Refractive index sensor based on SPR in symmetrically etched plastic optical fibers
Refractive index sensor based on SPR in symmetrically etched plastic optical fibers
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DOI：
10.1016/j.sna.2016.04.064
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发表时间：
2016-08-01
影响因子：
4.6
通讯作者：
Mahdi, M. A.
中科院分区：
文献类型：
--
作者：
Al-Qazwini, Yusser;Noor, A. S. M.;Mahdi, M. A.
在这项工作中，我们制作了一种基于刻蚀塑料光纤的表面等离子体共振传感器，并对其进行了表征。采用的刻蚀方法确保了光纤的几何圆对称性。通过浸泡在不同折射率的传感溶液中对该传感器进行测试，并用光谱仪系统测量了其透过率。传感器在灵敏度和检测精度方面的性能可以通过调整设计参数，如金层厚度、剩余纤维厚度和传感长度来控制。我们通过将光纤总厚度减小到964微米，传感长度为10 mm，并在约55 nm的薄金膜上镀膜，实现了一种适用于水介质传感的灵敏、经济高效且坚固耐用的传感器。该传感器的灵敏度为1600 nm/RIU，半高宽约为154 nm。(C)2016爱思唯尔B.V.保留所有权利。
In this work, we fabricate and characterize a surface plasmon resonance sensor based on etched plastic optical fibers. The etching method used ensures the geometrical circular symmetry of the optical fiber. The sensor was tested by immersion in sensing solutions of different refractive indices and the transmittance is measured using a spectrometer system. The sensor performance in terms of sensitivity and detection accuracy can be controlled by adjusting the design parameters such as gold thickness, residual fiber thickness, and sensing length. We realized a sensitive, cost-effective, and robust sensor suitable for aqueous media sensing by reducing the overall fiber thickness up to 964 mu m with a sensing length of 10 mm coated with a thin gold film of around 55 nm. The demonstrated sensor exhibits a sensitivity of 1600 nm/RIU and a full width at half maximum of around 154 nm. (C) 2016 Elsevier B.V. All rights reserved.