We have investigated ultrashort parabolic pulse formation via passive nonlinear reshaping in commercially available normal dispersive optical fibers at 1550 nm. It was investigated parabolic pulse formation in the transient-state regime and in the steady-state regime.
The most suitable fiber for pulse reshaping was found. We have shown that femtosecond parabolic pulses can be formed as short as 200 – 300 fs in the transient-state regime and 700–800 fs in the steady-state regime.