卞继城,郎婷婷,俞文杰,孔文.基于马赫-曾德尔干涉的温度和应变同时测量的光纤传感器研究[J].光电子激光,2015,26(11):2169~2174 |
基于马赫-曾德尔干涉的温度和应变同时测量的光纤传感器研究 |
Study of fiber sensor for the simultaneous measurement of temperature and strain based on Mach-Zehnder interferometer |
投稿时间:2015-09-08 |
DOI: |
中文关键词: 光纤光学 光纤传感器 马赫-曾德尔干涉 温度和应变测量 |
英文关键词:fiber optics fiber sensor Mach-Zehnder interferometer (MZI) temperature and strain measurement |
基金项目:国家自然科学基金(61205029)和浙江省自然科学基金(LY15F050004)资助项目 (中国计量学院 光学与电子科技学院,浙江 杭州 310018) |
|
摘要点击次数: 1861 |
全文下载次数: 3 |
中文摘要: |
提出了一种基于马赫-曾德尔干涉的温度和应变 双参数同时测量的光纤传感器,其结构是在单模光纤(SMF)上分别熔接两 个球形结构并在SMF光纤中间熔接一段细芯光纤(TCSMF)。利用光纤的纤芯 模、包层模对温度、应变的灵 敏度差异,通过检测不同级次的干涉谷的特征波长位移变化,结合敏感矩阵实现了对温度、 应变双参数的 同时测量。实验选取位于波长1545.1nm554.8nm处的干涉谷进行温度和应变的同时测量,测 得两个波谷 的温度灵敏度分别为53.86 pm/℃和47.51pm/ ℃,两个波谷的应变灵敏度分 别为0.75 pm/με和1.39pm/με,并且不 同级次干涉波谷的波长位移量与外界温度和应变具有良好的线性度。 |
英文摘要: |
A fiber sensor based on Mach-Zechnder interferometer (MZI) for simultaneous measurement of temperature and strain is proposed in this paper.The fiber sensor is constructed by sandwiching a thin core fiber between two spherical-shaped fibers.By observing the wavelength shifts of different interference dips and using the sensitivity matrix,temperature and st rain can be measured simultaneously,since the core modes and the cladding modes have differe nt sensitivities to these two external parameters.The wavelength dips at 1545.1nm and 1554.8nm are chosen.Experimental results indicate that the temperature sensitivities of t he dips are 53.86pm/℃ and 47.51pm/℃,and the strain sensitivities of the dips are 0.75pm/με and 1. 39pm/με,respectively.The linearity of the experiment results is good. |
查看全文 下载PDF阅读器 |
关闭 |
|
|
|
|
|