Widely Tunable, Narrow Linewidth Quantum Dot Lasers Heterogeneously Integrated on Silicon

We demonstrate widely tunable, narrow linewidth, heterogeneous QD lasers utilizing Vernier ring resonators, setting a record for integrated lasers in the O-band with 47 nm tuning range, 52 dB SMSR, and 9.5 kHz Lorentzian linewidth.