For multi-channel dispersion compensation in DWDM systems

this paper first analyzes the sampled fiber grating by using the transfer matrix method and on this basis carries out simulation experiments by regulating the linear chirping coefficients.The simulation results indicate that in the multi-channel dispersion compensation

the reflective spectra of the chirped sampled fiber grating are uniform and all the reflectivities are above 90%;that the delay spectrum is consistent and the minimum delay jitter is smaller than 40ps;and that the dispersion diagram is also uniform and can compensate both the positive and negative dispersion

and in the simulation

the dispersion value does not exceed 500ps/nm.