Microcomb technologies are still emerging, and many phenomena are only just being discovered with the underlying physics still being debated. Current microcombs can be used for proof-of-concept demonstrations, however they lack the efficiency, stability, simplicity, and reliability needed for real-world applications.

Further, integrated comb systems with the ability to manipulate and detect each individual comb line are required. Finally, microcombs have yet to be realised at visible and mid-infrared wavelengths needed for astronomy, biomedical imaging, and gas sensing.