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纳流通道-谐振腔耦合结构测量荧光物质微位移

李霖伟 陈智辉 杨毅彪 费宏明

李霖伟, 陈智辉, 杨毅彪, 费宏明. 纳流通道-谐振腔耦合结构测量荧光物质微位移[J]. 中国光学, 2021, 14(1): 145-152. doi: 10.37188/CO.2020-0076
引用本文: 李霖伟, 陈智辉, 杨毅彪, 费宏明. 纳流通道-谐振腔耦合结构测量荧光物质微位移[J]. 中国光学, 2021, 14(1): 145-152. doi: 10.37188/CO.2020-0076
LI Lin-wei, CHEN Zhi-hui, YANG Yi-biao, FEI Hong-ming. Nanofluidic channel-resonant cavity structure for measuring micro-displacement of fluorescent substances[J]. Chinese Optics, 2021, 14(1): 145-152. doi: 10.37188/CO.2020-0076
Citation: LI Lin-wei, CHEN Zhi-hui, YANG Yi-biao, FEI Hong-ming. Nanofluidic channel-resonant cavity structure for measuring micro-displacement of fluorescent substances[J]. Chinese Optics, 2021, 14(1): 145-152. doi: 10.37188/CO.2020-0076

纳流通道-谐振腔耦合结构测量荧光物质微位移

doi: 10.37188/CO.2020-0076
基金项目: 国家自然科学基金资助项目(No. 11674239,No. 61575139,No. 61575138);山西省青年拔尖人才支持计划;三晋英才支持计划
详细信息
    作者简介:

    李霖伟(1994—),男,山西晋中人,硕士研究生,2017年于太原科技大学获得学士学位,现就读于太原理工大学新型传感器与智能控制教育部/山西省重点实验室光学工程专业,主要从事微纳光子学方面的研究。E-mail:1726393868@qq.com

    陈智辉(1984—),男,山西太原人,博士,教授,博士生导师,2006 年于北京邮电大学获得学士学位,2012年于瑞典皇家工学院获得博士学位,现任职于太原理工大学新型传感器与智能控制教育部/山西省重点实验室,主要从事微纳光子学方面的研究。E-mail:huixu@126.com

  • 中图分类号: TN815

Nanofluidic channel-resonant cavity structure for measuring micro-displacement of fluorescent substances

Funds: Supported by National Natural Science Foundation of China (No. 11674239, No. 61575139, No. 61575138); Program for the Top Young Talents of Shanxi Province; Program for the Sanjin Outstanding Talents of China
More Information
  • 摘要: 本文提出了一种纳流通道-谐振腔耦合结构,用于实现对荧光物质微位移的检测。在本文中,首先,使用时域有限差分法,研究了量子点偏振态及结构参数对荧光与结构耦合效果的影响,进而对结构进行优化;然后,通过测量耦合结构输出光功率的变化,实现对荧光物质微位移的检测;最后,对影响传感灵敏度的因素进行研究。结果表明,相比传统方法,纳流通道-谐振腔耦合结构的折射率处于2.8~3.3之内时,该结构都可以实现对荧光物质微位移的高精度准确传感,并且通过减小纳流通道与谐振腔的间距可进一步提高传感灵敏度。
  • 图  1  纳流通道-谐振腔耦合结构二维模型图

    Figure  1.  Two-dimensional model diagram of a nanofluidic channel-resonant cavity structure

    图  2  微位移检测原理图

    Figure  2.  Schematic diagram of micro-displacement detection

    图  3  偶极子光源偏振方向不同时的耦合效果曲线和电场分布图

    Figure  3.  Coupling effect curves and electric field distributions of dipole source with different polarization directions

    图  4  纳流通道及下波导与谐振腔间距不同时的耦合效果曲线

    Figure  4.  Coupling effect curves when the distance between the microfluidic channel, the lower waveguide and the resonant cavity are different

    图  5  不同谐振腔大小时的耦合效果曲线

    Figure  5.  Coupling effect curves when the cavity size is different

    图  6  纳流通道参数不同时的耦合效果曲线

    Figure  6.  Coupling effect curves when the microfluidic channel parameters are different

    图  7  不同量子点位置时端口2的光功率曲线

    Figure  7.  Optical power curves at port 2 when the quantum dot position changes

    图  8  量子点处于不同位置时的电场分布

    Figure  8.  Electric field distributions when quantum dots are in different positions

    图  9  量子点与结构中心水平距离d4变化时端口2的峰值功率曲线

    Figure  9.  Peak power curve of port 2 when the horizontal distance d4 between the quantum dot and the center of the structure changes

    图  10  结构间距不同,量子点与结构中心水平距离d4变化时端口2的峰值功率曲线

    Figure  10.  Peak power curves of port 2 varying with d4, the horizontal distance between the quantum dot and the center of the structure, at different structure spacing

    图  11  不同结构折射率时,量子点与结构中心水平距离d4变化时端口2的峰值功率曲线

    Figure  11.  Peak power curves of port 2 varying with d4, the horizontal distance between the quantum dot and the center of the structure, at different refractive indexs

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出版历程
  • 收稿日期:  2020-04-26
  • 修回日期:  2020-05-12
  • 网络出版日期:  2020-12-25
  • 刊出日期:  2021-01-25

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