Optical fiber magnetic field sensor based on single-mode-multimode-single-mode structure and magnetic fluid
Optical fiber magnetic field sensor based on single-mode-multimode-single-mode structure and magnetic fluid
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DOI：
10.1364/ol.38.003999
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发表时间：
2013-10-15
期刊：
影响因子：
3.6
通讯作者：
Xiao, Hai
中科院分区：
文献类型：
--
作者：
Chen, Yaofei;Han, Qun;Xiao, Hai
提出并实现了一种基于单模-多模-单模（SMS）结构和磁流体（MF）的光纤磁场传感器。采用无芯光纤作为多模波导，磁敏介质密封在毛细管中，完全浸没无芯光纤，制成了全光纤磁敏传感器。磁场强度的询问可以通过测量透射光谱的倾角波长偏移或通过检测特定波长处的透射损耗来实现。制作了灵敏度高达905 pm/mT和0.748 dB/mT的示范传感器并进行了研究。提出的设备的设计的理论模型进行了开发和数值模拟。(C)2013年美国光学学会
An optical fiber magnetic field sensor based on the single-mode-multimode-single-mode (SMS) structure and magnetic fluid (MF) is proposed and demonstrated. By using a piece of no-core fiber as the multimode waveguide in the SMS structure and MF sealed in a capillary tube as the magnetic sensitive media, which totally immersing the no-core fiber, an all-fiber magnetic sensor was fabricated. Interrogation of the magnetic field strength can be achieved either by measuring the dip wavelength shift of the transmission spectrum or by detecting the transmission loss at a specific wavelength. A demonstration sensor with sensitivities up to 905 pm/mT and 0.748 dB/mT was fabricated and investigated. A theoretical model for the design of the proposed device was developed and numerical simulations were performed. (C) 2013 Optical Society of America