Fig. 6: Examples of nonlinear free-space optical encoders. | npj Nanophotonics

Fig. 6: Examples of nonlinear free-space optical encoders.

From: Free-space optical encoder for computer vision

Fig. 6

a Quantum dot based saturable absorber for nonlinear optical neural network. Reprinted from ref. 20. ©The Authors, some rights reserved; exclusive licensee AAAS. Distributed under a CC BY-NC 4.0 license. Reprinted with permission from AAAS. b Multilayer light-emitting-diodes and photodetectors generating nonlinear optical layers for deep neural network. Reprinted from ref. 87 under a CC BY-NC-ND license. c Sequential linear scattering in a cavity converted into a nonlinear scattering. Reprinted from ref. 21 under a CC BY license.

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