These formulae and conclusions can be used to indicate the positions of the images with the arbitrary input field and positional number without complex calculations, which provide a useful tool for the design of multimode interference couplers with one-and two-dimensional confinement. 根据成像位置的表达式和成像规律可以直接得出任意输入场位置和位置数所对应的成像位置,为一维和二维限制的多模干涉耦合器的设计提供了理论基础。
Analysis of Phase Relations in MMI Couplers with a Positional Number of 2 位置数为2的多模干涉耦合器相位关系分析