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多包层平坦光纤色散的数值分析
引用本文:高涛,刘舒蕸,杨春勇.多包层平坦光纤色散的数值分析[J].中南民族大学学报(自然科学版),2007,26(3):67-69.
作者姓名:高涛  刘舒蕸  杨春勇
作者单位:[1]中南民族大学电子信息工程学院 [2]武汉
基金项目:中南民族大学校科研和教改项目
摘    要:采用了等效法求解多包层平坦光纤的色散.假设波导色散和材料色散加性的,计算了平坦阶跃光纤的精确的色散.利用Matlab工具,先给出光纤的色散和传播常数之间的关系,再将多包层平坦光纤的等效为阶跃光纤,计算出等效的折射率,然后用迭代法解方程组计算出传播常数的数值解,最后拟合出光纤的色散曲线.结果表明:将多包层光纤等效为阶跃光纤,减少了计算量,精度也能达到实用要求.

关 键 词:色散  传播常数  数值解法  等效折射率  多包层光纤
文章编号:1672-4321(2007)03-0067-03
修稿时间:2007年8月7日

Numerical Evaluation of Chromatic Dispersion in Multicladding Dispersion-Flattend Optical Fibers
Gao Tao,Liu Shuxia,Yang Chunyong.Numerical Evaluation of Chromatic Dispersion in Multicladding Dispersion-Flattend Optical Fibers[J].Journal of South-Central Univ for,2007,26(3):67-69.
Authors:Gao Tao  Liu Shuxia  Yang Chunyong
Abstract:Based on the equivalent principle,an accurate and efficent process is proposed to evaluate chromatic dispersion in multicladding dispersion-flattend single-mode optical fibers. The relation between the dispersion of the fiber and the propagation constant is presented.Then the equivalent refractive index is obtained by equalling the multicladding fiber.The propagation constant is obtained by solving the characteristic equation with computer iteration.Next the chromatic dispersion curve is polyfitted according to the numerical solution of propagation.Multicladding refraction indexes are transfered into single-cladding equivalent refraction index,thus calculation is simplified.
Keywords:chromatic dispersion  propagation constant  numerical method  equivalent refraction  multi-cladding fiber
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