Multi-Ring Mirror-Based Narrow-Linewidth Widely-Tunable Lasers in Heterogeneous Silicon Photonics

We designed and fabricated narrow-linewidth widely-tunable lasers with multiring mirrors. A laser using a triple-ring mirror with 55 dB average SMSR across 30 nm tuning range and a record narrow linewidth of 17.5 kHz was demonstrated in heterogeneous silicon photonics.

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