Impact of the order of soliton on fiber optical parametric amplification in ultra-short signal wave

Abstract

The ultra-short pulse optical parametric amplification based on continuous wave pump and pulse signal model is investigated by solving three nonlinear Schrödinger equations numerically. The effect of the order of soliton is presented by comparing the evolution process of signal pulse and the changing of root mean square width of signal. The phenomenon of signal pulse splitting and the broadening of the pulse will appear in the amplification process. Larger order of the soliton makes the pulse split at first, then begin to broaden. Smaller order of the soliton leads to the broadening of pulse firstly, then the pulse begin to split after propagating in a section of fiber.