Numerical simulation of a truncated cladding negative curvature fiber sensor based on the surface plasmon resonance effect  

作　　者：张志超 苑金辉 邱石 周桂耀 周娴 颜玢玢 吴强 王葵如 桑新柱 Zhichao Zhang;Jinhui Yuan;Shi Qiu;Guiyao Zhou;Xian Zhou;Binbin Yan;Qiang Wu;Kuiru Wang;Xinzhu Sang(State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China;Research Center for Convergence Networks and Ubiquitous Services,University of Science&Technology Beijing,Beijing 100083,China;Guangzhou Key Laboratory for Special Fiber Photonic Devices,South China Normal University,Guangzhou 510006,China;Department of Physics and Electrical Engineering,Northumbria University,Newcastle upon Tyne,NE18ST,United Kingdom;Key Laboratory of Nondestructive Test(Ministry of Education),Nanchang Hong Kong University,Nanchang 330063,China)

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Research Center for Convergence Networks and Ubiquitous Services,University of Science&Technology Beijing,Beijing 100083,China [3]Guangzhou Key Laboratory for Special Fiber Photonic Devices,South China Normal University,Guangzhou 510006,China [4]Department of Physics and Electrical Engineering,Northumbria University,Newcastle upon Tyne,NE18ST,United Kingdom [5]Key Laboratory of Nondestructive Test(Ministry of Education),Nanchang Hong Kong University,Nanchang 330063,China

出　　处：《Chinese Physics B》2023年第3期262-269,共8页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.61935007).

摘　　要：A refractive index(RI)sensor based on the surface plasmon resonance effect is proposed using a truncated cladding negative curvature fiber(TC-NCF).The influences of the TC-NCF structure parameters on the sensing performances are investigated and compared with the traditional NCF.The simulation results show that the proposed TC-NCF RI sensor has an ultra-wide detection range from 1.16 to 1.43.The maximum wavelength sensitivity reaches 12400 nm/RIU,and the corresponding R^(2)of the polynomial fitting equation is 0.9999.The maximum and minimum resolutions are 2.56×10^(-5)and 8.06×10^(-6),respectively.In addition,the maximum amplitude sensitivity can reach-379.1 RIU^(-1)when the RI is chosen as 1.43.The proposed TC-NCF RI sensor could be useful in biochemical medicine,environmental monitoring,and food safety.

关 键 词：truncated cladding negative curvature fiber refractive index sensor surface plasmon resonance 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]