| 用FDTD法分析L形波导的单模带宽 |
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| 引用本文： | 胥万松,郑勤红,姚斌,林福明,王建敏,李升辉,李琳.用FDTD法分析L形波导的单模带宽[J].云南师范大学学报(自然科学版),2011(5):61-64. |
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| 作者姓名： | 胥万松 郑勤红 姚斌 林福明 王建敏 李升辉 李琳 |
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| 作者单位： | 云南师范大学物理与电子信息学院;德宏师范高等专科学校; |
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| 基金项目： | 国家自然科学基金重点项目资助(50734007) |
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| 摘 要： | 用时域有限差分(FDTD)法实例计算L形波导的截止波数,并与相关文献报道的结果进行了比较,计算结果表明:FDTD法具有较高的计算精度,可以很方便地用于波导传输特性分析。用FDTD法计算分析了几何形状对L形波导的主模带宽的影响,结果表明,可以通过改变L形波导的几何尺寸来调整其单模带宽。
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| 关 键 词： | 时域有限差分法 L形波导 截止波数 单模带宽 |
FDTD Analysis of L-shaped Waveguide on Dominant-mode Bandwidth of Single-mode |
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| XU Wan-song,ZHENG Qin-hong,YAO Bin,WANG Jian-min,LIN Fu-ming,LI Sheng-hui,LI Lin.FDTD Analysis of L-shaped Waveguide on Dominant-mode Bandwidth of Single-mode[J].Journal of Yunnan Normal University (Natural Sciences Edition),2011(5):61-64. |
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| Authors: | XU Wan-song ZHENG Qin-hong YAO Bin WANG Jian-min LIN Fu-ming LI Sheng-hui LI Lin |
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| Institution: | XU Wan-song1,2,ZHENG Qin-hong1,YAO Bin1,WANG Jian-min1,LIN Fu-ming1,LI Sheng-hui1,LI Lin(1.School of Physics and Electronic Information,Yunnan Normal University,Kunming 650092,China 2.Dehong Teachers College,Manshi 654800,China) |
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| Abstract: | The influence of the geometry size on the bandwidth of the dominant-mode in a L-shaped waveguide is analyzed by the finite-difference time-domain(FDTD) method.Numerical results demonstrate that the bandwidth of the dominant-mode can be regulated by changing the geometry size of the L-shaped waveguide.The wavenumbers(kc) of the L-shaped waveguide is given to validate the theory,and to demonstrate the efficiency of FDTD method. |
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| Keywords: | finite-difference time-domain L-shaped waveguide cutoff wavenumber dominant-mode bandwidth |
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