Abstract
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.