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从能带结构和等频面两方面完整阐述了利用光子晶体实现全角度偏振分束的条件,分析等频面目的在于确保波矢的切向分量保持连续,采用时域有限差分(FDTD)方法模拟了高斯光束在波状膜层中的传播过程,通过对比TE模与TM模在0°—89°不同入射角情况下的振幅透射系数,理论上验证了波状膜层的全角度偏振分束效应.
The condition of full-angle polarization beamsplittering using photonic crystals is fully described from the energy band structure and the equipartential plane. The purpose of analyzing the equal-frequency plane is to ensure that the tangential components of the wave vector remain continuous, and the finite difference time domain (FDTD) method By simulating the propagation of Gaussian beams in the wave-shaped layer, the full-angle polarization splitting effect of the wave-shaped layer is theoretically verified by comparing the amplitude transmission coefficients of the TE and TM modes at different incident angles of 0 ° -89 °. .