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首页> 外文期刊>IEEE Journal of Quantum Electronics >Tunable Dispersion Properties of Liquid Crystal Infiltrated Into a Two-Dimensional Photonic Crystal
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Tunable Dispersion Properties of Liquid Crystal Infiltrated Into a Two-Dimensional Photonic Crystal

机译：渗入二维光子晶体的液晶的可调色散特性

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摘要

Tunable dispersion properties of liquid crystal (LC) infiltrated into a two-dimensional silicon photonic crystal (PC) are presented. For the analysis of refraction tuning, polarization splitting and superprism effect, we make use of the variations of the dispersion curves as a function of the orientation of the optic axis of the LC. In particular, we show that the light propagation angle in the PC becomes continuously tunable by reorienting the optic axis of the LC; at a certain incident angle an extreme sensitivity of the propagation angle as a function of the orientation of the optic axis of the LC occurs. Moreover, the splitting of the transverse magnetic and transverse electric polarizations of light is substantially larger than the splitting in a conventional bulk anisotropic medium. This splitting angle can also be well controlled by adjusting the optic axis orientation of the LC. Furthermore, the variation of optic axis orientation also modifies the sharp corners of the dispersion curve, which in turn gives an excellent control of the superprism effect in the PC.
机译：介绍了渗入二维硅光子晶体（PC）的液晶（LC）的可调色散特性。为了分析折射调谐，偏振分裂和超棱镜效应，我们利用了色散曲线的变化作为LC光轴方向的函数。特别是，我们表明，通过重新定向LC的光轴，PC中的光传播角度变得可以连续调节；在一定的入射角下，传播角度的极端灵敏度随LC光轴方向的变化而变化。而且，光的横向磁极化和横向极化的分裂比常规的体各向异性介质中的分裂大得多。通过调节LC的光轴方向，也可以很好地控制该分离角。此外，光轴方向的变化还改变了色散曲线的尖角，从而又很好地控制了PC中的超棱镜效果。

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