A new approach of developing all-optical two-bit-binary data multiplier

The demand of frequency encoded data based communication technology increases rapidly due to its inherent constancy throughout the communication of the signal. In this article the authors propose a new approach of developing all-optical two-bit binary data multiplier using frequency encoded binary data bits. The authors develop a unique method to design all optical AND logic gate and half adder circuit which are the basic building blocks of the multiplier circuit using nonlinear switching action and frequency conversion properties of semiconductor optical amplifier (SOA). Finally, the authors present the method to design two-bit-binary multiplier circuit. Simulation results reflect the feasibility of the proposed scheme. Efficient frequency conversion process, and, faster polarization switching of SOA with frequency encoded data offers bit error free secure multiplication operation with faster speed of processing.