Title :
Specific Features of XGM in QD-SOA
Author :
Ezra, Yosef Ben ; Lembrikov, B.I. ; Haridim, M.
Author_Institution :
Holon Inst. of Technol., Holon
Abstract :
The peculiarities of a cross-gain modulation (XGM) in quantum-dot semiconductor optical amplifier (QD SOAs) related to the inhomogeneous broadening are theoretically studied. We have solved numerically the electron rate equations for the QD SOA model including an excited state, a ground state and a continuum wetting layer (WL), and the propagation equations for the pump and the signal lightwaves. It is shown that XGM in QD SOA is possible for a comparatively large detuning close to the inhomogeneous broadening because in such a case QDs with substantially different resonant frequencies interact directly through WL.
Keywords :
excited states; ground states; light propagation; optical modulation; quantum dot lasers; semiconductor optical amplifiers; QD-SOA; XGM; continuum wetting layer; cross-gain modulation; electron rate equations; excited state; ground state; inhomogeneous broadening; propagation equations; quantum-dot semiconductor optical amplifiers; signal lightwaves; Nonlinear optics; Optical distortion; Optical mixing; Optical modulation; Optical pumping; Optical signal processing; Optical wavelength conversion; Quantum dots; Semiconductor optical amplifiers; Stimulated emission; Cross-gain modulation (XGM); optical networks; quantum dot (QD); semiconductor optical amplifier (SOA); wavelength conversion (WC);
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.901587
