Multi-hole fiber based surface plasmon resonance sensor operated at near-infrared wavelengths
Multi-hole fiber based surface plasmon resonance sensor operated at near-infrared wavelengths
复制标题
在近红外波长下工作的基于多孔光纤的表面等离子体共振传感器
DOI：
10.1016/j.optcom.2013.10.015
复制
发表时间：
2014-02-15
影响因子：
2.4
通讯作者：
Yuan, Libo
中科院分区：
文献类型：
--
作者：
Gao, Di;Guan, Chunying;Yuan, Libo
提出了一种基于单模光纤的表面等离子体共振（SPR）传感器。一层薄薄的金薄膜和一层二氧化钛薄膜沉积在孔的壁上。由于TiO2的高折射率，该传感器可以工作在近红外（FR）波长。基于有限元法对传感器的特性进行了数值研究。数值结果表明，通过改变金层和TiO2层的厚度，SPR传感器的光损耗谱可以很容易地调谐。可实现2.7 x 10（-5）的折射率分辨率（灵敏度S接近370/RIU）。(c) 2013 Elsevier B.V.版权所有
We propose a surface plasmon resonance (SPR) sensor based on a single mode optical fiber with six air holes. A thin gold film and a TiO2 film aiare deposited on the walls of an holes. Due to high refractive index of TiO2 the proposed sensor can operate at near-infrared (FR) wavelengths. The characteristics of the sensor were numerically investigated based on the finite-element method (FEM). The numerical results indicate that the optical loss spectrum of SPR sensor can be tuned easily by changing the thicknesses of gold and TiO2 layers. The refractive-index resolution of 2.7 x 10(-5) (sensitivity S approximate to 370/RIU) for aqueous analytes can be achieved. (c) 2013 Elsevier B.V. All rights reserved.