SOLITON PROPAGATION IN A SYSTEM WITH NONLINEAR GAIN

Soliton propagation in the presence of spectral filtering, linear, and nonlinear gain is explored. We fix the filtering, and study steady-st ate soliton parameters for various relations between linear and nonlin ear gain. We reveal, that as the linear gain vanishes, the soliton amp litude diverges. Soliton propagation in a system with spectral filteri ng and purely nonlinear gain is also studied.