Non-Bragg reflections in a periodic waveguide

摘要: Wave phenomena in a planar periodically corrugated waveguide are investigated detail. It is shown that the corrugation causes resonant interaction between transverse modes (standing waves). The results non-Bragg nature resonances, which divide spectrum of mode into subminizones and give rise to reflections. width gap as well Bragg depends on relative position two periodic plates. varies from zero maximum value upon shifting one plate with respect another half period corrugation. When frequency electromagnetic wave coincides gaps, only unidirectional propagation along grooves allowed waveguide. Thus shift plates switches two-dimensional guiding structure guide creates photonic stripe phase such