Frequency combs articles from across Nature Portfolio

By tuning the spatial width, the strength and the frequency of a pump beam in two-dimensional cylindrical microcavities supporting stable, robust photonic snake states, a set of broadband and perfectly synchronized two-dimensional frequency combs can be realized.

Kerr optical frequency combs are extensively explored for their potential capabilities in fields such optical communication, spectroscopy, and sensing. This work theoretically analyses the role of phase noise in comb generation dynamics through a stochastic approach, which can impact future studies of frequency comb sources.

Boosting conversion efficiency, coherence and spectral bandwidth of optical signals generated in integrated photonic devices is an important current challenge. Here, the authors present their observations of two-colour dissipative solitons, breathers and frequency combs resulting from second-harmonic generation in lithium-niobate ring microresonators.

Dual frequency combs are a powerful tool for a range of optical measurements and technologies. The authors here generate orthogonally polarized dual combs with exceptionally high relative stability.

A clock distribution network (CDN) is a ubiquitous element that provides synchronized clocks to all circuit blocks in the chip. Here the authors demonstrate femtosecond-precision distribution of clocks in CMOS chips using optical frequency combs and driverless CDNs.