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磁光Bragg衍射中的接地效应

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摘要 使用表面磁导率法得到任意偏置磁化金属覆层波导中的静磁波传播方程,并结合磁光理论分析了接地效应对基于静磁表面波的磁光Bragg衍射的影响.计算表明,通过恰当设置金属与磁性YIG薄膜间距可以大幅提高磁光衍射效率;而调整偏置磁场方向还可以进一步增强接地效应对磁光衍射的影响;同时分析发现,由接地效应引起的衍射效率峰值对应的频率点与静磁表面波零色散点基本重合,即表现出弱色散特性;而该效应也可提高基于磁光Bragg单元的射频频谱分析能力.因此,接地结构的磁光衍射器件在微波通信、光信号处理等方面具有广泛的应用前景.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第8期877-881,共5页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:60671027)资助项目
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参考文献19

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