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Wide bandwidth TM tunable vernier rings for heterogeneously integrated lasers

Henry, Nathan C.; Martinez, William M.; Sovinec, Courtney L.H.; Friedmann, Thomas A.; Arterburn, Shawn C.; Starbuck, Andrew L.; Dallo, Christina M.; Pomerene, Andrew; Kodigala, Ashok

We present a novel design of a III-V-on-silicon heterogeneously integrated tunable ring laser, achieving >80 nanometers of tuning bandwidth, the widest conceived using only two rings, fostering many applications such as spectroscopy and beam steering.