The improvement of temperature sensitivity by controlling the thermal expansion coefficient of no-core fiber

Wang Z.; Xue Q.; Zhao S.Wang P.Yang H.Sun X.

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The improvement of temperature sensitivity by controlling the thermal expansion coefficient of no-core fiber

机译：The improvement of temperature sensitivity by controlling the thermal expansion coefficient of no-core fiber

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? 2022 Elsevier Inc.In this paper, a liquid sealed temperature sensor is assembled based on single-mode-no-core-single-mode (SNCS) optical fiber structure. Theoretical calculations and experiments verify the sensing characteristics of this structure. The structure improves the temperature sensitivity to ?355 pm/°C by encapsulating an organic solvent with large thermal optical coefficient and using packaging material with large thermal expansion coefficient. The theoretical results are in good agreement with the experimental results. Theoretical simulations are completed on MATLAB using far from the cut-off condition. The SNCS structure is encapsulated in a microfluidic chamber by applying microfluidic processing technology. The axial thermal expansion coefficient of the no-core fiber (NCF) is increased and radial thermal expansion coefficient is suppressed by the polydimethylsiloxane (PDMS) mold stretching NCF to improve the temperature sensitivity. The enhancement effect of PDMS stretching NCF on temperature sensitivity is verified by contrast experiment. Due to the wrapping of PDMS, the sensor has strong resistance to mechanical damage and external interference.

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《Optical fiber technology》 |2022年第12期|1.1-1.7|共7页
作者
Wang Z.; Xue Q.; Zhao S.Wang P.Yang H.Sun X.;
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作者单位

Henan Key Laboratory of Laser and Opto-electric Information Technology School of Electrical and Information Engineering Zhengzhou University||Institute of Intelligent Sensing Zhengzhou University;

Henan Key Laboratory of Laser and Opto-electric Information Technology School of Electrical and Information Engineering Zhengzhou University;

Henan Key Laboratory of Laser and Opto-electric Information Technology School of Electrical and Information Engineering Zhengzhou UniversityHenan Key Laboratory of Laser and Opto-electric Information Technology School of Electrical and Information Enginee;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Optical fiber sensor; SNCS microfluidic chip; Temperature sensor; Thermal expansion coefficient; Thermal optical coefficient;

The improvement of temperature sensitivity by controlling the thermal expansion coefficient of no-core fiber

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