| 光子晶体液晶光纤的光波导特性 |
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| 引用本文： | 黄芳云,杨东. 光子晶体液晶光纤的光波导特性[J]. 光电子技术, 2009, 29(1) |
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| 作者姓名： | 黄芳云 杨东 |
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| 作者单位： | 1. 温州大学图书馆,浙江,温州,325035
2. 温州大学物理与电子信息学院,浙江,温州,325035 |
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| 摘 要： | 在光子晶体光纤芯区的圆空气柱中填充向列相液晶,用电场控制液晶分子的排列方向,构成了一种光子晶体液晶光纤.用阶跃有效折射率模型研究了电场、工作光波长及光纤结构参数对可调光子晶体液晶光纤的双折射和模式截止特性,并用E7液晶进行了数值计算.结果表明这种光纤的双折射值随电场增大而增大,增大电场和减小光波长可使光纤由单模传输变成多模传输,减小包层中空气孔的相对孔径引起光纤中单模与多模界面向短长波方向移动,包层的相对孔径小于0.14左右时光纤出现无截止单模传输,此值小于没有液晶填充PCF出现无截止单模传输时的包层相对孔径,电场的变化不会对无截止单模传输产生影响.
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| 关 键 词： | 光子晶体光纤 液晶填充 电场 双折射 模式截止 |
Optical Waveguide Properties of Photonic Crystal Liquid Crystal Fibers |
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| Huang Fangyun,Yang Dong. Optical Waveguide Properties of Photonic Crystal Liquid Crystal Fibers[J]. Optoelectronic Technology, 2009, 29(1) |
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| Authors: | Huang Fangyun Yang Dong |
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| Affiliation: | Huang Fangyun1,Yang Dong2(1.The Library of Wonzhou University,Wenzhou Zhejiang 325035,CHN,2.School of Physics and Electronic Information,Wenzhou University,Wenzhou Zhejiong 325035,CHN) |
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| Abstract: | Based on nematic liquid crystal filled in hole of photonic crystal fiber core,liquid crystal molecular director controlled by electric filed,the photonic crystal liquid crystal fibers(PCLCF) was proposed.Studies on the birefringence and mode cutoff vary with electric field,wavelength and fiber parameters in PCLCF using the step effective index model,and was numeric calculated with liquid crystal E7.The results show that the birefringence of the PCLCF increased with electric field,single-model may be changed... |
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| Keywords: | photonic crystal fiber liquid crystal fill electric field birefringence mode cutoff |
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