Error analysis of a 3-Layer SOA-based photonic deep neural network for image classification

We demonstrate Iris flower classification with a trained 3-layer photonic deep neural network, which is implemented by a monolithically integrated SOA-based InP cross-connect chip, achieving a final accuracy of 85.8%. An in-depth analysis of the error evolution in the system suggests that the E/O conversions from layer to layer contribute to the majority of the error.