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In this paper, the optical pulse response of 20 layer-stacked QD-SOAs grown on an InP(311)B substrate with the strain compensation technique by using picosecond pulses of an optical frequency comb was determined. It was found the QD-SOA could respond to ultrafast pulses with a minimum pulse interval of 4.2 ps without large pattern distortions.
We fabricated laser diodes containing highly stacked InAs quantum dots using the strain compensation technique, which showed laser emissions from 1.47 to 1.7 µm above the threshold current in pulsed mode.
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