All-optical XNOR and AND gates simultaneously realized in a single semiconductor optical amplifier with improved dynamics
Li Pei-Li(李培丽)a)b)†, Huang De-Xiu(黄德修)a), Zhang Xin-Liang(张新亮)a), and Zhu Guang-Xi(朱光喜)a)b)
a Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China; b Department of Electronics and Information, Huazhong University of Science andTechnology, Wuhan 430074, China
Abstract All-optical XNOR and AND logic gates using four-wave mixing (FWM) and cross-gain modulation (XGM) in a single semiconductor optical amplifier (SOA) with improved dynamics are simultaneously realized. By numerical simulation, the effects of the input optical wave powers and injection current on the critical factors of the logic gate performances, such as the ON--OFF contrast ratio, the power-output level of the logic `1', and the difference between power outputs of the logic `1', are investigated in detail. In addition, the effect of the counter-propagating CW pump on the gain recovery is analysed.
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60407001) and the
National Science Foundation for Post-doctoral Scientists of China
(Grant No 20060390246).
Cite this article:
Li Pei-Li(李培丽), Huang De-Xiu(黄德修), Zhang Xin-Liang(张新亮), and Zhu Guang-Xi(朱光喜) All-optical XNOR and AND gates simultaneously realized in a single semiconductor optical amplifier with improved dynamics 2007 Chinese Physics 16 3719
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