Original architecture of an efficient all-optical 2 x 4 photonic crystals decoder based on nonlinear ring resonators

In this paper, we have presented an efficient original architecture of all-optical 2 x 4 photonic crystal decoder based on non-linear ring resonators. The fundamental structure is a square lattice of 2D GaAs rods, operating around the wavelength 1.55 mu m. The proposed decoder is composed of a combiner with three input ports, where the port E is used for excitation and A(1), A(2) are the control ports, and an optical switch with four output ports, and it is a nonlinear DMEX. For the creation of a switch at the wavelength of 1.55 mu m, we used nonlinear chalcogenide glass rods with a nonlinear Kerr coefficient equal to 9 x 10(-17) m(2)/w. The switching intensity and structure size are 1 Kw/mu m(2), 27.12 mu m x 17.96 mu m, respectively. The contrast ratio is about 8.7. The maximum crosstalk and insertion losses are calculated to be about - 22.1 and - 4.5 dB. The maximum and minimum power levels for logic states 0 and 1 are 0.05 x P-0 and 0.37 x P-0 where P-0 is the input power. The finite element method was used to perform the necessary calculations.