Journal ArticleDOI
Theory of four-wave mixing wavelength conversion in quantum dot semiconductor optical amplifiers
TLDR
In this paper, a detailed theoretical analysis of four-wave mixing (FWM) wavelength conversion in quantum dot semiconductor optical amplifier (QD-SOA) is presented, taking into account the effect of the multidiscrete QD energy levels and the wetting layer.Abstract:
Detailed theoretical analysis of four-wave mixing (FWM) wavelength conversion in quantum dot semiconductor optical amplifier (QD-SOA) is presented. The model takes into account the effect of the multidiscrete QD energy levels and the wetting layer. Good agreement between calculated and experimental data is obtained. Because of the discreteness of the energy levels, QD-SOAs demonstrate high FWM conversion efficiencies at high detuning frequency. Our calculations show that carrier escape from the ground state significantly affects the performance of the amplifier.read more
Citations
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Journal ArticleDOI
Gain dynamics and saturation in semiconductor quantum dot amplifiers
TL;DR: In this article, the authors analyzed the interplay of these two carrier populations in terms of a simple rate equation model based on the steady-state and small-signal properties of the model, and discussed the optical modulation response and four-wave mixing properties of QD semiconductor optical amplifiers.
Journal ArticleDOI
Designing of Optimized All-Optical Half Adder Circuit Using Single Quantum-Dot Semiconductor Optical Amplifier Assisted Mach-Zehnder Interferometer
TL;DR: In this article, a new and novel scheme for a high speed all-optical half adder based on single Quantum-dot semiconductor optical amplifier (QD-SOA) assisted Mach-Zehnder interferometer (MZI) is theoretically investigated and discussed.
Book
Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices
TL;DR: The Lingnau Nonlinear and Nonequilibrium Dynamics of Quantum-Dot Optoelectronic Devices and its Applications are presented as well as a Discussion of the Foundations of nonlinear and nonequilibriumynamics and their Applications in Electronics.
Journal ArticleDOI
Novel Closed-Form Model for Multiple-State Quantum-Dot Semiconductor Optical Amplifiers
TL;DR: In this article, a novel closed-form model for multiple-state quantum-dot semiconductor optical amplifiers (QD-SOAs) is derived, which takes into account the effect of the ground state, excited state and the wetting layer.
Journal ArticleDOI
Simple model for quantum-dot semiconductor optical amplifiers using artificial neural networks
Jehad Ababneh,Omar Qasaimeh +1 more
TL;DR: In this article, a simple, accurate, and fast multilayer feedforward artificial neural network (ANN) model for quantum-dot semiconductor optical amplifiers (QD-SOAs) is developed.
References
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Journal ArticleDOI
Ultrafast gain recovery and modulation limitations in self-assembled quantum-dot devices
TL;DR: In this paper, the quantum-dot (QD) excited state carriers were found to act as a reservoir for the optically active ground state carriers resulting in an ultrafast gain recovery as long as the excited state is well populated.
Journal ArticleDOI
Spectral hole-burning and carrier-heating dynamics in InGaAs quantum-dot amplifiers
Paola Borri,Wolfgang Werner Langbein,Jørn Märcher Hvam,Frank Heinrichsdorff,Ming-Hua Mao,Dieter Bimberg +5 more
TL;DR: In this paper, the spectral hole-burning and carrier heating were investigated in detail in a set of InAs-InGaAs-GaAs quantum-dot (QD) amplifiers with femtosecond resolution.
Journal ArticleDOI
Four-wave mixing in traveling-wave semiconductor amplifiers
TL;DR: In this paper, the traveling-wave equations of four-wave mixing in semiconductor amplifiers are solved analytically including saturation of the amplifier, and excellent agreement is obtained with numerical solutions of the travelingwave equations.
Journal ArticleDOI
Symmetric highly efficient (/spl sim/0 dB) wavelength conversion based on four-wave mixing in quantum dot optical amplifiers
Tomoyuki Akiyama,Haruhiko Kuwatsuka,Nobuaki Hatori,Yoshiaki Nakata,Hiroji Ebe,Mariko Sugawara +5 more
TL;DR: In this paper, a reduction in linewidth enhancement factor due to the discreteness of the electron states in quantum dots is attributed to the reduction of the linearly-enhanced electron states.
Journal ArticleDOI
Broad-band wavelength conversion based on cross-gain modulation and four-wave mixing in InAs-InP quantum-dash semiconductor optical amplifiers operating at 1550 nm
A. Bilenca,R. Alizon,V. Mikhelashhvili,David Dahan,Gadi Eisenstein,R. Schwertberger,D. Gold,Johann Peter Reithmaier,Alfred Forchel +8 more
TL;DR: In this article, a 1550-nm InAs-InP quantum-dash semiconductor optical amplifier with four-wave mixing (FWM) and cross-gain modulation (XGM) was used for short-pulse wavelength conversion over 10 THz and error-free data conversion of a 2.5Gb/s data sequence over 7.5 THz.