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In this article, we evaluated the static and dynamic characteristics of 20‐layer stacked quantum dot semiconductor optical amplifiers (QD‐SOAs) grown on an InP(311)B substrate with a strain compensation technique by ultrafast signals using an optical frequency comb. The gain peak wavelength of the fabricated QD‐SOA was 1520 nm, and a maximum gain of approximately 15.8 dB was obtained when the injection...
High-speed optical data signal generation of >6.8 Gb/s with an error-free operation was successfully demonstrated using newly developed monolithically integrated quantum dot optical modulator and semiconductor optical amplifier operated in an ultra-broad optical frequency bandwidth.
Ultra-compact wavelength tunable laser diode with wide tunability was successfully developed with combining quantum dot optical amplifier and silicon micro-ring filters. The single mode laser oscillation was demonstrated with 25 nm wavelength tuning range.
A monolithically integrated quantum-dot (QD) optical gain modulator with semiconductor optical amplifier was developed for successful demonstration of error-free Gb/s-order high-speed, 10-km-long transmissions using 1.3-µm multiple wavelength channels from a QD comb laser.
Error-free Gbps-order high-speed optical data signal generation in a > 5.5-THz ultra-broad optical frequency bandwidth of the O-band was successfully demonstrated using a newly developed quantum dot electro-optic modulator integrated with a semiconductor optical amplifier.
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