18 May 2018 Numerical analysis of side-hole fiber surface plasmon resonance sensor for simultaneous magnetic field and temperature measurement
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Abstract
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.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Sijun Weng, Sijun Weng, Li Pei, Li Pei, Jianshuai Wang, Jianshuai Wang, Jingjing Zheng, Jingjing Zheng, Tigang Ning, Tigang Ning, } "Numerical analysis of side-hole fiber surface plasmon resonance sensor for simultaneous magnetic field and temperature measurement," Optical Engineering 57(5), 057107 (18 May 2018). https://doi.org/10.1117/1.OE.57.5.057107 . Submission: Received: 10 January 2018; Accepted: 26 April 2018
Received: 10 January 2018; Accepted: 26 April 2018; Published: 18 May 2018
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