Abstract:Optical frequency combs consists of a series of discrete and equidistant coherent lasers just like combs in the frequency domain, which has good application prospects in many fields such as optical clocks, ranging, spectral detection, coherent communication and other fields due to their wide spectrum, high coherence, and low phase noise. Microcavities provide a small and integrated platform for the generation of optical frequency combs, which makes microcombs attractive for researchers in recent years, especially for the highly-coherent dissipative Kerr soliton combs. The implementation of the vast majority of microcombs relies on homogeneous continuous wave driving. However, the inhomogeneous driving, such as pump in the presence of phase or amplitude inhomogeneities, has come into view owing to its specific advantages in soliton repetition control and energy conversion efficiency. In this article, the research progress of micro combs is reviewed. Specifically, an overview focusing on the generation and dynamics of dissipative Kerr soliton under inhomogeneous driving fields is provided. Future development trends and perspectives are also discussed. The inhomogeneous driving can improve the controllability and energy conversion efficiency of dissipative Kerr soliton, which gives the way for more microcomb applications