Simulation of a Symmetry Metamaterial Waveguide Absorber(TE&TM)☆
Simulation of a Symmetry Metamaterial Waveguide Absorber(TE&TM)☆
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对称超材料波导吸波器的仿真(TE&TM)☆
DOI：
10.1016/j.egypro.2015.07.776
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Shabat
中科院分区：
文献类型：
--
作者：
H. M. Mousa;M. Shabat
本次交流展示了用于太阳能电池应用的有损波导结构中的超材料吸收器的模拟。在红外和可见光区域研究了在包含薄膜超材料的三层波导结构中传播的横向电（TE）和横向磁（TM）波。计算了描述具有复值传播常数的有损导模的特征值方程的奇对称解。它们表现出非常强的纵向衰减，该衰减随着模式数的增加而增加，并且随着膜厚度的减小而增加。还计算并说明了 TE 和 TM 波的纵向衰减与可见光区域中入射波波长的关系。与较高 TM 模式相比，LHM 对较高 TE 模式的吸收效果更好，并且在可见光区域的较短波长处获得最佳吸收。此外，TE波的归一化电剖面和TM波的归一化磁剖面分别显示出更强的电场和磁场。与右手材料（RHM）或金属介质相比，在左手材料（RHM）或金属介质中还观察到更多的光吸收，这可能适合太阳能电池应用。
This communication presents a simulation of metamaterials absorber in lossy waveguide structure for solar cell applications. Both transverse electric (TE)and transverse magnetic (TM) waves propagating in a three layered waveguide structure containing metamaterials as thin film have been studied in infrared and visible regions. The odd symmetry solutions of the Eigen value equation describing lossy –guided modes with complex –valued propagation constants have been computed. They exhibit very strong longitudinal attenuation which increases with the increasing of the mode's number and increases with the decreasing of the film thickness. The longitudinal attenuations are also computed and illustrated versus the wavelength of the incident waves in the visible regions for both TE and TM waves. LHM is better absorber of higher TE modes than that of higher TM modes and the best absorption is attained at shorter wavelengths in the visible region. Moreover, the normalized electric profile of TE waves and normalized magnetic profile of TM waves shows more stronger electric field and magnetic field respectively. More light absorption of the trapped modes in LHM slab are also observed than that in right handed material(RHM) or metal medium which is appropriate potentially for solar-cell application.