| 光子晶体光纤前向布里渊散射现象中的声波带隙特性 |
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| 引用本文： | 苏晓星,陈钊.光子晶体光纤前向布里渊散射现象中的声波带隙特性[J].北京交通大学学报(自然科学版),2009,33(2). |
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| 作者姓名： | 苏晓星 陈钊 |
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| 作者单位： | 北京交通大学,电子信息工程学院,北京,100044;北京交通大学,理学院,北京,100044 |
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| 基金项目： | 北京交通大学科技基金 |
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| 摘 要： | 利用平面波展开方法,对光子晶体光纤的前向布里渊散射现象中的声波带隙特性进行了数值仿真.结果表明,对于较为常见的空气孔排列为六角密排结构、空气孔形状为圆形的实芯光子晶体光纤,只有当空气孔的填充率大于一定阈值时才出现较明显的XY模态声波的带隙,并且最低与次低带隙的上下边界均随空气孔的填充率的增大而下降.根据所得结果讨论了在这种类型的光子晶体光纤中空气孔的填充率对前向布里渊散射强度的影响.
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| 关 键 词： | 光子晶体光纤 前向布里渊散射 声子晶体 声波带隙 平面波展开 |
Acoustic Band Gap Properties of the Forward Brillouin Scattering Phenomenon in Photonic Crystal Fibers |
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| SU Xiaoxing,CHEN Zhao.Acoustic Band Gap Properties of the Forward Brillouin Scattering Phenomenon in Photonic Crystal Fibers[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2009,33(2). |
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| Authors: | SU Xiaoxing CHEN Zhao |
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| Institution: | 1.School of Electronics and Information Engineering;2.School of Science;Beijing Jiaotong University;Beijing 100044;China |
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| Abstract: | Acoustic band gap properties of the forward Brillouin scattering phenomenon in photonic crystal fibers are simulated by using plane wave expansion method.The results shown that,for the typical kind of photonic crystal fibers with hexagonally arrayed circular air holes,the band gap of acoustic wave of XY mode appears only when the air holes' filling rate is greater than certain threshold value,and the upper and lower boundary values of the band gap decrease with the increasing of the air holes' filling rate.... |
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| Keywords: | photonic crystal fiber forward Brillouin scattering phononic crystal acoustic band gap plane wave expansion |
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