An efficient ultra-short pulse compressor based on a triangular corrugated photonic crystal

In this letter, ultra-fast pulse compression capacity of a triangular corrugated photonic crystal (PhC) was investigated through the finite difference time domain method. The group velocity dispersion of the devised structure was dramatically improved compared to the conventional 1-D PhCs. Calculated dispersion relation of the allowed modes indicates that the geometrical parameters of the proposed photonic architecture can be arranged such that the central wavelength of the incoming pulse lies at the band-edge of the transmission spectrum. The presented design was successfully employed as a pulse dispersion compensator, and the compression factors up to 353 were documented. In addition, the necessity of the optimum condition for the achievement of an effective pulse compression mechanism was discussed.