The invention discloses an optical
signal processing method, a photonic neural network
chip, and a design method of the
chip. The optical
signal processing method comprises the following steps: determining to-be-processed data and a target modulation range of an optical
signal; modulating the initial input optical signal according to the to-be-processed data and the target modulation range to obtain a target input optical signal; performing parallel
convolution calculation based on the target input optical signal to obtain a target output optical signal; and performing signal conversion on the target output optical signal to obtain an output
electric signal, and executing corresponding
processing operation according to the output
electric signal. An operation module in the photonic neural network
chip provided by the embodiment of the invention adopts an optical
matrix multiplier, an accumulator and a
nonlinear optical element to realize
convolution parallel calculation of the same layer, so that the network operation efficiency is greatly improved, and the
advantage of high operation speed of an optical
simulation accelerator is fully embodied. And meanwhile, in cooperation with electrical storage and control, a multilayer
optical neural network is constructed, and mature popularization of the
optical neural network is promoted.