Simulative Approach to Realize All Optical-Frequency-Encoded Dibit-Based Integrated Logic Gates

Abstract

Optics is considered a potential candidate for the realization of logic devices, digital optical systems for communication, and computation exploiting its super-fast speed. Optical logic gates also can act on the basis of frequency conversion process of some nonlinear materials. Further, in this chapter, the authors have mentioned the dibit representation technique for reducing bit error problem at the input and output terminals of all optical digital logic circuits and a control input for selecting particular logic operation. Here the authors have proposed frequency encoded all optical dibit-based integrated AND and OR logic gates with control input, where a single circuit acts as both AND logic gate and OR logic gate using the optical switches like reflected semiconductor optical amplifier and add/drop multiplexer.