激光与光电子学进展, 2018, 55 (4): 041302, 网络出版: 2018-09-11   

TE振荡模在左手材料劈形平面波导中的传输 下载: 955次

Propagation of TE Oscillating Guided Modes in a Taper Slab Waveguide with Metamaterials
作者单位
湖州师范学院理学院, 浙江 湖州 313000
摘要
对含各向异性左手材料劈形平面波导中的TE振荡模进行了相关研究。从Maxwell方程组出发,采用变量分离法,根据切向电磁场连续的边界条件,得到该模的色散方程以及功率流方程。基于上述方程,采用曲线拟合方法,画出了相关的特性曲线。结果显示:电场强度同时考虑了xz方向的影响,功率流随波导长度增加而周期性振荡变化;当劈形平面波导的斜率k=0.1,导模传输的波导长度小于2.5 mm;当频率较低时(f=5.0 GHz)以及k=0.01,对于不同的模阶数,波导厚度的变化对功率流在波导中传输的影响不大。这些特性将有助于未来波导的小型化以及波导加工精度的降低。
Abstract
The TE oscillating guided modes and their propagation properties in a taper slab waveguide with anisotropic metamaterials are investigated. From Maxwell equations, based on continuous boundary conditions for tangential electromagnetic fields, we obtain a dispersive equation and a power flow equation of TE oscillating guided modes with a variable separation method. Based on the above equations, using a curve fitting technique, we plot some corresponding curves. It is found that the electric field intensity considers the influence of x and z directions, and the power flow changes periodically with the increase of the waveguide length; as the slope of the taper slab waveguide k=0.1, the waveguide length of the guided mode transmission is less than 2.5 mm; as lower frequencies (f=5.0 GHz) and k=0.01,for different mode orders, the variation of waveguide thickness has little effect on power flow transmission. The properties will help us to minimize the waveguide and decrease the accuracy requirement of the waveguide processing in the future.

沈陆发, 谢建平, 王子华. TE振荡模在左手材料劈形平面波导中的传输[J]. 激光与光电子学进展, 2018, 55(4): 041302. Lufa Shen, Jianping Xie, Zihua Wang. Propagation of TE Oscillating Guided Modes in a Taper Slab Waveguide with Metamaterials[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041302.

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