中国激光, 2018, 45 (6): 0610002, 网络出版: 2018-07-05   

采用TiO2薄膜增强光子晶体光纤表面等离子体共振生物传感器灵敏度的建模分析 下载: 1261次

Enhancement of Sensitivity of Photonic Crystal Fiber Surface Plasmon Resonance Biosensor Using TiO2 Film
作者单位
燕山大学电气工程学院, 河北 秦皇岛 066004
摘要
提出一种采用TiO2膜增强双纤芯单通道光子晶体光纤表面等离子体共振生物传感器灵敏度的设计方案:在传感器银膜表面增加一层TiO2薄膜,不仅可以隔绝氧气,防止银氧化,而且可提高传感器的灵敏度;采用全矢量有限元法数值分析传感器的耦合特性及其性能。结果表明,在待测介质折射率为1.33~1.38时,待测介质折射率与传感器的共振波长呈线性关系,线性相关度为0.9806,传感器的平均灵敏度为4200 nm·RIU -1。此外,进一步分析了光子晶体光纤空气孔大小、银膜厚度、TiO2厚度等参数对传感器性能的影响。结果表明,改变结构参数可以优化生物传感器的输出光谱、改善传感器的性能。
Abstract
A dual core single channel photonic crystal optical fiber surface plasma resonance biosensor based on TiO2 film is proposed to enhance the sensitivity. A layer of TiO2 film is added on the surface of the sensor silver film, which can isolate oxygen to prevent the oxidation of silver and improve the sensitivity of the sensor. The coupling characteristics and performance of the sensor are numerically analyzed based on the full vector finite element method. It is shown that there is a highly linear relationship between the analyte refractive index and the resonant wavelength of the sensor in the sensing range of 1.33-1.38, the adjusted linear correlation value is 0.9806, and the average sensitivity is 4200 nm·RIU -1. In addition, the effects of photonic crystal fiber air hole size, silver film thickness, TiO2 thickness and other parameters on the performance of the sensor are further carried out. The result shows that changing the structure parameters can optimize the output spectrum of the biosensor and improve the sensor performance.

童凯, 党鹏, 汪梅婷, 王福成, 孙家儒, 王允轩. 采用TiO2薄膜增强光子晶体光纤表面等离子体共振生物传感器灵敏度的建模分析[J]. 中国激光, 2018, 45(6): 0610002. Kai Tong, Peng Dang, Meiting Wang, Fucheng Wang, Jiaru Sun, Yunxuan Wang. Enhancement of Sensitivity of Photonic Crystal Fiber Surface Plasmon Resonance Biosensor Using TiO2 Film[J]. Chinese Journal of Lasers, 2018, 45(6): 0610002.

本文已被 8 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!