Design of All-Optical Universal Gates and Verification of Boolean Expression using SOA-MZI

Advanced next generation optical networks demands all optical logic devices as the key element. In this paper, the mechanism of co-propagating MZI configuration along with SOA is opted to design the universal gates and execution of various Boolean expression are carried out with the aid of proposed NAND, NOR and NOT gates. The two non-linearity property XGM and XPM of SOA is exploited to obtain logic outputs, optimum values for the design of logic gates are obtained by varying different modulating signals and operating wavelength. Correct logic functions and high quality of the output signals can be achieved and proved with the help of extinction ratio, clear eye opening diagram and bit error rate (BER) measurements.