材料科学
光学
光纤
光纤传感器
光电子学
表面等离子共振
磁场
表面等离子体激元
表面等离子体子
纤维
局域表面等离子体子
近场和远场
光子晶体光纤
作者
Sijun Weng,Li Pei,Jianshuai Wang,Jingjing Zheng,Tigang Ning
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2018-05-18
卷期号:57 (5): 057107-
标识
DOI:10.1117/1.oe.57.5.057107
摘要
A side-hole fiber surface plasmon resonance (SPR) sensor is proposed and numerically analyzed to solve the cross-sensitivity problem of temperature and magnetic field. In the side-hole fiber SPR sensor, the side-holes I and II are filled with magnetic fluid and a mixture of ethanol–glycerin, respectively, resulting in a loss spectrum with two channels. Each channel has different sensing characteristics. When the external magnetic field intensity increases, the magnetic field sensitivities of channels I and II are 1.098 and −0.018 nm / Oe, respectively. Moreover, with the increasing temperature, the temperature sensitivities of channels I and II are −5.909 and −4.211 nm / ° C, respectively. Therefore, the variations of magnetic field intensity and temperature can be simultaneously measured by detecting resonant wavelengths of channels I and II of side-hole fiber SPR effects, resulting in the influence of temperature in a side-hole fiber SPR magnetic field sensor being eliminated. The side-hole fiber SPR sensor has obvious advantages of compact structure and high sensitivity, and it also has solved the problem of liquid storage glassware to compact the structure of the fiber SPR sensor further.
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