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All-optical NOT and AND gates using nonlinear photonic crystal octagonal shape ring resonator

Gupta Priyanka Kumari, Paltani Punya Prasanna, Tripathi Shrivishal

Optica Applicata

2024

Vol. 54, nr 4

471--482

This paper proposes novel all-optical logic NOT and AND gates using an octagonal-shaped ring resonator with Kerr nonlinearity created on the platform of a two-dimensional photonic crystal (2DPC). The ring resonator offers maximum transmission efficiency and is simpler than the previously published designs. In our design, the nonlinearity is applied only to the outer rods of the core (rather than the whole core section) of the ring resonator, increasing their size. The proposed gates exhibit low operating and switching powers compared to the earlier proposals, which is highly desired for practically integrating any all-optical device.