  We propose a system of coupled microring resonators for the generation
frequency combs and dissipative Kerr solitons in silicon at telecommunication
frequencies. By taking advantage of structural slow-light, the effective
non-linearity of the material is enhanced, thus relaxing the requirement of
ultra-high quality factors that currently poses a major obstacle to the
realization of silicon comb devices. We demonstrate a variety of frequency comb
solutions characterized by threshold power in the 10-milliwatt range and a
small footprint of $0.1$ mm$^2$, and study their robustness to structural
disorder. The results open the way to the realization of low-power compact comb
devices in silicon at the telecom band.
