Optical and Quantum Electronics

, Volume 45, Issue 6, pp 473–480 | Cite as

NOR gate based on QD-SOA at 250 Gbit/s

  • Amer Kotb


The performance of all-optical logic NOR gate based on quantum-dot- semiconductor optical amplifier (QD-SOA) is simulated. By solving the rate equations of QD-SOAs when incorporated in the arms of a Mach–Zehnder interferometer the performance of NOR gate is numerically investigated. The model takes into account the impact of the amplified spontaneous emission, the input pulse energy and the injection current density on the system’s quality factor. Results show that NOR gate using QD-SOA is capable of operating at speeds of 250 Gbit/s with proper quality-factor.


Optical logic Quantum dot Semiconductor optical amplifier  Mach–Zehnder interferometer 



The author would like to thank the editor of the journal and anonymous referees for the important comments that helped me to improve the content of this paper.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of PhysicsFayoum UniversityFayoumEgypt
  2. 2.Department of PhysicsNorthern Borders UniversityArarKSA

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