Investigation of dual acoustic and optical asymmetric propagation in two-dimensional phoxonic crystals with grating
Investigation of dual acoustic and optical asymmetric propagation in two-dimensional phoxonic crystals with grating
复制标题
二维辉声子晶体中光栅的双声光不对称传播研究
DOI：
10.1364/ome.7.001716
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发表时间：
2017
影响因子：
2.8
通讯作者：
SHAO-YONG HUO
中科院分区：
文献类型：
--
作者：
JIU-JIU CHEN;SHAO-YONG HUO
本文报道了在空气中用周期性硅棒阵列与周期性光栅相结合，同时实现声光非对称传输。（光栅-光子晶体）。本文从理论和数值计算上证明了正方形硅棒光栅光子晶体在同一约化频率范围内对声和光都能同时表现出非对称传播。声、光从光栅界面入射时能透过复合结构，而从相反方向入射时则被完全反射。此外，当硅棒被调谐成三角形晶格时，也实现了反向非对称传输。声和光在从光栅界面入射时被阻挡，同时完全能够穿过复合结构以进行反向入射。这两种可调谐的声光双非对称传输方式显示了声光器件的巨大潜力。
We report the simultaneous existence of acoustic and optical asymmetric.transmission by combining a periodic array of silicon rods in air with a periodic grating.(grating-phoxonic crystals). Theoretically and numerically, we demonstrate that the gratingphoxonic.crystals with a square lattice of silicon rods can exhibit simultaneous asymmetric.propagation in the same reduced frequency range both for sound and light. The sound and.light can transmit through the composite structure when incident from the grating interface.but are completely reflected for the reverse direction incidence. Furthermore, when the silicon.rods are tuned into a triangular lattice, reversed asymmetric transmissions are also achieved..Sound and light are blocked when incident from the grating interface while being fully able to.pass through the composite structure for the reverse direction incidence. These two tunable.dual acoustic and optical asymmetric transmissions show great potential for acoustic-optic.devices by simultaneously manipulating sound and light.