包层(金属加工)
材料科学
光子晶体光纤
折射率
曲率
等离子体子
光纤
表面等离子共振
图层(电子)
光学
微结构光纤
光电子学
纤维
全硅纤维
光纤传感器
芯(光纤)
渐变折射率纤维
复合材料
纳米技术
纳米颗粒
物理
数学
几何学
作者
J. Divya,S. Selvendran
出处
期刊:Laser Physics
[IOP Publishing]
日期:2022-10-13
卷期号:32 (11): 116205-116205
标识
DOI:10.1088/1555-6611/ac967f
摘要
Abstract Recently, unique structure fiber enacts a significant role in sensing applications. A novel D-shaped negative curvature fiber based surface plasmon resonance (SPR) sensor is proposed. The design consists of negative curvature solid core fiber surrounded by a cladding composed of double-layer adjoined airholes. An outside layer of the cladding contains semi-circular airholes, and the interior layer has small circular air holes to overwhelm the higher-order modes. The external sensing approach detects changes in the refractive index between 1.33 and 1.37. Employing gold as a plasmonic material, SPR is developed on top of the photonic crystal fiber (PCF). Between the gold layer and the PCF, a small layer of titanium dioxide is placed for binding the plasmonic material to the fiber. And it acts as an adhesive layer. The finite element method is used to perform numerical analyses. After improving the structural parameters, an enhanced sensitivity of 26 000 nm RIU −1 is achieved. Because of its enhanced sensitivity, this sensor is used in a bio-medical application to detect and prevent diseases in the early stage.
科研通智能强力驱动
Strongly Powered by AbleSci AI