正方形栅格全固态光子晶体光纤色散的研究  

Research of dispersion characteristics of square-lattice all solid photonic bandgap fibers

作　　者：贺冯良[1] 刘敏[1] 董传培[1] 张敏[1] 马玲芳[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《激光技术》2012年第1期90-92,102,共4页Laser Technology

摘　　要：为了研究正方形栅格全固态光子晶体光纤色散特性,基于全矢量有限元法,对其色散特性进行了数值模拟。通过改变正方形栅格全固态光子晶体光纤的结构参量,分析比较了它们的色散特点,并通过改进结构得出一种零散波长在1.55μm的四方栅格全固态光子带隙光纤。结果表明,四方栅格全固态光子带隙光纤色散具有3个零色散点,其零色散波长随高折射率棒直径d的增大而向长波方向移动,其色散平坦程度随棒间距Λ的减少而变得更加平坦。这为全固态光子晶体光纤的设计和制作提供了理论依据。In order to study the dispersion characteristics of square-lattice all solid photonic bandgap fibers, the dispersion characteristics were simulated by means of full-vector finite element method. After changing the structure parameters of a squarelattice all solid photonic bandgap fiber, its dispersion characteristics were analyzed. Finally, an all solid photonic bandgap fiber with zero dispersion wavelength at 1.55p, m was proposed. The analytical results demonstrate that an all solid square-lattice photonic bandgap fiber has three zero wavelengths, the dispersion characteristic curves shift to the longer wavelength as the hole diameter d becomes larger and the dispersion slope becomes more flattened with the decrease of the hole pitch A. It provides a theoretical evidence to design and fabricate all solid photonie bandgap fibers.

关 键 词：光纤光学 全固态光子晶体光纤 正方形栅格 全矢量有限元法 色散特性 

分 类 号：TN248.1[电子电信—物理电子学]