Fig. 9

ONNs constructed by various volume optical components. a Schematic of the experimental set-up of the all-optical reservoir62. b Scheme of the Folded-in-time deep neural network71. c Architecture of the VCSEL-based all-optical spiking neural network69. d Optical convolution accelerator designed by time-wavelength interleaving multiplexing technique68. e Experimental setup to test the FP-SA neuron73. a Reprinted with permission from ref. 62 from © Optical Society of America. b Reproduced from ref. 71 with permission of Springer Nature: Nature Communications. c Reprinted from ref. 69 with the permission of IEEE Publishing. d Reproduced from ref. 68 with permission of Springer Nature: Nature. e Reprinted with permission from ref. 73 from © Optical Society of America