| 外腔式光纤Fabry-Perot干涉型高温应变传感器 |
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| 引用本文： | 江毅,贾景善,付雷,邹正峰.外腔式光纤Fabry-Perot干涉型高温应变传感器[J].光学技术,2017,43(5):423-426. |
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| 作者姓名： | 江毅 贾景善 付雷 邹正峰 |
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| 作者单位： | 北京理工大学光电学院 ,北京,100081 |
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| 基金项目： | 国家863项目，国家自然科学基金 |
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| 摘 要： | 介绍了一种外腔式光纤Fabry-Perot干涉型(EFPI)高温应变传感器,传感器是在两段切割平整的单模光纤之间熔接一段空心光纤构成。实验证明,传感器在1000℃以下时能够稳定工作,腔长变化灵敏度为0.17nm/με,应变测量灵敏度可达±1με,线性度高达0.99998。EFPI高温应变传感器结构紧凑,工艺简洁,成本低廉,是一种可靠、优秀的高温应变传感器。
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| 关 键 词： | EFPI干涉仪 高温传感 应变测量 光纤白光干涉测量技术 |
A high-temperature strain sensor based on extrinsic Fabry-Perot interferometer |
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| JIANG Yi,JIA Jingshan,FU Lei,ZOU Zhengfeng.A high-temperature strain sensor based on extrinsic Fabry-Perot interferometer[J].Optical Technique,2017,43(5):423-426. |
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| Authors: | JIANG Yi JIA Jingshan FU Lei ZOU Zhengfeng |
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| Abstract: | A high temperature strain sensor based on the fiber optic extrinsic Fabry-Perot interferometer(EFPI) is presented .A section of hollow capillary is spliced with two sections of cleaved single-mode fibers to form an extrinsic Fabry-Perot cavity .Experimental results show that the sensor can work stably at 1000℃ .The sensitivity of the cavity length change and the strain sensitivity are 0 .17nm/μεand ± 1με,respectively .The linearity is 0 .99998 .The sensor has many advantages ,such as compact in construction ,simple fabricating process and low cost ,which is a reliable and excel-lent high temperature strain sensor . |
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| Keywords: | EFPI high temperature strain fiber optical white-light interferometry |
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