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液晶材料光子晶体由于具有可调谐性而得到了广泛的研究,但目前的研究主要集中在可调的光子带隙特性上。详细研究了液晶光子晶体的可调自准直特性。使用平面波展开法分析了液晶旋转角对光子晶体自准直频率的影响,并使用时域有限差分法对光在液晶光子晶体中的传输进行了仿真。结果表明,通过控制液晶旋转角,可以对光子晶体自准直频率进行调节,从而满足不同频率自准直的需要。
Liquid crystal photonic crystals due to its tunability has been widely studied, but the current study focused on the adjustable photonic bandgap properties. The tunable self-collimation properties of liquid crystal photonic crystals are studied in detail. The influence of liquid crystal rotation angle on the self-collimation frequency of photonic crystal was analyzed by using plane wave expansion method. The transmission of light in liquid crystal photonic crystal was simulated by finite difference time domain method. The results show that the self-collimation frequency of the photonic crystal can be adjusted by controlling the rotation angle of the liquid crystal so as to meet the needs of self-collimation at different frequencies.