All-optical Integrated Coding System for Optical Analog to Digital (A/D) Converter

摘要

Kerr-like nonlinearity has key role both in monolithic and hybrird optical integrated circuits. For digital optical signal processing, we need all optical monolithic logic gates. For realization of digital optical integrated circuits (DOIC), the optical limiter is one of the important and considerable unit. In this paper, we present a new structure for a 4-bit full optical coding system (Limiter) for all optical analog to digital converter (A/D) using Kerr-like nonlinear two-port ring resonator. By controlling the system parameters such as the coupling, the loss coefficients and the ring length, we propose a suitable optical coding circuit which operates similar to comprator devices. Our proposed idea can be easily realized by integrated optical circuit techniques (OIC).