Research on Magnetic Field Sensing Characteristics of Optical Fiber Devices Based on Sandwich Cascade Structure
Citation
罗奔 (Luo Ben). (2024 年 5 月 31 日). 基于三明治级联结构光纤器件的磁场传感特性研究 (Research on Magnetic Field Sensing Characteristics of Optical Fiber Devices Based on Sandwich Cascade Structure) [硕 士 学 位 论 文 (Master's thesis), 学科（专 业）：光学工程 (Optical Engineering), 指导教师：徐荣辉 副教授 (Advisor: Xu Ronghui, Associate Professor)].
Keywords
- 光纤磁场传感 / Optical fiber magnetic field sensing
- 磁流体 / Magnetic fluid, MF
- 三明治结构级联器件 / Sandwich structure cascading devices
- 磁场 / Magnetic field
- 单模光纤 -空芯光纤 -单模光纤 -空芯光纤 -单模光纤 / SMF-HCF-SMF-HCF-SMF
- SMF-MMF-SMF-HCF-SMF
- 磁场灵敏度 / Magnetic field sensitivity
- 温度灵敏度 / Temperature sensitivity
- 同时测量 / Simultaneous measurement
- 灵敏度矩阵 / Sensitivity matrix
- 解调 / Demodulation
- 交叉灵敏度串扰 / Cross-sensitivity crosstalk
- 干涉倾角 / Interference dip
- 透射谱 / Transmission spectrum
- 光纤传感器 / Optical fiber sensor
- 抗电磁干扰 / Strong resistance to electromagnetic interference
Brief
This master's thesis proposes and experimentally investigates two optical fiber magnetic field sensors based on sandwich cascade structures (SMF-HCF-SMF-HCF-SMF and SMF-MMF-SMF-HCF-SMF) combined with magnetic fluid for magnetic field sensing, with the latter design also explored for simultaneous magnetic field and temperature measurement and cross-sensitivity reduction.
Summary
This master's thesis proposes and experimentally studies two novel optical fiber magnetic field sensors utilizing sandwich cascade structures (SMF-HCF-SMF-HCF-SMF and SMF-MMF-SMF-HCF-SMF) and magnetic fluid. The research investigates their magnetic field sensing capabilities, with the SMF-MMF-SMF-HCF-SMF structure also demonstrating potential for simultaneous magnetic field and temperature measurement with reduced cross-sensitivity.
Origin: