Feedback chirp compensation for induced phase-modulated pulses in a glass fiber

Summary form only given. Ultrabroad-band optical pulses are necessary to generate extremely ultrashort optical pulses less than 10 fs. Induced-phase modulation (IPM) between more than two color pulses has a large possibility to generate a pulse whose bandwidth is over one-octave. However, the spectral phase behavior of the pulse affected by the IPM is very complicated by the mutual interaction of light fields. Our aim is 1) to compensate for such complicated nonlinear chirp of the pulse and 2) to compensate for chirp automatically by a feedback technique. A single-mode fused-silica fiber with a 2.7 /spl mu/m core diameter was employed as the medium for SPM + IPM effects.