Abstract

In this paper, a reliable anti-interference probe based on fluorescence intensity ratio technique is proposed for cryogenic temperature detection in refrigeration process, the sensing unit of which is based on a self-made coreless tellurite optical fiber (TOF) co-doped with Er³⁺/Yb³⁺ ions. The temperature information was demodulated by analyzing the fluorescence spectral changes. In order to meet the needs of practical applications, the dual-curing method was applied to realize the TOF splicing, and the thin-walled silica tube was used to provide robust packaging. For the first time, the anti-cross-sensitive properties of the fluorescent probe under vibration and liquid interference were quantified, and the repeated response deviation was on the order of 10⁻⁵. The actual working capacity of the probe was experimentally investigated by applying it to measuring the circulating exhale and cryogenic equipment, in which a fast time response of about 2.11 s and a small absolute error of 0.80 K were obtained. The probe has good stability and repeatability, and can work stably even in complex environments with vibrations and liquids, showing strong anti-interference ability. In addition, the robust package and easy method make the probe suitable for mass fabrication.

Luminescence probe for temperature sensor based on fluorescence intensity ratio

Hui Li, Yundong Zhang, Lin Shao, ZinMaung Htwe, and Ping Yuan
Opt. Mater. Express 7(3) 1077-1083 (2017)

Multimode interferometric sensor based on the no-core tellurite optical fiber for cryogenic temperature detection

Wei Liu, Dianchang Song, Zhiyuan Yin, Fan Zhang, Bin Li, Xuenan Zhang, Fang Wang, Takenobu Suzuki, Yasutake Ohishi, and Tonglei Cheng
Opt. Express 30(15) 26238-26250 (2022)

Er³⁺/Yb³⁺/Ho³⁺ tri-doped no-core fiber temperature sensor based on fluorescence intensity ratio technology: towards high stability and accurate measurements

Huifang Wang, Zhiyuan Yin, Dianchang Song, Wei Liu, Xue Zhou, Xin Yan, Xuenan Zhang, and Tonglei Cheng
Appl. Opt. 63(10) 2462-2468 (2024)

Optical fiber temperature sensor based on the upconversion fluorescence intensity ratio of NaYF₄:Er³⁺ excited by a 1525-nm laser

Yantang Huang, Senlin Peng, Jinping Liu, Zhuohong Feng, Wenqi Huang, and Tingdi Liao
Appl. Opt. 61(1) 202-207 (2022)

Plug-in tip sensor based on upconversion fluorescence in Er³⁺/Yb³⁺ co-doped tellurite glass for thermal monitoring of a miniature winding coil

Wei Liu, Dianchang Song, Zhiyuan Yin, Fan Zhang, Bin Li, Fang Wang, Xuenan Zhang, Xin Yan, Takenobu Suzuki, Yasutake Ohishi, and Tonglei Cheng
Opt. Lett. 47(20) 5297-5300 (2022)