This article first introduces the fundamental principles of dispersion compensation.Then it explains the latest dispersion compensation technologies at home and abroad
including the Dispersion Compensation Fiber(DCF) that is technologically matured and commercially applied in large scales and Fiber Bragg Grating(FBG) that is constantly technologically maturing
and describes the hotspots in the future dispersion compensation researches: Photonic Crystal Fiber(PCF) dispersion compensation and electronic dispersion compensation.Finally
it points out the orientation of the development of dispersion compensation.