An ultra-highly sensitive surface plasmon resonance sensor based on D-shaped optical fiber with a silver-graphene layer

An ultra-highly sensitive surface plasmon resonance sensor based on D-shaped optical fiber with a silver-graphene layer
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基于银石墨烯层D型光纤的超高灵敏表面等离子体共振传感器

DOI:
10.1016/j.ijleo.2017.09.045
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发表时间:
2017-11
期刊:
影响因子:
3.1
通讯作者:
Hu Jin Feng
Hu Jin Feng
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liang Hong Qin;Liu Bin;Hu Jin Feng

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我们提出了一种高灵敏度的表面等离子体共振(SPR)传感器的基础上的D形与银-石墨烯层。传感特性的有限元方法进行了数值分析。在1.42和1.44之间的传感范围内实现了58650 nm/折射率单位(RIU)的超高光谱灵敏度和高线性度,从而作为传感器实现了2 × 10− 6 RIU的高分辨率。详细研究和分析了银层和石墨烯层厚度对传感性能的影响。光纤的D形结构有助于改善相位匹配,石墨烯层可以有效地提高其传感性能。研究结果对设计高性能光纤SPR传感器具有潜在的应用价值。
We propose a highly sensitive surface plasmon resonance (SPR) sensor based on D-shaped with a silver-graphene layer. The sensing characteristics is numerically analyzed by the finite-element method. An ultra-high spectral sensitivity of 58650 nm/refractive index unit (RIU) with high linearity is achieved in the sensing range between 1.42 and 1.44, thereby resulting in a high resolution of 2 × 10−6RIU as a sensor. The influence of thickness of silver and graphene layer on sensing performance have been investigated and analyzed in detail. The D-shaped structure of the fiber helps in improving the phase matching, and the graphene layer can provides enhancing its sensing performance effectively. Results have potential application for designing high-performance optical fiber SPR sensors.
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