| 毛细管内嵌微球谐振腔的温度传感特性研究 |
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| 引用本文： | 孙航,刘笑尘,王梓杰,余洋,杨勇,张小贝.毛细管内嵌微球谐振腔的温度传感特性研究[J].应用光学,2021,42(5):926-931. |
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| 作者姓名： | 孙航 刘笑尘 王梓杰 余洋 杨勇 张小贝 |
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| 作者单位： | 上海大学 通信与信息工程学院 特种光纤与光接入网重点实验室，上海 200444 |
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| 基金项目： | 国家自然科学基金（62022053，61875116，61675126）；上海自然科学基金（18ZR1415200）；武汉光电国家实验室开发课题（2018WNLOKF014）；111计划（D20031） |
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| 摘 要： | 对基于毛细管的微球谐振腔耦合器件的耦合机理与温度传感特性进行了研究。微球支持较多的高阶模式，易与石英毛细管模式满足相位匹配条件，因此微球回音壁模式会被激发。使用钛酸钡微球进行了温度传感实验，为进一步提升传感的灵敏度，采用聚甲基丙烯酸甲酯（polymethyl methacrylate，PMMA）微球进行了温度传感实验。实验结果表明，PMMA微球温度传感灵敏度可达83.9 pm/℃，约为钛酸钡微球温度传感灵敏度的8倍，在提升温度传感灵敏度方面具有重要作用。
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| 关 键 词： | 光纤光学 微球谐振腔 石英毛细管 回音壁模式 温度传感 |
| 收稿时间： | 2021-04-14 |
Temperature sensing characteristics of a microsphere resonator embedded in a capillary |
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| Institution: | Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China |
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| Abstract: | The coupling mechanism and temperature sensing characteristics based on the micro-sphere resonant cavity coupled apparatus embedded in capillary were investigated. The micro-sphere support the high-order modes, which is easy to meet the phase matching condition with the modes in the quartz capillary, thus the mode of micro-sphere echo wall will be excited. The temperature sensing of a barium titanate micro-sphere was tested. A polymethylmethacrylate (PMMA) micro-sphere was adopted to carry out the temperature sensing experiment for further enhancing the sensing sensitivity. The experimental results show that the temperature sensing sensitivity of PMMA micro-sphere can reach to 83.9 pm/℃, about eight times of that by the barium titanate micro-sphere, which plays an important role for improving the temperature sensing sensitivity. |
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