Light controlling in transverse separation modulated photonic lattices.
Light controlling in transverse separation modulated photonic lattices.
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DOI：
10.1364/oe.20.019119
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发表时间：
2012-08
期刊：
影响因子：
3.8
通讯作者：
Zheng Cao;X. Qi;X. Feng;Z. Ren;Guoquan Zhang;J. Bai
中科院分区：
文献类型：
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作者：
Zheng Cao;X. Qi;X. Feng;Z. Ren;Guoquan Zhang;J. Bai
我们数值研究了高斯光束在四种不同类型的横向分离调制光子晶格中的传输。我们发现，服从双曲正切函数或矩形函数的调制可以作为光学势，光波可以在这两个正势之间的区域内局域或重现。而光束在这两个负势之间的区域衰减，因为这些结构不能支持局域模式。我们的结果为光子晶格中的光控制和操纵提供了新的途径。
We numerically study the propagation of Gaussian beams in four different types of transverse separation modulated photonic lattices. We find the modulation obeying hyperbolic secant or rectangular functions can act as optical potentials, and the light waves can be localized or recur in the regions between such two positive potentials, respectively. While the beams decay in the regions between such two negative potentials since these structures could not support localized modes. Our results provide new ways for light controlling and manipulation in photonic lattices.