scholarly journals Simultaneous Realization of Wavelength Conversion, 2R Regeneration, and All-Optical Multiple Logic Gates with OR, NOR, XOR, and XNOR Functions Based on Self-Polarization Rotation in a Single SOA: An Experimental Approach

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
Youssef Said ◽  
Houria Rezig
Keyword(s):  
Wavelength Conversion ◽  
Power Level ◽  
Polarization State ◽  
Optical Power ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Polarization Rotation ◽  
Optical Logic ◽  
All Optical ◽  
2R Regeneration

We highlight the feasibility of experimental implementation of both inverted and noninverted wavelength conversion, 2R regeneration, and all-optical logic functions, such as OR, NOR, XOR, and XNOR optical gates by exploiting the self-polarization rotation in a semiconductor optical amplifier (SOA) device without changing the setup configuration. Switching between each optical function is done by only adjusting the input optical power level. In order to allow optimum control and preserve the polarization state of the injected and collected signals, the polarimetric measures have been carried out in free space.

Frequency Encoded All Optical Tri-state Logic Gates NOT and NAND Using Semiconductor Optical Amplifier Based Interferometric Switches

2020 ◽  
Vol 10 (4) ◽  
pp. 369-380
Author(s):  
K. Maji ◽  
K. Mukherjee ◽  
A. Raja
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Extinction Ratio ◽  
Optical Power ◽  
Logic Gates ◽  
Optical Amplifier ◽  
All Optical ◽  
State Frequency ◽  
Spontaneous Noise ◽  
First Time ◽  
Practical Feasibility

All optical tri-state frequency encoded logic gates NOT and NAND are proposed and numerically investigated using TOAD based interferometric switch for the first time to the best of our knowledge. The optical power spectrum, extinction ratio, contrast ration, and amplified spontaneous noise are calculated to analyze and confirm practical feasibility of the gates. The proposed device works for low switching energy and has high contrast and extinction ratio as indicated in this work.

All-Optical Logic Gates Based on Quantum-Dot Semiconductor Optical Amplifier

2018 ◽  
Vol 27 (01n02) ◽  
pp. 1840013 ◽  
Author(s):  
Xiang Zhang ◽  
Sunil Thapa ◽  
Niloy K. Dutta
Keyword(s):  
Quantum Dot ◽  
Semiconductor Optical Amplifier ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Boolean Logic ◽  
Photon Absorption ◽  
Hole Burning ◽  
Optical Logic ◽  
Logic Operation ◽  
All Optical

We propose a scheme to realize all-optical logic operation in quantum-dot semiconductor optical amplifier (QD-SOA) based Mach-Zehnder interferometer (MZI) considering the effects of two-photon absorption (TPA). During propagation of sub-picosecond pulses in QD-SOA, TPA leads to an additional change in carrier recovery dynamics in quantum-dots. We utilize a rate equation model to take into account carrier refill through TPA and nonlinear dynamics including carrier heating and spectral hole burning in the QD-SOA. The simulation results show the TPA induced pumping in the QD-SOA can reduce the pattern effect and increase the output quality of the all-optical logic operation. With TPA, this scheme is suitable for high speed Boolean logic operation at 320 Gb/s.

scholarly journals All-Optical Logic Gates: Designs, Classification, and Comparison

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Pallavi Singh ◽  
Devendra Kr. Tripathi ◽  
Shikha Jaiswal ◽  
H. K. Dixit
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Current Status ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
All Optical ◽  
Optical Gates

The paper reviews the current status and designs of all-optical gates. Various schemes with and without semiconductor optical amplifiers are discussed and compared. The optical gates are classified according to their design structures. It is divided into two major divisions that is, nonsemiconductor optical amplifier based gates and semiconductor optical amplifier based gates. In nonsemiconductor optical amplifier based gates, different schemes have been proposed to create non-linearity which is discussed. The semiconductor optical amplifier based gates of different design structures are discussed to show the probe pulse that is modulated in different ways to obtain results.

All-optical logic gates based on wavelength conversion in a nonlinear directional coupler

2015 ◽  
Vol 354 ◽  
pp. 246-249
Author(s):  
Qiliang Li ◽  
Zhen Zhang ◽  
Shuqin Li ◽  
Miao Hu ◽  
Yizhen Wei ◽  
...  
Keyword(s):  
Directional Coupler ◽  
Wavelength Conversion ◽  
Logic Gates ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
All Optical ◽  
Nonlinear Directional Coupler

Evaluating RSOA Performance with Optical Logic Gates at 100 Gbps Data Rate

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Devendra Kr. Tripathi
Keyword(s):  
Carrier Density ◽  
Extinction Ratio ◽  
Optical Computing ◽  
Logic Gates ◽  
Optical Amplifier ◽  
Data Rate ◽  
Optical Logic ◽  
Active Length ◽  
Optical Logic Gates ◽  
All Optical

AbstractAll optical logic gates are the key elements of contemporary optical computing unit. For that non-linear attribute of reflective semiconductor optical amplifier (RSOA) is exploited to configure optical logic gates. Accordingly, in the manuscript all optical OR/NOR/Buffer binary logic network for the nonreturn to zero format has been designed. Its operation at 100 Gbps data rate has been successfully realized. For the applied data inputs in nonreturn to zero patterns, their corresponding output waveforms for the stated logic action have been verified. Numerical investigations for the imperative design constraints as data rate, injected power and imperative elements of the semiconductor optical amplifiers (SOAs) pump current, carrier density, active length, confine factor, laser power has been appropriately executed with optimum performance. It has depicted good extinction ratio (>10 dB) performance with confine factor more than 0.2 and higher carrier density of amplifier. Further, it also accomplished, that for the OR, buffer logic execution with lower power of pump laser and for the NOR logic execution higher power laser pump source is required. The proposed design could fulfill need for the impending higher data rate composite optical computing units.

scholarly journals All-optical 2R regeneration based on polarization rotation in a linear optical amplifier

2003 ◽  
Vol 15 (2) ◽  
pp. 305-307 ◽  
Author(s):  
Mingshan Zhao ◽  
J. De Merlier ◽  
G. Morthier ◽  
R. Baets
Keyword(s):  
Optical Amplifier ◽  
Polarization Rotation ◽  
All Optical ◽  
Linear Optical ◽  
2R Regeneration
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