Fig. 7: Output power efficiency of the electronic encoding-diffractive decoding scheme for optical communication around fully opaque occlusions.

a Diffraction efficiency (DE) of the same designs shown in Fig. 3. b The trade-off between DE and SSIM achieved by varying the training hyperparameter \(\eta\), i.e., the weight of an additive loss term used for penalizing low-efficiency designs. For these designs, \({w}_{o}=32\lambda\) and \(L=3\) were used. The DE and SSIM values are calculated by averaging over 10,000 MNIST test images. c The performance of some of the designs shown in (b), trained with different \(\eta\) values.