飞秒刻写光纤F-P腔级联FBG传感特性研究

发布时间：2018-06-14 09:21

本文选题：飞秒加工 + 光纤F-P腔　；参考：《仪器仪表学报》2017年09期

【摘要】：提出了一种飞秒刻写光纤法布里-珀罗(F-P)腔级联切趾布拉格光纤光栅(FBG)的微结构传感器并研究了该传感器的温度与应变传感特性。该微结构传感器光谱稳定性良好,监测时长2 h内FBG波长最大漂移量为0.009 nm,功率最大漂移量为0.015 d B,F-P腔波长最大漂移量为0.018 nm,功率最大漂移量为0.072 d B。当应变由0με增至450με再减回0με时,该微传感器FBG特征峰先右移再左移,波长变化0.530 4 nm,应变灵敏度约1.17 pm/με,线性度高于0.99;光纤F-P腔特征谷波长变化0.491 1 nm,应变灵敏度约1.10 pm/με,线性度高于0.90。当温度由50℃升至200℃再降回50℃时,FBG特征峰先右移再左移,波长变化约1.418 nm,应变灵敏度约10.09 pm/℃,线性度高于0.95;光纤F-P腔特征谷波长变化约1.578 nm,应变灵敏度约10.53 pm/℃,线性度高于0.98。所提出的微结构传感器是解决单根光纤双参数测量的有效手段,同时对复杂环境下的多参数耦合测量与解耦也具有重要的参考价值。
[Abstract]:A femtosecond optical fiber Fabri Perot (F-P) cavity cascaded Prague fiber Bragg grating (FBG) sensor is proposed. The sensor's temperature and strain sensing characteristics are studied. The micro structure sensor has good spectral stability. The maximum drift of FBG wavelength is 0.009 nm and the maximum power drift amount is 0.015 D in the monitoring time of 2 h. B, the maximum drift of the wavelength of F-P cavity is 0.018 nm, and the maximum power drift is 0.072 D B.. When the strain is increased from 0 to 450 um to 0 um, the FBG characteristic peak of the micro sensor first moves to the right and then left, the wavelength changes 0.5304 nm, the strain sensitivity is about 1.17 pm/ Mu and the linearity is higher than 0.99; the characteristic Valley wavelength of the optical fiber F-P cavity is 0.4911 nm and strain spirit. When the sensitivity is about 1.10 pm/ um, the linearity is higher than 0.90. when the temperature rises from 50 C to 200 c and then back to 50 C, the characteristic peak of FBG is moved to the right and then left, the wavelength changes about 1.418 nm, the strain sensitivity is about 10.09 pm/ and the linearity is higher than 0.95, the wavelength of the characteristic valley of the optical fiber F-P cavity is about 1.578 nm, the strain sensitivity is about 10.53 pm/, and the linearity is higher than 0.98. The output micro structure sensor is an effective means to solve the double parameter measurement of single fiber. It also has important reference value for multi parameter coupling measurement and decoupling in complex environment.
【作者单位】：北京信息科技大学;北京信息科技大学光电信息与仪器北京市工程研究中心;现代测控技术教育部重点实验室;北京信息科技大学光电测试技术北京市重点实验室;
【基金】：教育部“长江学者和创新团队”发展计划(IRT-16R07) 北京市教委2015年度创新能力提升计划(TJSHG201510772016) 光电信息与仪器北京市工程研究中心开放课题(GD2016008)项目资助
【分类号】：TP212

【相似文献】