摘要
通过SPP(表面等离子体激元)的优越特性分析了楔形波导SPP的透射特性,设计了嵌有光栅的楔形等离子体波导结构。对SPP激发的分析采用衍射光栅耦合的方式,通过改变金属薄膜厚度以及入射光角度得出其结构特性。结果表明:金属薄膜厚度的减少会导致透射带宽迅速降低,透射率也随之下降;而入射光角度的改变会导致透射光效率的变化。模拟了楔形波导结构的表面等离子体,得到了薄膜厚度的变化透射曲线和入射光角度透射率,得出了透射率变化图。研究结果对半导体设备的纳米等离子激元耦合具有一定的意义。
The transmission characteristics of the wedge-shaped SPP waveguide are analyzed through SPP superior characteristics. In this paper, we design the wedge plasma waveguide structure with embedded grating. Diffraction grating coupling is used to analyze the exciting phenomenon of SPP. The structure characteristics are obtained by changing the thickness of the metal film and the incident light angle. The calculation results show that the metal film thickness reduction will lead to fast reduction of the transmission bandwidth as well as the transmission rate. The change of the incident light angle will also lead to the variation of the transmitted light efficiency. We also simulate the wedge surface plasmon waveguide structure to obtain the film thickness change transmission curve, angle of the incident light transmittance, and the corresponding transmission rate variation. The results in this paper are significant for nanoplasmons coupling of semiconductor equipment.
作者
孟爱妮
MENG Ai-ni(Weifang University of Science and Technology,Shouguang 262700,Chin)
出处
《光通信研究》
北大核心
2016年第4期42-44,共3页
Study on Optical Communications
基金
国家自然科学基金资助项目(5140617)
江苏省纯电动微型车驱动桥结构可靠性研究项目(2015QCCD-008)
