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Magnetic field sensor using the fiber loop ring-down technique and an etched fiber coated with magnetic fluid

机译：磁场传感器采用光纤环形衰减技术和浸有磁性流体的蚀刻纤维

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摘要

The fiber loop ring-down spectroscopy technique is introduced into the evanescent-field-based sensing scheme in order to create a new type of fiber-based magnetic field sensor. As a consequence, the sensitivity and stability of the magnetic field sensing system are significantly enhanced. The sensor head is constructed using a section of a single-mode fiber with its cladding partially etched. The process of fiber etching is described in detail, and the relationship between the diameter of the etched fiber and the etching time is experimentally investigated. After adopting the appropriate size of the etched fiber, the final experimental results show that the magnetic field strength has a well-defined linear relationship with the inverse of the ring-down time tau over a range of 30 mT with a sensitivity of 95.5 ns/mT. (C) 2016 Optical Society of America
机译：为了建立一种新型的基于光纤的磁场传感器，将光纤环衰荡光谱技术引入了基于e逝场的传感方案。结果，显着提高了磁场传感系统的灵敏度和稳定性。传感器头是使用单模光纤的一部分构造的，其包层被部分蚀刻。详细描述了纤维蚀刻的过程，并通过实验研究了蚀刻纤维的直径与蚀刻时间之间的关系。在采用适当尺寸的蚀刻光纤后，最终的实验结果表明，在30 mT范围内，磁场强度与振铃时间tau的倒数具有明确的线性关系，灵敏度为95.5 ns /公吨。 （C）2016美国眼镜学会

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