All optical Majority gate using Quantum dot SOA based Tera hertz Optical Asymmetric Demultiplexer (TOAD)

Abstract

This paper describes design and analysis of all-optical majority gate. Modifications of the design in comparison to conventional design using three AND gates have improved the performance as far as optical majority gate is concerned. The control power the TOAD is optimized by calculating different performance indicating parameters and noise characteristics is also investigated. Optimized values of extinction ratio (~16 dB), amplitude modulation (~0.1dB), quality factor (~20 dB), contrast ratio (~20 dB), and relative eye opening (>97%) show overall efficient performance of the device. The operating speed of the device is 1Tb/s.