Chip-Based High-Dimensional Optical Neural Network

Highlights High-dimensional optical neural network is achieved by introducing an on-chip soliton microcomb source and wavelength division multiplexing technique. The programmable electro-optic nonlinear layer and optical meshes promote the implementation of a multi-layer optical neural network. Ultra-low coupling loss is realized between functional chips and fiber array, which is around 1 dB per facet.