光子晶体光纤传感特性研究及解调方案设计
发布时间：2018-08-18 08:20
【摘要】：光子晶体光纤(Photonic Crystal Fiber,PCF)因独特的结构设计和新颖的导光特性,被广泛应用于各种领域。尤其在传感领域中的优良特性,使PCF成为现阶段光纤传感领域的研究热点之一。本文主要针对光子晶体光纤传感特性进行研究:(1)基于光波导横向模耦合理论,设计了一种磁流体填充光子晶体光纤结构,通过优化结构实现了温度/磁场的传感,其中温度敏感系数分别达到0.512nm/℃和0.449nm/℃,磁场敏感系数分别到达-1.927nm/mT与-1.681nm/mT。此研究成果有助于解决复杂环境下温度/磁场的交叉敏感问题。(2)基于光子晶体光纤光栅(Photonic Crystal Fiber Bragg Gate,PCFBG)温度传感特性,通过向PCFBG包层空气孔中选择性填充丙二醇实现温度不敏感传感特性,此温度不敏感PCFBG具有优良应变传感特性。因此,通过级联结构与参数优化可实现温度/应变双参量传感,其中温度补偿的传感通道应变敏感系数达到1.226pm/με。另一常规传感通道温度敏感系数达到13.27pm/℃,应变敏感系数达到1.203pm/με。(3)基于理论研究成果设计了一种光子晶体光纤光栅传感解调方案,该方案主要包括光路单元、信号处理单元和显示单元,通过软件设计实现温度/应变双参量传感解调。
[Abstract]:Photonic crystal fiber (Photonic Crystal) has been widely used in various fields due to its unique structure design and novel light conduction characteristics. Especially in the field of sensing, PCF has become one of the research hotspots in the field of optical fiber sensing. In this paper, the sensing characteristics of photonic crystal fiber are studied: (1) based on the optical waveguide transverse mode coupling theory, a magnetofluid filled photonic crystal fiber structure is designed, and the temperature / magnetic field sensing is realized by optimizing the structure. The temperature sensitivity coefficient reaches 0.512nm/ 鈩，
本文编号：2188909
[Abstract]:Photonic crystal fiber (Photonic Crystal) has been widely used in various fields due to its unique structure design and novel light conduction characteristics. Especially in the field of sensing, PCF has become one of the research hotspots in the field of optical fiber sensing. In this paper, the sensing characteristics of photonic crystal fiber are studied: (1) based on the optical waveguide transverse mode coupling theory, a magnetofluid filled photonic crystal fiber structure is designed, and the temperature / magnetic field sensing is realized by optimizing the structure. The temperature sensitivity coefficient reaches 0.512nm/ 鈩，
本文编号：2188909
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