High-performance all-optical 3 × 8 photonic crystal decoder using nonlinear micro-ring resonators.

In this paper, we proposed that a 3 × 8 all-optical decoder operates around 1.55 µm. We combined a 3-input port mixer (A1, A2, and A3) with an excitation port (E) and an 8-output port switch to create the proposed structure. The mixer is a square array of GaAs dielectric rods with a refractive index of 3.37. The switch is a square network of GaAs with a linear refractive index equal to 3.37 and a nonlinear Kerr coefficient equal to 1.6 × 10–17 m2/w. We controlled the switch's optical behavior via the applied optical power intensity. The switch insertion loss values are between − 0.043 and − 0.6 dB, and the maximum cross talk is between − 7.96 and − 14.62 dB. The intensity applied to the combiner input ports is 600 w/m2. In order to activate the decoder, we excited it to a power of 100 w/m2. To perform the necessary simulations, we used the finite-element method implemented in COMSOL Multiphysics software. The proposed structure works completely in the optical domain without any electronics. [ABSTRACT FROM AUTHOR]