Qin, Yichun Shen, Zelin Zhang, and Tonglei Cheng
Opt. Express 31(18) 29312-29320 (2023)
Jianfeng Tang, Maojun Sun, Yawen Huang, Jie Gou, Yu Zhang, Guannan Li, Yuan Li, Yuhong Man, and Jun Yang
Opt. Mater. Express 7(9) 3238-3250 (2017)