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利用２×２全息透镜阵列的实焦点成像方式实现２Ｎ×２Ｎ输入的ＰＳ光互连，分析指出，由于实焦点成像对输入的交错，必须在透镜阵列后添加一个成像透镜才能获得ＰＳ互连变换；推导表明，ＰＳ变换成像的距离是较稳定的，主要与成像透镜焦距有关，系统放大率主要与成像透镜焦距和全息透镜焦距之比有关；实验获得了满意的结果。
The PS optical interconnection of 2N × 2N input is realized by using the real focal point imaging method of 2 × 2 holographic lens array. It is pointed out that due to the real focal point imaging, the input interlacing must be added after the lens array to obtain the PS interconnection transformation The deduced results show that the distance of PS transform imaging is relatively stable, which is mainly related to the focal length of the imaging lens. The magnification of the system is mainly related to the ratio of the focal length of the imaging lens and the focal length of the holographic lens. Satisfactory results have been obtained.