Quantum dot (QD) based microdisk/microring lasers have attracted attention as promising candidates for on-chip optical interconnects since they offer small footprint, high-temperature stability and in-plane light emission. An important property required for a laser intended for optical communication is high-frequency direct modulation. Edge emitting QD-based lasers on GaAs demonstrated promising modulation characteristics with a -3 dB modulation bandwidth in excess of 7.4 GHz . Meanwhile, there are practically no reports on the dynamic characteristics of QD-based microdisk/microring lasers.
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