All optical analog to digital convertor using nonlinear photonic crystal ring resonators

摘要

In this paper an all optical analog to digital convertor was proposed based on photonic crystals. Four nonlinear ring resonators were used for designing a nonlinear demultiplexer, which can produce discrete levels of optical intensities from the input analog signal. Then by creating suitable connections between the output channels and waveguides of the demultiplexer, the coding section was created and the final structure was realized. For the proposed structure the maximum delay time is about 4 ps.