Abstract
The rapid development in optical fiber amplifiers continues to have major impact on telecommunications and ultrafast optics, and opens up new possibilities for fundamental studies of nonlinear and dispersive pulse propagation in the presence of gain. In particular, numerical simulations of the nonlinear Schodinger equation (NLSE) have suggested that ultrashort pulses propagating in an amplifier in the presence of normal dispersion evolve into a parabolic shape with a linear chirp [1].
© 2000 IEEE
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