Optical Injection-locked High-speed Heterogeneous Quantum-dot Microring Lasers

We demonstrate >6× modulation bandwidth extension of a heterogeneous quantum-dot microring laser using optical injection locking, obtaining 18 Gb/s on-off-keying modulation with clear open eyes. Single-mode lasing of all 11 longitudinal modes were achieved with >44 dB side-mode suppression and minimal 5 dB power increase.

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