空气孔正方形排列光子晶体光纤的有限元分析

J4 ›› 2010, Vol. 27 ›› Issue (4): 430-434.

空气孔正方形排列光子晶体光纤的有限元分析

关建飞

南京邮电大学光电工程学院，江苏南京 210046

收稿日期:2009-09-04 修回日期:2009-10-18 出版日期:2010-07-28 发布日期:2010-06-13
通讯作者: 关建飞（1979-），男，山西阳泉人，博士，南京邮电大学光电工程学院讲师，研究方向为光纤通信技术与光子晶体光纤。 E-mail:jfguan@yahoo.cn
基金资助:
江苏省高校自然科学基金(09KJB140005)；南京邮电大学攀登计划(NY207005)

Finite element analysis of square-lattice photonic crystal fiber

GUAN Jian-fei

College of optoelectronic engineering, Nanjing University of posts and telecommunications, Nanjing 210046, China

Received:2009-09-04 Revised:2009-10-18 Published:2010-07-28 Online:2010-06-13

摘要/Abstract

摘要：

采用全矢量有限元法结合完美匹配层吸收边界条件对渐增型空气孔正方形排列的高双折射光子晶体光纤的模场分布、限制损耗及双折射特性进行了数值模拟。仿真结果显示：该种结构的光子晶体光纤可以在包层空气孔层数仅为四层的情况下即可将限制损耗控制在1.31×10E-6 dB/m附近；同时横排内层空气孔的直径的变化可以有效地改变光纤的模式双折射曲线的走向，在长波长区间这种影响更为明显。

关键词: 纤维与波导光学, 光子晶体光纤, 有限元法, 双折射, 限制损耗

Abstract:

A square-lattice photonic crystal fiber with gradually increasing air-holes in a silica matrix is analyzed numerically based on a full-vector finite element method with quadratic order triangular elements, and an anisotropic perfectly matched layer is also employed as a boundary condition at computational window edges. The modal distribution, confinement loss and birefringence of the fundamental mode in the fiber are simulated in details. It is confirmed from numerical results that low confinement loss of 1.31×10E-6 dB/m can be realized under condition of four arrays of air holes in the photonic crystal fiber, and high birefringence can be obtained through adjusting the diameter of inner-ring air holes in the fiber, which is more obvious in the longer wavelength range. The numerical results of this paper are highly instructive for the fabrication of birefringent photonic crystal fibers.

Key words: guided-wave and fiber optics, photonic crystal fiber, finite element method, birefringence, confinement loss

关建飞. 空气孔正方形排列光子晶体光纤的有限元分析[J]. J4, 2010, 27(4): 430-434.

GUAN Jian-fei. Finite element analysis of square-lattice photonic crystal fiber[J]. J4, 2010, 27(4): 430-434.

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