Quantifying the Accuracy of Microcomb-Based Photonic RF Transversal Signal Processors

Photonic RF transversal signal processors, which are equivalent to reconfigurable electrical digital processors but implemented with photonic technologies, have been widely used for modern high-speed information processing. With the capability of generating large numbers wavelength channels compact micro-resonators, optical microcombs bring new opportunities realizing that greatly reduced size, power consumption, and complexity. Recently, a variety processing functions demonstrated using microcomb-based processors. Here, we provide detailed analysis quantifying accuracy First, investigate theoretical limitations determined by tap number, bandwidth, pulse waveform. Next, discuss practical error sources from different components Finally, analyze contributions experimental factors overall inaccuracy both theoretically experimentally. These results useful guide designing optimize their accuracy.