Fig. 10
ONNs constructed by MZIs. a On-chip ONN based on 56 MZIs83. b Mathematical inference diagram of the training process for ONN that supports in-situ online training84. c On-chip ONNs based on amplitude and phase modulation60. d ONN chip designed and fabricated based on MZIs and diffractive units90. a Reproduced from ref. 83 with permission of Springer Nature: Nature Photonics. b Reproduced with permission from ref. 84 from © Optical Society of America. c Reproduced from ref. 60 with permission of Springer Nature: Nature Communications. d Reproduced from ref. 90 with permission of Springer Nature: Nature Communications
