| 基于PI湿敏薄膜的分布式光纤Bragg光栅湿度传感器 |
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| 引用本文： | 周怡妃,梁大开,曾捷,刘宏月,孙晓明.基于PI湿敏薄膜的分布式光纤Bragg光栅湿度传感器[J].光电子．激光,2011(11):1597-1601. |
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| 作者姓名： | 周怡妃 梁大开 曾捷 刘宏月 孙晓明 |
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| 作者单位： | 南京航空航天大学机械结构强度与振动国家重点实验室;南京航空航天大学机械结构强度与振动国家重点实验室;南京航空航天大学机械结构强度与振动国家重点实验室;南京航空航天大学机械结构强度与振动国家重点实验室;南京航空航天大学机械结构强度与振动国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(60907038);江苏省自然科学基金资助项目(BK2009370);中国博士后科学基金资助项目(20090461116);江苏省博士后科研资助计划(1001010B);611航空科研基金;南京航空航天大学研究生创新基地(实验室)开放基金资助项目(20100102) |
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| 摘 要： | 研究了基于聚酰亚胺（PI）湿敏薄膜的分布式光纤Bragg光栅（FBG）湿度传感器。传感器利用PI薄膜湿膨胀效应，将湿应变作用于Bragg栅区，从而改变光纤FBG湿度传感器中心波长的原理，实现了对26-98％RH范围内环境相对湿度的监测。通过改进PI湿敏薄膜的制备及涂覆工艺，有效提高了FBG湿度传感器性能，并采取了相应温...
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| 关 键 词： | 光纤Bragg光栅(FBG) 湿度传感器 灵敏度 聚酰亚胺(PI) 分布式监测 |
Research on relative humidity sensor based on distributed optical fiber Bragg grating coated with polyimide moisture sensitive film |
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| ZHOU Yi-fei,LIANG Da-kai,ZENG Jie,LIU Hong-yue and SUN Xiao-ming.Research on relative humidity sensor based on distributed optical fiber Bragg grating coated with polyimide moisture sensitive film[J].Journal of Optoelectronics·laser,2011(11):1597-1601. |
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| Authors: | ZHOU Yi-fei LIANG Da-kai ZENG Jie LIU Hong-yue and SUN Xiao-ming |
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| Affiliation: | Key Laboratory of Vehicle Structure and Control of EMC,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Vehicle Structure and Control of EMC,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Vehicle Structure and Control of EMC,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Vehicle Structure and Control of EMC,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Vehicle Structure and Control of EMC,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China |
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| Abstract: | This paper presents a detailed study on relative humidity sensor based on distributed fiber Bragg grating(FBG) coated with polyimide(PI) as a moisture sensitive film.The wet expansion of PI film as wet strain on the FBG results in the shift of Bragg wavelength.The sensor realizes the relative humidity monitoring of 26%RH-98%RH.The method achieves FBG humidity sensor′s better performance by improving the preparation and coating process of PI film and also compensates the temperature.On this basis,the distributed optical fiber Bragg humidity sensor system is prposed for the requirement of multi-point humidity monitoring.The experiments prove that the method can effectively improve the sensor performance,the humidity sensitivity of the sensor is 15 pm/% RH and the linearity error is less than 2.75%.The sensor also has good repeatability and stability. |
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| Keywords: | fiber Bragg grating(FBG) humidity sensor sensitivity polyimide(PL) distributed monitoring |
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