• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >Surface-plasmon-resonance-based fiber-optic refractive index sensor: sensitivity enhancement
【24h】

Surface-plasmon-resonance-based fiber-optic refractive index sensor: sensitivity enhancement

机译：基于表面等离子体共振的光纤折射率传感器：灵敏度提高

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We have experimentally studied the surface plasmon resonance (SPR)-based fiber-optic refractive index sensor incorporating a high-index dielectric layer using the wavelength interrogation method. Silver and gold have been used as SPR active metals followed by a high-index dielectric layer of silicon. Experimental results predict a redshift in the resonance wavelength with the increase in the refractive index of the sensing layer for a given thickness of the silicon layer. Further, as the thickness of the silicon layer increases, the sensitivity of the sensor increases. The upper limit of the silicon film thickness for the enhancement of the sensitivity has been found to be around 10 nm. The experimental results obtained on sensitivity match qualitatively with the theoretical results obtained using the N-layer model and the ray approach. The increase in sensitivity is due to the increase in the electric field intensity at the silicon-sensing-region interface. In addition to an increase in sensitivity, the silicon layer can be used to tune the resonance wavelength and can protect the metal layer from oxidation and hence can improve the durability of the probe.
机译：我们已经通过实验研究了基于表面等离振子共振（SPR）的光纤折射率传感器，该传感器使用波长查询方法并入了高折射率介电层。银和金已被用作SPR活性金属，随后是硅的高折射率介电层。实验结果预测，对于给定的硅层厚度，谐振波长会随着传感层折射率的增加而发生红移。此外，随着硅层的厚度增加，传感器的灵敏度增加。已经发现用于提高灵敏度的硅膜厚度的上限为约10nm。在灵敏度上获得的实验结果与使用N层模型和射线方法获得的理论结果在质量上匹配。灵敏度的提高是由于硅感测区域界面处电场强度的提高。除了提高灵敏度之外，硅层还可以用于调谐谐振波长，并且可以保护金属层免于氧化，因此可以提高探头的耐用性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号