Two-channel photonic crystal fiber based on surface plasmon resonance for magnetic field and temperature dual-parameter sensing

Dongying Wang; Zao Yi; Guolu Ma; Bo Dai; Junbo Yang; Jianfa Zhang; Yang Yu; Chao Liu; Xianwen Wu; Qiang Bian

doi:10.1039/D2CP02778J

Two-channel photonic crystal fiber based on surface plasmon resonance for magnetic field and temperature dual-parameter sensing

Dongying Wang,^a Zao Yi,

*^a Guolu Ma,^a Bo Dai,^a Junbo Yang,^b Jianfa Zhang,

^b Yang Yu,*^bc Chao Liu,

^d Xianwen Wu^e and Qiang Bian

^f

Author affiliations

* Corresponding authors

^a Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
E-mail: yizaomy@swust.edu.cn

^b College of Liberal Arts and Sciences, Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China
E-mail: yuyang08a@nudt.edu.cn

^c State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences, Shanghai, China

^d School of Physics and Electronics Engineering, Northeast Petroleum University, Daqing 163318, China

^e School of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China

^f Institute for Measurement and Sensor Technology, Technical University of Munich, Munich 80333, Germany

Abstract

In this paper, a dual-parameter sensor based on surface plasmon resonance (SPR)-photonic crystal fiber (PCF) is proposed, which can be applied in detecting the magnetic field and temperature. In this sensor, two elliptical channels are designed on both sides of the fiber core. The left channel (Ch 1) is coated with gold film and filled with magnetic fluid (MF) to achieve a response to the magnetic field and temperature using SPR. The right channel (Ch 2) is coated with gold film as well as Ta₂O₅ film to improve the SPR sensing performance. Finally, Ch 2 is filled with polydimethylsiloxane (PDMS) to achieve a response to the temperature. The mode characteristics, structural parameters and sensing performance are investigated by the finite element method. The results show that when the magnetic field is in the range of 50–130 Oe, the magnetic field sensitivities of Ch 1 and Ch 2 are 65 pm Oe⁻¹ and 0 pm Oe⁻¹, respectively. When the temperature is in the range of 17.5–27.5 °C, the temperature sensitivities of Ch 1 and Ch 2 are 520 pm °C⁻¹ and 2360 pm °C⁻¹, respectively. By establishing and demodulating a sensing matrix, the sensor can not only measure the temperature and magnetic field simultaneously but also solve the temperature cross-sensitivity problem. In addition, when the temperature exceeds a certain value, the proposed sensor is expected to achieve dual-parameter sensing without a matrix. The proposed dual-parameter SPR-PCF sensor has a unique structure and excellent sensing performance, which are important for the simultaneous sensing of multiple basic physical parameters.

Physical Chemistry Chemical Physics

Two-channel photonic crystal fiber based on surface plasmon resonance for magnetic field and temperature dual-parameter sensing

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Two-channel photonic crystal fiber based on surface plasmon resonance for magnetic field and temperature dual-parameter sensing

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