The self-imaging effect based on symmetrical interference in multimode layer-by-layer photonic crystal waveguides (PhCWs), is numerically studied with finite-difference time-domain simulations. With the properties of twofold images, a kind of three-dimensional (3D) PhCW-based power splitters with an ultracompact size using complete photonic bandgaps is proposed, calculated, and analyzed. The presented structure can be extended for the design of M X N power splitters for 3D photonic integrated circuits applications.
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机译：通过有限差分时域仿真，对基于对称干涉的多模逐层光子晶体波导（PhCWs）中的自成像效应进行了数值研究。借助双重图像的特性，提出，计算和分析了一种基于PhCW的三维（3D）功率分离器，它具有完整的光子带隙，具有超紧凑的尺寸。可以为3D光子集成电路应用的M X N功率分配器的设计扩展所提出的结构。
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