通过在金属-绝缘体-金属表面等离激元波导单侧引入平行的双谐振腔结构，实现了等离激元诱导透明效应的数值模拟，基于谐振耦合导致的模式分裂理论揭示了单等离激元诱导透明透射峰的形成机理，并数值研究了透射峰幅度及谱宽与模型结构参数的依赖关系。在此基础上设计了在波导双侧三腔结构，并对其透射谱进行了数值仿真，结果表明：选取适宜腔长及间距参数，可以在三腔模型中产生双等离激元诱导透明透射峰，并且峰值位置可以随腔长以近似线性关系改变。

A nano-scale plasmonic system based on the Metal-Insulator-Metal (MIM) waveguide side coupled with two parallel rectangle resonator have been proposed and numerically simulated to realize the Plasmon-Induced Transparency (PIT) effect. The formation mechanism and evolution law of the transmission peaks based on PIT have been clarified by the theories of mode splitting and resonant coupling. By introducing the single resonator on the other side of the MIM waveguide, the double PIT peaks are observed in the transmission spectra. In addition, the locations of peak can be readily tuned by adjusting the resonator lengths.