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
复制标题
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
中科院分区:
文献类型:
--
作者:
Liang Hong Qin;Liu Bin;Hu Jin Feng
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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