磁流体对光纤倏逝波的作用机理及其磁场传感应用研究

Advanced technology for magnetic field measurement is very important for the development of internet-of-things, especially for the smart grid. Based on the frontier of international research, the requirements of practical applications and some findings from previous studies by other researchers and ourselves, this project is proposed to study the basic physical principles of the interaction between magnetic fluid and optical fibers, as well as their applications in magnetic field sensing applications. We will carry out both the theoretical and experimental studies to discover the action mechanism of magnetic fluid to evanescent wave of optical fibers through the magnetic field controlled orientation and clustering of magnetic nanoparticles that disperse in magnetic fluid, and ahcieve the theoretical analysis mode. Furthermore, a high performance magnetic fluid-infiltrated microstructured optical fiber tilt grating-based magnetic field sensor, together with its demodulation, multiplexing and networking technologies, is proposed to study. It will be designed by combining the advanced microstructured optical fiber technology, fiber grating technology, optofluidic technology and innovitive sensor design ideas. The new technology is expected to be used in the rapidly-developed smart grid systems and other related areas of internet-of-things.

先进的磁场测量技术对物联网特别是智能电网的发展具有重要的推动作用。本项目立足国际研究前沿，面向实际应用需求及在前期研究中发现的共性基础性问题，提出研究磁流体对光纤倏逝波的作用机理及其在磁场传感中的应用。项目通过深入的理论分析，结合具体的实验研究，充分揭示磁流体在磁场作用下通过纳米磁性颗粒的取向和排列形态变化，对光纤倏逝波的作用机制和规律，获得其理论分析模型；在此基础上，结合先进的微结构光纤技术、倾斜光纤光栅技术、光流控技术和创新性的传感器设计理念，研制出具有高集成度、高灵敏度、高安全性和可网络化的内嵌磁流体的微结构光纤倾斜光栅磁场传感器及其解调、复用和阵列化传感技术，达到国际领先技术水平，并逐步用于快速发展的智能电网及其它物联网相关领域。

先进的磁场测量技术对物联网特别是智能电网的发展具有重要的推动作用。本项目立足国际研究前沿，面向实际应用需求及在前期研究和同类研究中发现的共性基础性问题，研究了磁流体对光纤倐逝波的作用机理及其在光纤磁场传感中的应用。通过深入的理论分析，结合新颖的实验设计与精密测量，揭示了磁流体中纳米磁性颗粒在磁场作用下的取向和排列形态通过对光场倏逝波的吸收和散射作用，对光纤中光信号产生影响的作用机制，并在此基础上结合先进的光纤加工与传感器设计，提出并实验获得了多种新型高灵敏度光纤在线磁场传感器。项目研究期间共发表SCI收录论文15篇（被引用51次），授权专利12项(其中4项为发明专利），承办大型国际学术会议3次，发表国际会议邀请报告4次，研究结果获得国内外同行认可，对光纤传感技术的发展及其在智能电网及物联网相关领域的应用产生推动作用。