| 一种新型非基于慢变包络近似的三维有限元束传播法 |
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| 引用本文： | 于兵,赵丹,葛俊祥,孙小菡.一种新型非基于慢变包络近似的三维有限元束传播法[J].南京气象学院学报,2016,8(6):529-532. |
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| 作者姓名： | 于兵 赵丹 葛俊祥 孙小菡 |
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| 作者单位： | 南京信息工程大学 电子与信息工程学院, 南京, 210044;南京信息工程大学 电子与信息工程学院, 南京, 210044;南京信息工程大学 电子与信息工程学院, 南京, 210044;东南大学 电子科学与工程学院, 南京, 210096 |
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| 基金项目： | 江苏省博士后基金（1301135C）；江苏省高校优势学科建设工程（PAPD）项目 |
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| 摘 要： | 提出了一种新型非基于慢变包络近似的三维有限元束传播法.该方法相较Hadley所提出的广角束传播法，在分析光信号与光波导之间相互作用时同时考虑了载波和调制波对传输特性的影响，更具一般性且精度更高.通过与已发表的权威文献相比，在相同的计算资源下，精度提高了10%.
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| 关 键 词： | 束传播法 有限元法 广角(WA) Padé算子 定向耦合器 |
| 收稿时间： | 2014/5/22 0:00:00 |
A novel finite element method based beam propagation method without using slow varying envelope approximation |
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| YU Bing,ZHAO Dan,GE Junxiang and SUN Xiaohan.A novel finite element method based beam propagation method without using slow varying envelope approximation[J].Journal of Nanjing Institute of Meteorology,2016,8(6):529-532. |
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| Authors: | YU Bing ZHAO Dan GE Junxiang and SUN Xiaohan |
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| Institution: | School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044;School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044;School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044;School of Electronic Science and Engineering, Southeast University, Nanjing 210096 |
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| Abstract: | A novel finite element method (FEM) based wide-angle (WA) beam propagation method (BPM) was presented whereby the scalar Helmholtz equation was solved without using the slow varying envelope approximation (SVEA) and was more general and preciser than the well-known WA-BPM proposed by Hadley.The accuracy of this novel scheme was increased 10% in comparison with that of other existing approaches. |
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| Keywords: | beam propagation method (BPM) finite element method (FEM) wide-angle (WA) Padé operator directional coupler |
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