Design and Analysis of Chiral MZI Based All-Optical Galois Field Adder

The design of a Chiral Mach-Zehnder interferometer based 4-bit all-optical Galois field adder operating at significantly low power. Quartz has been utilized as the chiral material which rotates the plane of polarization of a light signal and this polarization rotation is the backbone of the all-optical switching module. The presence or absence of the control signal significantly changes the output of the CMZI switch. This switching module solely gives the all-optical logic XOR operation and with the help of four such parallel XOR gates we can design a CMZI based 4-bit all-optical Galois field adder. The circuit has been analysed by calculating performance indicating parameters such as amplitude modulation (AM~0.008695 dB), extinction ratio (ER~13.27 dB), contrast ratio (CR~16.28 dB), Q-factor (Q~34.48 dB), relative eye opening (REO~ 95.29 %) etc to establish the practical feasibility of the device. These satisfactory values suggest that this device may play a significant role in advancing the next generation optical technologies.