Development and Analysis of All-Optical Multipurpose OR, XOR, NAND, AND, NOR, and XNOR Logic Gates in a Single Unit Using Silicon Microring Resonator

There is a rising demand for low-cost, high-information-capacity optical signal processing. The number of devices is limited of performing different Boolean functions using a single unit. In the current manuscript, six basic logic gates, including OR, XOR, NAND, AND, NOR, and XNOR, are implemented in a single unit utilizing all-optical silicon microring resonator. At first, three microring resonators are used to get the AND, XOR and NOR logic functions. Then, beam combiners are used to get the OR, NAND and XNOR functions from AND, XOR, and NOR functions. In MATLAB, the suggested design is numerically simulated to verify the functions at an operational speed of nearly 260 Gbps. The required pump power for switching is only 1.95 mW for microring resonator based switch which is very less comparatively. Also, some performance parameters like “extinction ratio”, “contrast ratio”, “amplitude modulation”, “on–off ratio”, and “quality factor” are evaluated. To design the circuit practically, optimized parameters of the circuits have been selected. The obtained values of “extinction ratio” and “contrast ratio” are 14.97 dB and 19.03 dB, respectively. The value of AM is 0.17 dB which is less than 1 dB. The on–off ratio of the MRR is 35.10 dB which is much higher than expected.