Abstract: The present invention discloses a two-dimensional photonic neural network convolutional acceleration chip based on series connection structure, which is integrated with a modulator, M microring delay weighting units, M?1 secondary delay waveguide, a wavelength-division multiplexer and a photodetector.

Abstract: The present invention discloses a two-dimensional photonic neural network convolutional acceleration chip based on series connection structure, which is integrated with a modulator, M microring delay weighting units, M?1 secondary delay waveguide, a wavelength-division multiplexer and a photodetector.

Abstract: The present invention discloses a two-dimensional photonic convolutional acceleration system and device for convolutional neural network, comprising: a multi-wavelength light source, a signal source to be convolved, a modulator, a dispersion module, a 1×M power divider, an optical fiber delay array, a microring weighting array chip, a convolutional kernel matrix control unit, a trans-impedance amplifier array, and an acquisition and processing unit. The present invention realizes two-dimensional convolutional acceleration based on wavelength-time interleaving technology, a single modulator can realize the optical domain loading of the signal, and the convolutional operation speed is only limited to the speed of the modulator.

Abstract: Discloses a coherent microwave photonics radar detection method and system based on injection locking frequency multiplication. The method uses a baseband signal to modulate an optical carrier to generate a modulated optical signal including a plurality of high-order sidebands; the modulated optical signal is divided into two paths which are respectively injected into two slave lasers for high-order sideband injection locking to obtain two locked sideband optical signals; Based on combining and splitting two locked sideband optical signals, the radar transmitting signal and receiving optical signal can be obtained through photo-detection and electro-optic modulation. After coherent detection of receiving optical signal, obtaining the intermediate frequency signal, and detection target information can be extracted from intermediate frequency signal by radar algorithm.