Journal ArticleDOI
All-optical latches based on two-photon absorption in semiconductor optical amplifiers
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TLDR
In this paper, the design and performance of two optical latches, the set-reset (S-R) latch and D flip-flop, have been studied for input data signals with high intensity, configured in the form of a Mach-Zehnder interferometer.Abstract:
The design and performance of two optical latches, the set–reset (S-R) latch and D flip-flop have been studied. These latches are the building blocks of large optical processors. The latches are built using two optical logic operations NAND and NOT. Both NAND and NOT operations are realized by using the ultrafast phase response during two-photon absorption process in semiconductor optical amplifiers. Rate equations for semiconductor optical amplifiers, for input data signals with high intensity, configured in the form of a Mach–Zehnder interferometer, have been solved. The input intensities are high enough that the two-photon induced phase change is larger than the regular gain induced phase change. Results show that this scheme can realize the functions of the S-R latch and D flip-flop at high speeds (∼250 Gb/s) with good signal-to-noise ratio.read more
Citations
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Quantum-Dot Semiconductor Optical Amplifiers
TL;DR: This paper reviews the recent progress of quantum-dot semiconductor optical amplifiers developed as ultrawideband polarization-insensitive high-power amplifiers, high-speed signal regenerators, and wideband wavelength converters and suggests a potential for low-cost realization of regenerative transmission systems.
Journal ArticleDOI
High-speed all-optical encryption and decryption based on two-photon absorption in semiconductor optical amplifiers
TL;DR: Results show that this scheme can realize all-optical encryption and decryption by using key-stream generators at high speed up to 250 Gb/s.
Journal ArticleDOI
All-optical NOR and XNOR logic gates at 2 Tb/s based on two-photon absorption in quantum-dot semiconductor optical amplifiers
TL;DR: In this paper, the performance of all-optical Not-OR (NOR) and exclusive-NOR (XNOR) logic gates, incorporating in Mach-Zehnder interferometers at a data rate of 2 Tb/s, was evaluated and examined.
Proceedings ArticleDOI
A Comparative Study on the Recent Smart Mobile Phone Processors
TL;DR: The distinctive features, merits, and demerits of the latest mobile phone processors of different Tech companies are discussed.
Journal ArticleDOI
High Speed All-Optical Logic Gate Using QD-SOA and its Application
Hongyu Hu,Xiang Zhang,Shuai Zhao +2 more
TL;DR: Results show that the scheme based on QD-SOA is a promising method for the realization of high-speed all-optical communication system in the future.
References
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Journal ArticleDOI
All-optical XOR gate using semiconductor optical amplifiers without additional input beam
TL;DR: In this paper, a cross-gain modulation of semiconductor optical amplifiers has been proposed and demonstrated successfully at 10 Gb/s for all-optical XOR gates.
Journal ArticleDOI
Quantum-Dot Semiconductor Optical Amplifiers
TL;DR: In this article, a quantum-dot semiconductor optical amplifier with a gain of 25 dB, noise figure of 20 dBm, over the record widest bandwidth of 90 nm among all kinds of optical amplifiers, and also having a penalty-free output power of 23 dBm was realized by using quantum dots.
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
Study of all-optical XOR using Mach-Zehnder Interferometer and differential scheme
Qiang Wang,Guanghao Zhu,Hongmin Chen,J. Jaques,Juerg Leuthold,A. B. Piccirilli,Niloy K. Dutta +6 more
TL;DR: In this paper, an integrated SOA-based Mach-Zehnder interferometer (SOA-MZI) at 20 and 40 Gb/s was used for all-optical XOR functionality.
Quantum-Dot Semiconductor Optical Amplifiers
TL;DR: This paper reviews the recent progress of quantum-dot semiconductor optical amplifiers developed as ultrawideband polarization-insensitive high-power amplifiers, high-speed signal regenerators, and wideband wavelength converters and suggests a potential for low-cost realization of regenerative transmission systems.