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通过转移矩阵方法理论,研究含左手材料平板波导导波模式与表面波的特性,结果表明:在TE极化情况下,当包裹层为金属-芯层为左手材料的三层平板波导满足波导导行条件时,导波层能承载新功能的导波模式,即不存在TE0模;在特殊条件下存在TE1模,而且这导波模式与电磁波频率、材料的介电常数和磁导率密切相关;当不满足波导导行条件时,三层平板波导的三个区域出现不同指数规律衰减的表面波,当导波系数与导波层厚度的乘积为2.1π时,不同模式的表面波将趋向一致。模系数m的奇偶性对导波模式和表面波的能流分布有着显著的影响。利用包裹层为金属-芯层为左手材料三层平板波导的导波模式、表面波和能流分布的奇异特性,可以实现特效导波模式的波导器件,为波导实际设计和应用提供了理论参考。
The transfer matrix method is used to study the characteristics of guided wave mode and surface wave of slab waveguide with left-handed material. The results show that when the cladding layer is a three-layer slab waveguide with metal-core left-handed material, In the condition of line, the guided wave layer can carry the wave guide mode of the new function, that is, the TE0 mode does not exist. The TE1 mode exists under the special conditions, and the wave guide mode is closely related to the electromagnetic wave frequency, the dielectric constant of the material and the permeability When the wave guide conditions are not satisfied, the surface wave with different exponential decay appears in the three regions of the three-layer slab waveguide. When the product of the guided wave coefficient and the wave guide layer thickness is 2.1π, different modes of surface wave will tend to Consistent. The parity of the modulus m has a significant influence on the energy flow distribution of the guided wave mode and the surface wave. Waveguide devices with special wave guide mode can be realized by using the singularity of wave guide mode, surface wave and energy flux distribution of the three-layer slab waveguide whose cladding layer is the metal-core left-handed material, which provides a theoretical reference for the practical design and application of waveguides .