偏心光纤倏逝场传感灵敏度的研究
Laser & Optoelectronics Progress(2016)
Abstract
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.
MoreKey words
integrated optics,eccentric core optical fiber,evanescent field,sensitivity
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