All optical logic gates based on two-photon absorption

2010 ◽  
Author(s):  
S. Ma ◽  
A. Kotb ◽  
Z. Chen ◽  
N. K. Dutta
Keyword(s):  
Logic Gates ◽  
Photon Absorption ◽  
Optical Logic ◽  
Two Photon Absorption ◽  
Optical Logic Gates ◽  
Two Photon ◽  
All Optical

Influence of two-photon absorption and free-carrier effects on all-optical logic gates in silicon waveguides

2019 ◽  
Vol 12 (4) ◽  
pp. 042005
Author(s):  
Wei Wu ◽  
Qibing Sun ◽  
Leiran Wang ◽  
Guoxi Wang ◽  
Chao Zeng ◽  
...  
Keyword(s):  
Logic Gates ◽  
Free Carrier ◽  
Photon Absorption ◽  
Optical Logic ◽  
Silicon Waveguides ◽  
Two Photon Absorption ◽  
Optical Logic Gates ◽  
Two Photon ◽  
All Optical

scholarly journals Performance of All-Optical XNOR Gate Based on Two-Photon Absorption in Semiconductor Optical Amplifiers

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Amer Kotb
Keyword(s):  
Optical Amplifiers ◽  
Input Pulse ◽  
Semiconductor Optical Amplifiers ◽  
Photon Absorption ◽  
Optical Logic ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Xnor Gate ◽  
All Optical ◽  
The Impact

All-optical logic XNOR gate is realized by a series combination of XOR and INVERT gates. This Boolean function is realized by using Mach-Zehnder interferometers (MZIs) and exploiting the nonlinear effect of two-photon absorption (TPA) in semiconductor optical amplifiers (SOAs). The employed model takes into account the impact of amplified spontaneous emission (ASE), input pulse energy, pulsewidth, SOAs carrier lifetime, and linewidth enhancement factor (α-factor) on the gate’s output quality factor (Q-factor). The outcome of this study shows that the all-optical XNOR gate is indeed feasible with the proposed scheme at 250 Gb/s with both logical correctness and acceptable quality.

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