Science Alert   October 25, 2022 As essential core technologies for optical fibre communication are approaching their limits of size, speed and energy-efficiency, there is a need for new technologies that offer further scaling of data transmission capacity. An international team of researchers (Denmark, Sweden, Japan) has shown that a single optical frequency-comb source based on a silicon nitride ring resonator supports data capacities in the petabit-per-second regime. They experimentally demonstrated transmission of 1.84 Pbit s–1 over a 37-core, 7.9-km-long fibre using 223 wavelength channels derived from a single microcomb ring resonator producing a stabilized dark-pulse Kerr frequency comb. They presented a theoretical […]