槽型腔表面等离子体滤波器特性研究  

Study of slot cavity surface plasmonic filter characteristics

作　　者：商科峰[1] 

机构地区：[1]西南交通大学信息科学与技术学院信息光子与通信研究中心,四川成都610031

出　　处：《光通信研究》2012年第5期50-51,67,共3页Study on Optical Communications

摘　　要：为了降低槽型腔滤波器透射频谱的FWHM(半高全宽),采用FDTD(时域有限差分法)对基于MIM(金属-介质-金属)波导的单槽型腔滤波器和级联槽型腔滤波器结构进行了数值模拟,并用耦合模理论对其透射频谱进行了分析。仿真结果表明,级联槽型腔滤波器能够有效抑制透射频谱的FWHM,其透射频谱的FWHM仅为单槽型腔结构的30%～40%。In order to reduce the Full Width at Half Maximum （FWHM） of slot-type cavity filters, we numerically simulate the structures of the Metal-Insulator-Metal （MIM） waveguide-hased single slot- and cascaded slot-type cavity filters by using the Finite-Difference Time-Domain （FDTD） method and analyze their transmission spectra by using the coupled mode theory. The simulation results show that the FWHM of the transmission spectrum of the cascaded slot-type cavity filters can be effectively suppressed to be only about 30-40% of that of the single slot-type cavity filters.

关 键 词：表面等离子体激元 耦合谐振 波长滤波 集成光学 

分 类 号：TN252[电子电信—物理电子学]