Relation of the Imaging Position and Phase in General 1×N MMI Devices
一般1×N的MMI成像位置和相位关系

Based on self-imaging of multimode interference (MMI) devices, the relation of the imaging and phase in general 1?N MMI devices is discussed. The analysis results have been validated by utilizing guide-mode transfers theory. The imaging positions and relative relations of phase depend on nearly the original position of the input imaging.