Characteristics of pulse distorted by linearly chirped fiber gratings

Numerical analysis of the pulse distortion in dispersion compensation system with linearly chirped fiber gratings (LCFGs) is presented in this paper. The characteristics of distorted pulse including pulse shape, pulse width as well as frequency chirp are given in detail. We find that the subpulses reflected by LCFG are imposed on different frequency chirp which induces their different broadening behaviors.