A novel chirped fiber Bragg grating(CFBG) comb filter for eight-channel 50 GHz DWDM-channel separations and 60 km dispersion compensation was proposed.The index modulating function and chirp parameter distribution of the CFBG were synthesized by layer-peeling(LP) inverse scattering(IS) technique.According to the coupling coefficient calculated for the synthesized grating,reflection spectrum,group delay and group delay ripper were analyzed based on the method of transformation matrix.The results show that the CFBGs not only satisfy all requirements and could be fabricated with existing techniques.