D型环光子晶体光纤表面等离子体共振传感器  

D-ring shaped photonic crystal fiber surface plasmon resonance sensor

作　　者：刘旭安[1] 杨克成 胡新广 姜小刚 罗伟漩 陈达如 LIU Xu-an;YANG Ke-cheng;HU Xin-guang;JIANG Xiao-gang;LUO Wei-xuan;CHEN Da-ru(School of Information Engineering,Huangshan University,Huangshan 245041,China;College of Teacher Education,Quzhou University,Quzhou 324000,China;Hangzhou Institute of Advanced Studies,Zhejiang Normal University,Hangzhou 311231,China)

机构地区：[1]黄山学院信息工程学院,安徽黄山245041 [2]衢州学院教师教育学院,浙江衢州324000 [3]浙江师范大学杭州高等研究院,浙江杭州311200

出　　处：《激光与红外》2024年第5期835-840,共6页Laser & Infrared

基　　金：安徽省教育厅高校自然科学重点研究项目(No.2022AH051958);黄山学院校级人才基金启动项目(No.2020xkjq015);大学生创新创业训练计划项目(No.2210375103);黄山学院校级质量工程教学研究项目(No.2022JXYJ36)资助。

摘　　要：提出了一种中红外波段宽范围低折射率检测的D型环双芯光子晶体光纤表面等离子体共振传感器。该结构为一个D型环,并在其内外表面都沉积一层金属层。采用全矢量有限元方法分析了该传感器的性能。结果表明,该传感器可以在中红外波段实现低折射率传感,并具有高传感灵敏度特性。分析物的折射率可检测范围为1.20~1.38,平均波长灵敏度和最大波长灵敏度可分别达到13717 nm/RIU和21150 nm/RIU,分辨率可达到1.94×10^(-5) RIU。该传感器可在化学、生物以及环境检测等领域有重要的应用。In this paper,a wide range of low refractive index(RI)detection surface plasmon resonance(SPR)sensors based on D-ring-shaped side double-core photonic crystal fiber in the mid-infrared band is proposed.A metal layer is deposited on both the inner and outer surfaces of the D-ring.The full vector finite element method is used to analyze the performance of the sensor,and its sensing characteristics are studied.The results show that the sensor can achieve low and high external refractive index sensing sensitivity in the mid-infrared band.The detectable refractive index range of the analyte is 1.20~1.38,and the average wavelength sensitivity and maximum wavelength sensitivity can reach 13717 nm/RIU and 21150 nm/RIU respectively,with a resolution of 1.94×10^(-5) RIU.The designed sensor plays an important role in the fields of chemical,biological,and environmental detection.

关 键 词：光纤传感器 光子晶体光纤 表面等离子体共振 波长灵敏度 

分 类 号：O436[机械工程—光学工程] TP242.44[理学—光学]