Soliton crystal micro-combs are powerful tools as sources of multiple wavelength channels for radio frequency (RF) signal processing. They offer a compact device footprint, large numbers of wavelengths, very high versatility, and wide Nyquist bandwidths. Here, we demonstrate integral order RF signal processing functions based on a soliton crystal micro-comb, including a Hilbert transformer and first- to third-order differentiators. We compare and contrast results achieved and the tradeoffs involved with varying comb spacing, tap design methods, as well as shaping methods.
@article{arxiv.2110.12862,
title = {Integral order photonic RF and microwave signal processors based on soliton crystal Kerr micro-combs},
author = {Mengxi Tan and Xingyuan Xu and David J. Moss},
journal= {arXiv preprint arXiv:2110.12862},
year = {2021}
}