Title :
Semiconductor Optical Amplifier Based on a Quantum Dot-in-a-Well (QDWELL) Structure Under Optical Pumping
Author :
Ben Ezra, Y. ; Lembrikov, B.I.
Author_Institution :
Fac. of Electr. Eng., Electron. & Commun., Holon Inst. of Technol., Holon, Israel
Abstract :
We investigated theoretically dynamics of a semiconductor optical amplifier (SOA) based on the quantum dot-in-a-well (QDWELL) structure. We modified the QDWELL laser rate equations for the case of SOA and solved the modified equation system numerically. We have shown that a strong pumping optical wave in the QDWELL SOA synchronizes the QD carrier dynamics, which results in the enhancement of the QDWELL SOA bandwidth and repetition frequency, fast gain recovery, cross-gain modulation, and chirp decrease.
Keywords :
chirp modulation; numerical analysis; optical modulation; optical pumping; quantum dot lasers; quantum well lasers; semiconductor optical amplifiers; QD carrier dynamics; QDWELL SOA bandwidth; QDWELL laser rate equations; chirp modulation; cross-gain modulation; gain recovery; pumping optical wave; quantum dot-in-a-well structure; repetition frequency; semiconductor optical amplifier; Charge carrier processes; Equations; Optical pulses; Optical pumping; Optical scattering; Semiconductor optical amplifiers; Quantum dot (QD); quantum well (QW); semiconductor optical amplifier (SOA);
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2014.2308393
