Photonic convolutional accelerator and neural network in the Tera-OPs regime based on Kerr microcombs
Mike Xu, Mengxi Tan, Bill Corcoran, Jiayang Wu, andreas boes, thach Nguyen, Sai T. Chu, Brent Little, Damien Hicks, Roberto Morandotti, Arnan Mitchell, David J. Moss · 2021
We report a photonic RF arbitrary waveform generator and phase encoded signal generator using a soliton crystal micro-comb source with a free spectral range (FSR) of 48.9 GHz, that provides 80 wavelengths. We achieve arbitrary waveform shapes including square waveforms with a tunable duty ratio from 10% to 90%, sawtooth waveforms with a slope ratio of 0.2 to 1, and a symmetric concave quadratic chirp waveform with an instantaneous frequency of sub GHz. The phase encoded signal generator achieves a high pulse compression ratio of 30 and phase encoding rates from 2 to 6 Gb/s This work verifies the effectiveness of using microcombs for high-performance, broad bandwidth, nearly user-defined RF waveform generation.