激光与光电子学进展, 2016, 53 (7): 071301, 网络出版: 2016-07-08   

偏心光纤倏逝场传感灵敏度的研究 下载: 508次

Sensitivity of Evanescent Field Sensors Based on Eccentric Core Optical Fiber
作者单位
1 黑龙江科技大学电子与信息工程学院, 黑龙江 哈尔滨 150022
2 湖北科技学院电子与信息工程学院, 湖北 咸宁 437100
3 哈尔滨工程大学纤维集成光学教育部重点实验室, 黑龙江 哈尔滨 150001
摘要
利用有限元法对影响偏芯光纤倏逝场传感灵敏度的模场特性和倏逝场特性进行了理论研究与仿真分析。利用瑞利散射机理对偏心光纤倏逝场的分布式传感长度进行了理论计算。研究结果表明,若要在倏逝场传感中获得较高的传感灵敏度,其偏心距离的设计范围为8~10 μm;光纤涂层的折射率应尽量减小;估算偏心光纤倏逝场传感长度大约在16~160 m。
Abstract
The properties of model field and evanescent field are theoretically studied and simulated using finite element method, which have a certain extent effect on the sensitivity of the fiber evanescent field sensors based on eccentric core optical fiber. The distributed sensing length of the fiber evanescent field sensors is also calculated based on the Rayleigh scattering theory. The results show that in order to obtain high sensitivity in evanescent field sensing, the eccentric distance is designed to be about 8~10 μm and the refractive index of fiber coating should be low as soon as possible. The sensing length of the fiber evanescent field sensors is estimated to be 16~160 m.
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刘建霞, 薛丽, 陈宫傣, 李志军. 偏心光纤倏逝场传感灵敏度的研究[J]. 激光与光电子学进展, 2016, 53(7): 071301. Liu Jianxia, Xue Li, Chen Gongdai, Li Zhijun. Sensitivity of Evanescent Field Sensors Based on Eccentric Core Optical Fiber[J]. Laser & Optoelectronics Progress, 2016, 53(7): 071301.

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