圆环谐振腔耦合波导系统的选频和传感特性  

Frequency-selecting and Sensing Characteristics of Ring Cavity Coupled with Waveguide

作　　者：吴丹丹 邓艳[1] 骆志刚 Wu Dandan;Deng Yan;Luo Zhigang(College of Physics and Mechatronic Engineering,Jishou University,Jishou,Hunan 416000,China)

机构地区：[1]吉首大学物理与机电工程学院,湖南吉首416000

出　　处：《应用激光》2021年第1期189-194,共6页Applied Laser

基　　金：吉首大学校级科研项目(Jdy19038);国家自然科学基金项目(61865006);湖南省自然科学基金项目(2019JJ50481);湖南省教育厅优秀青年项目(18B324)。

摘　　要：采用数值模拟和理论分析的方法探究了内嵌金属棒圆环谐振腔耦合波导系统中的选频特性及传感特性。金属棒位置的调节可使系统的透射光谱呈现周期性变化,也可为谐振模式的调控提供新的自由度。另外,系统的灵敏度和品质因数分别达到1 627.5 nm/RIU和37.893 5。研究结果可为高集成度的光开关、传感器、滤波器等器件的研制提供理论基础。The frequency-selecting and sensing properties, in plasmonic system composed of waveguide and ring cavity with embedded metal bar, are numerically and theoretically demonstrated. Modulating the location of metal bar introduces the periodic variation of transmission spectra, which provides a new degree of freedom for controlling the resonant modes. In addition, the sensitivity and figure of merit reach 1 627.5 nm/RIU and 37.893 5, respectively. The results provide theoretical basis for the designing ultracompact optical switch, sensor and filter.

关 键 词：金属-介质 灵敏度 传感 选频 

分 类 号：TN252[电子电信—物理电子学]