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Unidirectional light beam splitting characters of the two-dimensional hybrid photonic crystal structures

机译：二维混合光子晶体结构的单向分束特性

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摘要

The unidirectional light beam splitting characters of the two-dimensional photonic crystal structures consisting of silicon rods immersed in air are studied. Through interlacing the silicon rods with different radiuses at the interface of the two photonic crystal structures, the unidirectional light beam splitting phenomena towards two opposite forward directions within different frequency regions are achieved. A novel three-channel beam splitting behavior is also observed. The theoretical analysis shows that the self-collimation effect plays an important role in the high-quality beam splitting behaviors. And the influence of the alteration of period's length to the light beam splitting effects is also studied, through which the working frequency and the two split light beam's propagation direction can be changed simultaneously.
机译：研究了由浸入空气中的硅棒组成的二维光子晶体结构的单向光束分裂特性。通过在两个光子晶体结构的界面处交织具有不同半径的硅棒，实现了在不同频率区域内朝向两个相反的正向方向的单向光束分裂现象。还观察到一种新颖的三通道分束行为。理论分析表明，自准直效应在高质量分束行为中起着重要作用。并研究了周期长度的变化对光束分裂效果的影响，可以同时改变工作频率和两束光束的传播方向。

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