利用时域有限差分方法,通过数值模拟分别研究了基于光子晶体正负折射原理设计的分束器中介质柱半径和介质柱位置的随机误差对分束器性能的影响,发现当介质柱半径的误差振幅小于0.055倍的介质柱标准半径或者介质柱位置的误差振幅小于0.06倍的光子晶体品格常数时,正负折射光束的能流透射率均保持在20%以上.
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