Limitation of RDS theory and resolution in broadband dispersion compensation

The fact that the broadband dispersion compensation is analyzed by using the relative dispersion slope (RDS) theory is a certain limitation. A method to extend the dispersion function to a Taylor series or multinomial has been proposed, i.e., combining the Taylor series or multinomial in transmission wavelength and supposing every term coefficient of multinomial being equal to zero, so the dispersion, dispersion slope and dispersion curvature can be compensated. This method of adopting the dispersion function series expansion can be used in high precision broadband dispersion compensation. The linear and nonlinear dispersion compensations are discussed, and the simulation results are given.