Journal ArticleDOI
The modulation response of a semiconductor laser amplifier
TLDR
In this paper, a theoretical analysis of the modulation response of a semiconductor laser amplifier is presented, where the role of the waveguide (scattering) loss is investigated in detail and is shown to influence the qualitative behavior of the response.Abstract:
We present a theoretical analysis of the modulation response of a semiconductor laser amplifier. We find a resonance behavior similar to the well-known relaxation oscillation resonance found in semiconductor lasers, but of a different physical origin. The role of the waveguide (scattering) loss is investigated in detail and is shown to influence the qualitative behavior of the response. In particular, it is found that a certain amount of waveguide loss may be beneficial in some cases. Finally, the role of the microwave propagation of the modulation signals is investigated and different feeding schemes are analyzed. The nonlinear transparent waveguide, i.e., an amplifier saturated to the point where the stimulated emission balances the internal losses, is shown to be analytically solvable and is a convenient vehicle for gaining qualitative understanding of the dynamics of modulated semiconductor optical amplifiers.read more
Citations
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Journal ArticleDOI
Gain dynamics studies of a semiconductor optical amplifier
TL;DR: In this article, the theoretically gain recovery dynamics in a semiconductor optical amplifier (SOA) when a short saturating pulse (pump) is either co-propagative or counter-probative with the probe are investigated.
Journal ArticleDOI
SOA-MZI-Based Nonlinear Optical Signal Processing: A Frequency Domain Transfer Function for Wavelength Conversion, Clock Recovery, and Packet Envelope Detection
TL;DR: In this paper, the frequency-domain transfer function of optical amplifier Mach-Zehnder interferometric (SOA-MZI) switches was analyzed and the necessary conditions for supporting different SOA-based nonlinear signal processing applications, such as wavelength conversion, packet envelope detection (PED), and clock recovery.
Journal ArticleDOI
On the output characteristics of a semiconductor optical amplifier driven by an ultrafast optical time division multiplexing pulse train
TL;DR: A comprehensive theoretical analysis of a semiconductor optical amplifier (SOA) that is subject to an ultrafast optical time division multiplexing pulse stream is presented with the help of a simple but efficient model, finding that low saturation is necessary for the former case whilst heavy saturation for the latter.
Journal ArticleDOI
Semiconductor Optical Amplifier-Enabled Intensity Modulation of Adaptively Modulated Optical OFDM Signals in SMF-Based IMDD Systems
TL;DR: In this article, a theoretical model describing the characteristics of the SOA-based intensity modulators is developed, based on which optimum SOA operating conditions are identified, and it is shown that the optimized SOAs-based intensifiers support a 30 Gb/s AMOOFDM signal transmission over a 80 km SMF, which doubles the transmission performance offered by directly modulated DFB lasers.
Journal ArticleDOI
A Mueller-Matrix Formalism for Modeling Polarization Azimuth and Ellipticity Angle in Semiconductor Optical Amplifiers in a Pump–Probe Scheme
Li-Qiang Guo,Michael J. Connelly +1 more
TL;DR: In this article, a Mueller-matrix approach is proposed to simulate the azimuth and ellipticity trajectory of a probe light in a tensile-strained bulk semiconductor optical amplifier.
References
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Journal ArticleDOI
All-optical wavelength conversion by semiconductor optical amplifiers
TL;DR: In this article, the influence of saturation filtering on the bandwidth of the converters is explained and conditions for conversion at 20 Gb/s or more are identified for monolithic integrated interferometric wavelength converters.
Journal ArticleDOI
Saturation effects in nondegenerate four-wave mixing between short optical pulses in semiconductor laser amplifiers
Antonio Mecozzi,Jesper Mørk +1 more
TL;DR: In this article, the authors present a simple, yet powerful method for calculating nonlinear pulse propagation and pulse interaction in active semiconductor waveguides based on the density matrix equations, which under realistic operation conditions are shown to lead to an accurate description of the material gain, that includes the dynamics of carrier heating and spectral-hole burning.
Journal ArticleDOI
Semiconductor laser amplifiers for ultrafast all-optical signal processing
TL;DR: In this article, the role of SLA carrier dynamics, which permits switching rates faster than the recovery time, has been highlighted for all-optical ultrafast signal processing, and experimental results imply that switching rates of as much as ∼100 GHz should be possible.
Journal ArticleDOI
Four-wave mixing in semiconductor optical amplifiers for frequency conversion and fast optical switching
Stefan Diez,C. Schmidt,Reinhold Ludwig,H. G. Weber,K. Obermann,S. Kindt,I. Koltchanov,Klaus Petermann +7 more
TL;DR: In this paper, the authors define general parameters that are of relevance for signal processing applications and show how basic experiments and general simulation procedures can be used to determine optimum operating conditions for the intended applications.
Journal ArticleDOI
All-optical wavelength conversion at bit rates above 10 Gb/s using semiconductor optical amplifiers
C. G. Joergensen,S.L. Danielsen,K.E. Stubkjaer,Michael Schilling,K. Daub,Pierre Doussiere,F. Pommerau,P.B. Hansen,Henrik N. Poulsen,A. Kloch,M. Vaa,B. Mikkelsen,E. Lach,Gert Laube,Wilfried Idler,Klaus Wunstel +15 more
TL;DR: In this article, the authors assess the prospects for high-speed all-optical wavelength conversion using the simple optical interaction with the gain in semiconductor optical amplifiers (SOAs) via the interband carrier recombination.
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