【摘要】 设计一种层状光子晶体光纤 ,应用特征矩阵的方法研究了光波在其中的传播规律 ,发现它同其它光子晶体一样 ,存在周期性的带隙结构 ,在一定的频率范围内 ,光沿横向平面的传播受到抑制 ,沿轴向传播的能量损失降低到最小程度。让介质层的空间周期长度成等差级数变化。且相邻介质层的空间周期长度之差很小 ,带隙结构仍然存在 ,但禁带宽度增大 ,增大的程度还与介质层数有关。当介质层数达到一定数值时 ,除极低的频率范围外 ,所有光波在横向平面均被抑制。更多还原

【Abstract】 A new layered photonic crystal fiber is presented.Numerical study is performed.The result shows that it has the same band structure as one dimensional photonic crystal.When the periodical length of the structure increase slowly the width of band gap can be broaden and it becomes more obvious as the number of media layers increases.Given a proper condition,all the light wave is held back on the cross plane except that of much lower frequencies.更多还原