Fig. 7
Diffractive deep neural network (D2NN). a Schematic diagram of the physical inferring process of D2NN42. b Comparison between a D2NN and an electronic conventional neural network42. c 3D model reconstruction of a D2NN hidden layer for 3D-printing42. d Schematic illustration and experiment setup of optical logic operations by a DONN44. a-c Reproduced by permission from AAAS42. d Reproduced from ref. 44 with permission of Springer Nature: Light: Science & Applications
