材料科学
包层(金属加工)
表面等离子共振
折射率
光学
光电子学
光纤传感器
包层模式
表面等离子体子
栅栏
等离子体子
光纤
纤维
保偏光纤
纳米技术
复合材料
纳米颗粒
物理
作者
Sarvesh K. Dubey,Anil Kumar,Awadhesh Kumar,Amit Pathak,Sanjay Srivastava
出处
期刊:Optik
[Elsevier]
日期:2022-02-01
卷期号:252: 168527-168527
被引量:20
标识
DOI:10.1016/j.ijleo.2021.168527
摘要
In this study, we propose a design and simulation of a highly sensitive surface plasmon resonance (SPR) based single-mode D-shaped optical fiber refractive index sensor in the near-infrared (NIR) region. It consists grating structure of silver coated with titanium dioxide (TiO2) and Tin dioxide (SnO2) layer on the core-cladding interface. With the help of the finite element method (FEM), the proposed optical fiber sensors are optimized with various geometrical parameters. Proposed optimized structures are investigated and various performance parameters are calculated. It is found that performance parameters enhance with TiO2/SnO2 coated on Ag grating structure at a particular thickness of TiO2/SnO2. Due to this more generations of surface plasmons take place on metal-metal oxide structures. We find the maximum sensitivity of 15.31 μm / RIU and 9.81 μm / RIU for Ag-TiO2 and Ag-SnO2 grating structure respectively which shows a better result in comparison to the other reported work. So proposed structure may have great potential to enhance the sensing ability of optical fiber-based sensors as compared to the other conventional SPR based optical fiber sensors.
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