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利用隧穿机制研究了含磁光金属Co6Ag94的三明治结构(磁光金属嵌入两个磁光光子晶体中)的透射性质和磁光法拉第旋转效应。在含磁光金属的三明治结构中,分别研究了双透射峰和单透射峰两种情况。研究结果表明,无论是双透射峰还是单透射峰情况,局域在磁光金属和磁光光子晶体界面上的电磁场,都能够同时增强磁光金属的透射和磁光法拉第旋转效应。另外,分析了磁光金属Co6Ag94存在增益时该三明治结构法拉第旋转角达到-45°的情况,此性质为设计小型化的磁光隔离器件提供了理论依据。
The tunneling mechanism was used to study the transmission properties and magneto-optical Faraday rotation of the sandwich structure with magneto-optical metal Co6Ag94 (magneto-optical metal embedded in two magneto-optic photonic crystals). In the sandwich structure with magneto-optical metal, two cases of double transmission and single transmission are studied respectively. The results show that the electromagnetic field localized at the interface of magneto-optic metal and magneto-optic photonic crystal both can enhance the transmission of magneto-optical metal and the magneto-optical Faraday rotation effect, no matter the two-transmission peak or the single-transmission peak. In addition, the Faraday rotation angle of the sandwich structure reaches -45 ° when the gain of the magneto-optical metal Co6Ag94 is analyzed. This property provides a theoretical basis for designing a miniaturized magneto-optical isolation device.