Performance study in dispersion compensation techniques with Duobinary format at different bit rates

In this work comparative study is carried for high speed duo binary transmitter with different dispersion compensation schemes for long haul optical communication. These techniques are applied to duo binary system, which operates at bit rates of 10, 15 and 20, 25,30Gbps bit rates. The dispersion compensation schemes tested are Pre-compensation & Post-compensation, symmetrical configuration1&symmetrical configuration 2, optical phase conjugation, FBG compensation, double hybrid fiber& dispersion fiber managed for long haul optical communication. Eye opening is better at 10Gbps bit rate optical transmission with all dispersion compensation techniques tested. It is found that for higher bit rates dispersion managed fiber and next one FBG compensation shows better performance metrics like eye opening bit error rate and factor Q as compared to other dispersion compensation schemes. It is also observed that for low input laser power transmission performance metrics are much better for all dispersion schemes and at higher laser input power transmission performance metrics are degraded.