A novel proposal for all optical amplitude shift keying demodulator using photonic crystal based nonlinear ring resonators

In this paper a new structure was proposed for designing an all optical amplitude shift keying demodulator. The proposed structure was designed using nonlinear ring resonators inside photonic crystal platform. The nonlinear ring resonators were created by adding doped glass rods inside the ring. When the optical intensity of the input signal is 1, 7, 14 and 21 W/mm2 the proposed structure can generate 00, 01, 10 and 11 codes at the output ports. The structure has maximum delay time of 3 ps.