折射率
材料科学
灵敏度(控制系统)
光学
磁场
光子晶体光纤
功勋
表面等离子共振
光子晶体
光电子学
干扰(通信)
光纤传感器
表面等离子体子
等离子体子
光纤
物理
波长
纳米技术
电信
电子工程
频道(广播)
工程类
纳米颗粒
量子力学
计算机科学
作者
Siyu Yao,Yang Yu,Shangpeng Qin,Dongying Wang,Peiguang Yan,Zhenrong Zhang
出处
期刊:Optics Express
[The Optical Society]
日期:2022-04-28
卷期号:30 (10): 16405-16405
被引量:23
摘要
A photonic crystal fiber utilizing surface plasmon resonance (PCF-SPR) sensor based on refractive index (RI) control of magnetic fluid (MF) is designed. The air holes of the sensor are arranged in a hexagonal shape, and the optical field transmission channels on both sides of the central air hole can effectively confine the energy of the optical field. We use MF as the sensing medium, and coat the inner wall of the central air hole with gold. It can effectively stimulate the SPR effect to achieve the purpose of magneto-refractive modulation. We study the sensing characteristics of the proposed sensor by finite element analysis. The results show that the highest refractive index sensitivity reaches 19520 nm/RIU in the RI range of 1.42-1.435 and the maximum figure of merit (FOM) is 374.3 RIU-1. In addition, the magnetic field and the temperature response characteristics of the designed sensor are also investigated. In the magnetic field range of 50-130 Oe, the magnetic field sensitivity is 590 pm/Oe. In the temperature range of 24.3-144.3 °C, the temperature sensitivity is only -29.7 pm/℃. The proposed sensor has significant advantages such as stable structure, high sensitivity, easy integration, resistance to electromagnetic interference and can be used for weak magnetic magnitude detection. It has wide application prospects in industrial production, military, and medical equipment.
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