牛眼光栅的平面波分析

2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2016-08-18 DOI:10.1109/NUSOD.2016.7547036

D. Ray, A. Prabhakar

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引用次数: 0

摘要

用平面波展开法研究了牛眼光栅的透射率。在1550 nm处对光栅参数进行优化。光栅有环形凹槽，铝层和空气层交替存在。通过在柱面坐标系中表示麦克斯韦方程组并求解特征值问题，得到了色散关系。我们观察到低于等离子体频率(ωp)的频率呈平坦带。利用COMSOL仿真验证了带图中k→0处的特征频率。

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Plane wave analysis of bull's eye gratings

We investigated the transmittivity of a bull's eye grating using the plane wave expansion method. The parameters of the grating were optimized at 1550 nm. The grating has annular grooves with alternating layers of aluminum and air. The dispersion relation was obtained by expressing Maxwell's equations in cylindrical co-ordinates and solving the eigenvalue problem. We observe flat bands for frequencies below plasma frequency (ωp). COMSOL simulations were used to validate the eigenfrequencies at k → 0 in the band diagram.

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2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)

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