Abstract
All-optical devices have demonstrated a broad range of applications in the communication field. These devices serve as the fundamental building blocks of sophisticated integrated circuits. By integrating these devices into fields such as signal processing, chip design, and network computations, it is possible to achieve a much more efficient device. This paper describes the design of all-optical logic gates such as NAND, NOR, and XNOR using a plasmonic-based Y-shaped power combiner. The combiner employs the concept of linear interference to generate the desired logic gates. The work is simulated and analysed using MATLAB and finite-difference time domain method. The current work is framed within a 60 µm2 area which is less than the size of the existing structures. The parameters characterising insertion loss, transmission efficiency, and extinction ratio are calculated and compared to those of a variety of other designs.
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