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双折射光子晶体光纤传输特性分析
引用本文:池灏.双折射光子晶体光纤传输特性分析[J].光学学报,2004,24(11):552-1556.
作者姓名:池灏
作者单位:浙江大学信息与电子工程学系,杭州,310027
摘    要:采用时域有限差分法对光子晶体光纤导模的传输特性进行数值分析,通过该法可得到任意横向结构光子晶体光纤的色散特性和双折射特性。为提高精度,在计算中应用了各向异性完全匹配层作为吸收边界条件。光子晶体光纤的传输特性完全由其横向结构决定。用时域有限差分法对一类对称结构和两类非对称结构光子晶体光纤进行了数值分析,计算结果表明经合理设计的非对称结构光子晶体光纤中可存在较高的双折射(其双折射可达0.07)。表明时域有限差分法可有效应用于分析和设计具有特定色散和偏振特性的光子晶体光纤。

关 键 词:光子晶体光纤  传输特性  时域有限差分法  双折射  色散特性  导模  非对称结构  偏振特性  数值分析  完全匹配层
收稿时间:2003/12/30

Analysis of Propagation Characteristics of Birefringent Photonic Crystal Fibers
Chi Hao.Analysis of Propagation Characteristics of Birefringent Photonic Crystal Fibers[J].Acta Optica Sinica,2004,24(11):552-1556.
Authors:Chi Hao
Abstract:The propagation characteristics of the photonic crystal fibers (PCF) are numerically analyzed using the finite-difference time-domain (FDTD) method. The dispersion characteristics and the birefringent properties of PCF with any given transversal structure can be obtained by the FDTD method. To improve numerical precision, the anisotropic perfectly matched layer (APML) is used as an absorbing boundary condition in computing. The propagation characteristics of PCF are wholly determined by its transversal structure. One type of PCF with symmetric air-silica structure and two types of PCF with asymmetric air-silica structure are analyzed numerically. Numerical results show that it may exhibit high birefringence in a properly designed asymmetric PCF (whose birefringence can be as high as 0.07). It is shown that the FDTD method can be effectively used in the analysis and design of the PCF with special dispersion and polarization characteristics.
Keywords:photonic crystal fiber  finite difference time domain method  chromatic dispersion  birefringence
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