Design and analysis of minimal area all-optical 2D photonic crystal-based AND gate

The design and performance analysis of an all-optical AND logic gate that takes use of the light beam interference phenomenon has been presented in this paper. Displayed is a new arrangement of aligned air holes carefully bored into a silicon substrate to create a two-dimensional photonic crystal (2D-PC) structure. The finite-difference time-domain (FDTD) approach has been utilized to conduct a thorough analysis of the suggested gate. The gate’s accuracy in satisfying its truth tables at an estimated wavelength of 1550 nm, which is essential for C-band fiber-optic communication systems, is demonstrated by the results. With a relatively high contrast ratio (CR) of 8.15, the device’s construction has a unique 60-degree bend geometry, resulting in a minimum device area of 40.8 micro-meter squared.