Photonic Crystal Fiber High Sensitivity Magnetic Field and Temperature Sensor Based on Surface Plasma Resonance Effect and Defect Coupling

Chenghao, 朱晟昦 Zhu; Ce, 谭 策 Tan; Yan, 王 琰 Wang; Yuan, 高 源 Gao; Bicheng, 董碧成 Dong; Hanlin, 马翰林 Ma; Hai, 刘海 Liu

doi:10.3788/cjl201744.0310001

Cited by 1 publication

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“…In 2017, Zhu et al proposed a photonic crystal fiber temperature and magnetic field dual-parameter sensor based on uniformly symmetrically arranged three-layer regular hexagonal pores. The temperature sensitivity of the sensor is up to −1.575 nm/ • C and the magnetic field sensitivity is up to 4.333 µm/T [18]. The researchers have improved the sensitivity of the sensor and increased the function of the sensor by optimizing the structural parameters and using different filling liquids.…”

Section: Introductionmentioning

confidence: 99%

A Highly Magnetic Field Sensitive Photonic Crystal Fiber Based on Surface Plasmon Resonance

Huang

Zhang

et al. 2020

Sensors

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A novel magnetic field sensor comprising a photonic crystal fiber (PCF) is designed and investigated based on surface plasmon resonance (SPR). We use finite element analysis in order to analyze the sensing characteristics of the magnetic field sensor. The simulation results show that the sensor is very sensitive to the change of refractive index and has good linearity in the refractive index range from 1.43–1.45. The thickness of the metal film and the metal material has great influence on the resonance wavelength and the peak of the loss spectrum, the diameter of the central air hole will affect SPP excitation. When the thickness of gold layer is 50 nm, the refractive index sensitivity is 4125 nm/RIU in the refractive index range from 1.43–1.45. Using the designed sensor for magnetic field sensing, the loss spectrum is red-shifted with the increase of the magnetic field, the highest magnetic field sensitivity can reach 61.25 pm/Oe in the range from 50 Oe to 130 Oe. The sensor not only has high sensitivity of refractive index, but it can also realize accurate measurement of magnetic field. It has huge application potential in complex environment, remote sensing, real-time monitoring, and other fields.

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Section: Introductionmentioning

confidence: 99%