All optical 1 to 2 decoder based on photonic crystal ring resonator

In this paper we combined an optical mixer via photonic crystal ring resonator to propose an all optical 1 to 2 decoder. The main idea used in this paper is based on controlling the optical behavior of the resonant ring via optical power intensity. We know that resonant wavelength of the photonic crystal ring resonator is very sensitive upon the refractive index of dielectric rods, on the other had the refractive index of dielectric materials depend on the optical power intensity. Therefore we can change the resonant wavelength of the resonator by increasing the optical power intensity up to adequate amount. The final structure has two output ports whose working states can be controlled by one input port. When I is OFF, the O1 port will turn ON and O2 is OFF, when I is ON, O1 turns OFF and O2 turns ON. The proposed structure works completely in optical domain without any electronics.