Secondly, multi-mode interference and self-imaging in multi-mode photonic crystal waveguides are introduced.
探讨了光子晶体多模波导中的多模干涉效应及自成像效应。
参考来源 - 光子晶体波导型器件及其在太赫兹技术中的应用The theoretical analysis shows that, when the relative parameters of coherent superposing Bessel beams satisfy some conditions, the diffractive optical field could have a self-imaging effect, that is, the distribution of optical field could have periodicity along the diffraction direction.
分析表明,当相干叠加的各贝塞尔光束的有关参量满足一定条件时,其衍射光场具有衍射自成像特性,即光场分布随衍射距离发生周期性重复。
参考来源 - 零级贝塞尔光束的“无衍射”特性及其应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on the self-imaging effect of multimode interference couplers, general self-imaging positions are analyzed in detail.
根据多模干涉耦合器的自映像原理，对多模干涉耦合器的成像位置进行分析。
The analysis indicates that the self-imaging effect can be widened to the two-dimensional confinement on the basis of the one-dimensional confinement.
分析表明，一维限制多模干涉器的自镜像效应可以完全拓展到二维上。
The angular displacement of reflecting surface is measured in accordance with the direction change of Moire fringes caused by the inclination of grating. self-imaging plane.
利用光栅自成象面的倾斜引起莫尔条纹方向变化来测量反射表面的角位移。
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