Electrically Driven Photonic Integrated Soliton Microcomb

We demonstrate via self-injection locking an electrically driven soliton micro-comb by coupling a multi-frequency laser diode to a chip-scale high-Q Si
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microresonator. This approach offers a pathway for an integrated and ultra-compact microcomb source for high-volume applications e.g. coherent telecommunication and data-center interconnects.