Abstract

A technique for significantly suppressing severe fourth-order dispersion of ultrashort optical pulses in long-distance transmission is analyzed by use of the quadratic phase from the excess second-order dispersion of the fiber link in conjunction with synchronously applied cosine phase modulation of temporally stretched pulses. Numerical simulation predicts much improved transmission of 250-fs pulses at 5–10-GHz repetition rates over $\sim 100 \mathrm{km}$ of fiber by $\pi –3.5\pi$ phase modulation.

© 2000 Optical Society of America

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