Fig. 5: High-speed convolution of the MNIST handwritten digits dataset.
From: Partial coherence enhances parallelized photonic computing
a, Optical image of the 9 × 3 photonic EAM tensor core. The input light is 8.0-nm-bandwidth partially coherent light. Scale bar, 100 µm. b, Optical image of the bonded photonic EAM tensor core. The blue box indicates the region shown in a. c, Edge detection of digit ‘0’ using Sobel Gx and Sobel Gy filters. d,e, Convolution accuracy of using a partially coherent system without average (d) and with four-point average (e). A total of 100,000 pairs of expected and measured results are compared in both d and e. The insets show the Gaussian distribution of normalized errors. f, CNN architecture. g, Comparison of CNN classification results.
