The optical frequency comb (OFC) is an important type of light source whose spectra consist of stable, discrete, and equally spaced frequency lines. With its massive parallelization capability and high coherency nature, OFC has great potential in diverse applications, including optical communications, LiDAR, optical computation, time-frequency metrology, optical spectroscopy, optical frequency synthesizers, and timekeeping.

Compared with the traditional fiber frequency combs, the integrated OFCs we are focusing on are not only more flexible in design, but also have great advantages in lowering the system size, weight, power consumption, and costs, which indicate greater potential in commercial areas.

The integrated OFCs we are working on include Kerr microcombs, supercontinuum, EO combs, and semiconductor mode-locked lasers.