Abstract
The exact soliton solutions of the nonlinear Schrödinger equation and the extended nonlinear Schrödinger equation with two-photon absorption and bandwidth-limited optical gain, respectively, are given. The results show that both picosecond and femtosecond soliton pulses can be propagated in a single-mode fiber with two-photon absorption and symmetric optical gain with the proper spectral profile.
© 1995 Optical Society of America
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