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| 基于多模干涉和长周期光纤光栅的温度及折射率同时测量 | |
| 引用本文： | 王洁玉,童峥嵘,杨秀峰,曹晔.基于多模干涉和长周期光纤光栅的温度及折射率同时测量[J].中国激光,2012,39(9):905003-92. |
| 作者姓名： | 王洁玉 童峥嵘 杨秀峰 曹晔 |
| 作者单位： | 王洁玉:天津理工大学薄膜电子与通信器件重点实验室及智能计算及软件新技术重点实验室， 天津 300384 童峥嵘:天津理工大学薄膜电子与通信器件重点实验室及智能计算及软件新技术重点实验室， 天津 300384 杨秀峰:天津理工大学薄膜电子与通信器件重点实验室及智能计算及软件新技术重点实验室， 天津 300384 曹晔:天津理工大学薄膜电子与通信器件重点实验室及智能计算及软件新技术重点实验室， 天津 300384 |
| 基金项目： | 天津市自然科学基金(11JCYBJC00100)资助课题。 |
| 摘 要： | 基于多模干涉理论和长周期光纤光栅(LPFG)的传感特性,提出了一种单模-多模-单模(SMS)结构与LPFG级联的光纤传感器,实现了温度和折射率的同时测量。实验结果表明,SMS结构的干涉谱和LPFG对温度和折射率具有不同响应灵敏度,其温度灵敏度分别为0.017nm/℃和0.060nm/℃;SMS结构对折射率不敏感,而LPFG的折射率灵敏度为-35.60nm/RIU(RIU为折射率单位)。因此利用敏感矩阵,实现对温度和折射率的同时测量,得到温度和折射率的最大测量误差分别为±0.59℃和±0.0013。该结构灵敏度高、结构简单,且不易受电磁等干扰。实验结果具有良好的线性度,在生物化学领域应用前景良好。 |
| 关 键 词： | 光纤光学 多模干涉 长周期光纤光栅 温度 折射率 |
| 收稿时间： | 2012/4/12 |
Simultaneous Measurement of Temperature and Refraction Index Based on Multimode Interference and Long-Period Fiber Grating |
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| Wang Jieyu Tong Zhengrong Yang Xiufeng Cao Ye.Simultaneous Measurement of Temperature and Refraction Index Based on Multimode Interference and Long-Period Fiber Grating[J].Chinese Journal of Lasers,2012,39(9):905003-92. | |
| Authors: | Wang Jieyu Tong Zhengrong Yang Xiufeng Cao Ye |
| Affiliation: | Wang Jieyu Tong Zhengrong Yang Xiufeng Cao Ye(Key Laboratory of Film Electronics and Communication Devices and Key Laboratory of Intelligent Computing and Novel Software Technology,Tianjin University of Technology,Tianjin 300384,China) |
| Abstract: | Based on the multimode interference theory and the sensing characteristics of long-period fiber grating (LPFG), a fiber-optic sensor composed of a single mode fiber (SMF)-multimode fiber (MMF)-SMF (SMS) structure and a LPFG is proposed for simultaneous measurement of temperature and refractive index. The experimental results show that the interference spectrum of SMS structure and LPFG have different response sensitivities to temperature and refraction index, and the temperature sensitivity coefficients are 0.017 nm/℃ and 0.060 nm/℃, respectively. The SMS structure is insensitive to refractive index while the refractive index sensitivity coefficient of LPFG is -35.60 nm/RIU. Using the sensitivity matrix, simultaneous measurement of temperature and refractive index is realized. The maximum measurement errors of temperature and refraction index are ±0.59 ℃ and ±0.0013, respectively. With the advantages of high sensitivity, simple structure, immunity to electromagnetic interferences and good linearity, the structure has a excellent application prospect in biochemistry field. |
| Keywords: | fiber optics multimode interference long-period fiber grating temperature refraction index |
| 本文献已被 CNKI 等数据库收录！ | |