多模光纤
灵敏度(控制系统)
芯(光纤)
光纤传感器
材料科学
光子晶体光纤
光学
物理
光纤
电子工程
工程类
作者
Y. Ji,Shengli Pu,Weinan Liu,Chencheng Zhang,Jiaqi Fu,shufei han,Simiao Duan,Jing Wang,Mahieddine Lahoubi
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2024-04-24
卷期号:49 (10): 2813-2813
被引量:1
摘要
This work proposes and investigates a bent multimode-no-core-multimode optical fiber structure for vector magnetic field sensing applications. The bent no-core fiber (NCF) serves as the sensing area, and the gold film is deposited on its surface to excite the surface plasmon resonance effect. Due to the strong evanescent field of the unclad and bent NCF, the as-fabricated sensor exhibits a high sensitivity of 5630 nm/RIU in the refractive index range of 1.36–1.39. Magnetic fluid is employed as the magneto-sensitive material for magnetic field sensing, exhibiting a high magnetic field intensity sensitivity of 5.74 nm/mT and a high magnetic field direction sensitivity of 0.22 nm/°. The proposed sensor features a simple structure, low cost, point sensing, and excellent mechanical performance.
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