Recently, the collaborating work titled “Platicon microcomb generation using laser self-injection locking” led by EPFL was published in the journal Nature Communication.

This work uses laser self-injection locking to demonstrate a fully integrated platicon microcomb operating at a microwave K-band repetition rate. A distributed feedback (DFB) laser edge-coupled to a Si3N4 chip is self-injection-locked to a high-Q micro resonator with high confinement waveguides, and directly excites platicons without sophisticated active control. The work demonstrates multi-platicon states and switching, perform optical feedback phase study and characterizes the K-band platicon repetition rate and the phase noise of the pump laser.