Journal ArticleDOI
Ultrafast All-Optical Half Adder Using Quantum-Dot Semiconductor Optical Amplifier-Based Mach-Zehnder Interferometer
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TLDR
In this article, a new and alternative scheme for all-optical half adder using two QD-SOA-based Mach-Zehnder interferometers is theoretically investigated and demonstrated.Abstract:
Interferometric devices have drawn a great interest in all-optical signal processing for their high-speed photonic activity. Quantum-dot semiconductor optical amplifier (QD-SOA)-based gate has added a new momentum in this field to perform all-optical logic and algebraic operations. In this paper, a new and alternative scheme for all-optical half adder using two QD-SOA-based Mach-Zehnder interferometers is theoretically investigated and demonstrated. The proposed scheme is driven by the pair of input data streams for one switch between which the Boolean xor function is to be executed to produce sum-bit. Then the output of the first switch and one of the input data are utilized to drive the second switch to produce carry-bit. The impact of the peak data power as well as of the QD-SOAs current density, small signal gain, and QD-SOAs length on the ER and Q-factor of the switching outcome are explored and assessed by means of numerical simulation. The operation of the system is demonstrated with 160 Gbit/s.read more
Citations
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Journal ArticleDOI
Concurrent implementation of all-optical half-adder and AND & XOR logic gates based on nonlinear photonic crystal
TL;DR: In this article, a nonlinear photonic crystal ring resonator has been proposed for concurrent implementation of all-optical half-adder and AND & XOR logic gates based on the finite different time domain and plane wave expansion methods.
Journal ArticleDOI
Implementation of full-adder and full-subtractor based on electro-optic effect in Mach–Zehnder interferometers
TL;DR: In this paper, the optical switching phenomena has been studied and its efficient application to construct the fulladder/subtractor (A/S) has been projected and the mathematical description of proposed device and thereafter compilation using MATLAB.
Journal ArticleDOI
All-Optical XOR Gate Using Single Quantum-Dot SOA and Optical Filter
TL;DR: In this paper, an all-optical XOR gate for 160 Gb/s return-to-zero data signals using a single quantum-dot semiconductor optical amplifier assisted by a detuned optical filter was proposed.
Journal ArticleDOI
Design of micro-ring resonator based all-optical parity generator and checker circuit
TL;DR: A single circuit consisting of 4 micro-ring resonators capable to perform 3 bit parity generator and checker operations is studied and reported, which makes proposed circuit design compact, simple and will be helpful in designing all optical integrated circuit in future.
Journal ArticleDOI
Micro-ring resonator based all-optical reconfigurable logic operations
TL;DR: The proposed circuit can perform any of the four digital logic operations (NOT, NOR, XOR, AND) by using the appropriate optical pump signal at the selection port of the multiplexer.
References
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Journal ArticleDOI
Semiconductor optical amplifier-based all-optical gates for high-speed optical processing
TL;DR: In this paper, the progress from simple gates using cross-gain modulation and four-wave mixing to the integrated interferometric gates using a cross-phase modulation is reviewed, which is very efficient for high-speed signal processing and open up interesting new areas, such as all-optical regeneration and high-time logic functions.
Journal ArticleDOI
Theory of optical signal amplification and processing by quantum-dot semiconductor optical amplifiers
M. Sugawara,Hiroji Ebe,N. Hatori,M. Ishida,Yasuhiko Arakawa,Tomoyuki Akiyama,Koji Otsubo,Yoshiaki Nakata +7 more
TL;DR: In this paper, a theory of optical signal amplification and processing by quantum-dot semiconductor optical amplifiers (SOA's) based on the density matrix equations to treat electron-light interaction and the optical pulse propagation equations is presented.
Journal ArticleDOI
All-optical multiple logic gates with XOR, NOR, OR, and NAND functions using parallel SOA-MZI structures: theory and experiment
TL;DR: In this paper, the authors proposed, simulated, and experimentally demonstrated all-optical multiple logic gates using two parallel semiconductor optical amplifier (SOA)-Mach-Zehnder interferometer (MZI) structures that enable simultaneous operations of various logic functions of XOR, NOR, OR and NAND.
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.
Journal ArticleDOI
Saturation and noise properties of quantum-dot optical amplifiers
T.W. Berg,Jesper Mørk +1 more
TL;DR: In this paper, it is shown that amplified spontaneous emission acts to decrease the inversion of the wetting layer states, thus helping to quench the gain of these states, which might otherwise dominate.