福建师范大学学报（自然科学版）2013，Vol.29Issue(4)：53-56,72,5.
阶跃折射率光纤TE01模衍射场的光束传输因子
The Beam Propagation Factor in Diffracted Field of TE01 Mode in Step Index Fiber
摘要
Abstract
Based on the mode field distributions and the relationship between the radial spatial spectrum and the mode field distributions of the TE01 mode in step index fiber,the expressions of the mode field radius and the radial spatial frequency radius by second moment algorithm and the beam propagation factor of diffracted field are derived.Numerical calculation shows that the beam propagation factor of the TE01 mode is close to 2 when the normalized frequency is greater than 2.797 4.The fitting expression between the beam propagation factor and the normalized frequency is given by curve fitting,the accuracy of fitting expression is show by the relative error between the fitted value and the calculated value.关键词
模场半径/空间频谱/光束传输因子/归一化频率Key words
mode field radius/ spatial frequency spectrum/ beam propagation factor/ normalized frequency分类
信息技术与安全科学引用本文复制引用
张振,李连煌,郭福源..阶跃折射率光纤TE01模衍射场的光束传输因子[J].福建师范大学学报（自然科学版）,2013,29(4):53-56,72,5.基金项目
福建省教育厅重点资助项目(JA10062 （）
JK2012007) （）
