超短腔光纤法布里-珀罗低温传感技术研究
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国家自然科学基金项目(No.61735014;No.61927812);陕西省教育厅项目(No.18JS093);西安石油大学研究生创新基金项目(No.YCS20111009;No.YCS20111008)资助。


Research on ultrashort cavity fiber Fabry Perotcryogenic sensing technology
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    摘要:

    针对低温大范围高灵敏温度测量需求,提出一种适用于低温环境测量的光纤法布里-珀罗腔温度传感器,并实验研究传感器的响应特性。超短空气腔法布里-珀罗温度传感器由外径03mm的石英毛细管和单模光纤构成,利用高热膨胀系数的材料作为腔镜的一个反射面提高空气腔的温度灵敏度,理论分析了法布里-珀罗干涉仪的温度传感原理,以及温度灵敏度的影响因素,并分析不同级次对灵敏度的影响。研制了大自由谱低温高灵敏度传感器,实验结果表明,传感器在-40℃至-10℃的温度范围内具有较好的温度响应特性,相应的灵敏度为-2066nm/℃,线性拟合度为09697,理论分辨率为±00005℃。传感器具有体积小、灵敏度高和测量范围大等优点,在低温传感领域具有潜在的应用价值。

    Abstract:

    In order to meet the needs of low temperature,wide range and highly sensitive temperature measurement,an optical fiber Fabry Perot (FP) cavity temperature sensing technology for low temperature environment is proposed,and the response characteristic of the sensor is studied experimentally.The ultrashort air FP cavity sensor consists of a 0.3mm capillary tube and a single mode optical fiber.The material with high thermal expansion coefficient is used as a reflector of the cavity mirror to improve the temperature sensitivity of the sensor.The temperature sensing principle of FP cavity and the influencing factors of temperature sensitivity are analyzed theoretically,and the influence of different orders on sensitivity is analyzed.The experimental results show that the proposed temperature sensor possesses sensitivity of -2.066 nm/℃ in the range of -40℃ to -10℃.The linearity is 0.9697,with a theoretical resolution of .The sensor has the advantages of small volume,high sensitivity and large measurement range,which has potential application value in the fields of low temperature sensing.

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刘钦朋,王春芳,刘望飞,高宏,王安立,李生辉.超短腔光纤法布里-珀罗低温传感技术研究[J].激光与红外,2022,52(3):407~413
LIU Qin-peng, WANG Chun-fang, LIU Wang-fei, GAO Hong, WANG An-li, LI Sheng-hui. Research on ultrashort cavity fiber Fabry Perotcryogenic sensing technology[J]. LASER & INFRARED,2022,52(3):407~413

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  • 最后修改日期:2021-08-25
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  • 在线发布日期: 2022-03-22