DCM Dispersion Compensator has the capability of slope compensation which can supply the broad-band dispersion slope compensation for SMF**8 fiber (G.**2) in whole C-band to optimize the system residual dispersion. With the mature and reliable optical fiber processing, the performance of optical transmission system can be sharply improved. The dispersion range of ***0nm wavelength can achieve **0 ~ ****0ps/nm. Special requirements in central wavelength and dispersion can be provided.