Fig. 6
Reconfigurable ONNs implementation based on 4f system. a Calculation process implementation of a single neuron, including linear and nonlinear operation39. b Reconfigurable ONNs built on 4f system and SLMs39, the nonlinear optical activation function in the optical system is realized based on electromagnetically induced transparency161,162. c Reconfigurable ONNs built on 4 f system and DMDs40. d Implementation of experimental setup40 for (c). a, b Reprinted with permission from ref. 39 from © Optical Society of America. c, d Reprinted with permission from ref. 40 from © Optical Society of America
