Improved design of all-optical half-adder and half-subtractor circuits using MIM plasmonic waveguides for optical networks

All-optical half-adder and half-subtractor circuits are implemented through using metal-insulator-metal (MIM) waveguide utilizing a footprint of 66 mu m(2). The linear interference principle is used in this design at 66 mu m operating wavelength, the suggested device focuses on transverse electric (TE) polarization of optical communication. Both the half-adder and half-subtractor has the identical structure which is flexible in nature. The structure consists of two Y-shaped power combiners giving optimized operation and comparison of different performance parameters such as extinction ratio, transmission efficiency and insertion loss. The device is designed mainly for ultrafast surface-plasmon polariton switching applications. The finite-difference time-domain (FDTD) technique is used to examine this design. MATLAB simulation and mathematical computation results are used to further verify the computation.

Automated summary

All-optical half-adder and half-subtractor circuits are implemented using metal-insulator-metal (MIM) waveguide with a footprint of only 66 μm². The design is based on the linear interference principle at an operating wavelength of 66 μm, focusing on the transverse electric (TE) polarization in optical communication. The structures of both the half-adder and half-subtractor are flexible and consist of two Y-shaped power combiners, optimizing performance parameters such as extinction ratio, transmission efficiency, and insertion loss. This device is designed for ultrafast surface-plasmon polariton switching applications and is examined using the finite-difference time-domain (FDTD) technique, further validated through MATLAB simulation and mathematical computation results.