We show that pulse spectral broadening in normally dispersive nonlinear fiber amplifiers may be enhanced by introducing a suitable dispersion tapering. We obtain an analytical dispersion profile that permits one to reduce pulse propagation in a varying dispersion fiber to the case of an equivalent fiber with constant parameters.
© 2008 Optical Society of America
Original Manuscript: November 2, 2007
Revised Manuscript: January 7, 2008
Manuscript Accepted: January 20, 2008
Published: March 27, 2008
Stefan Wabnitz and Christophe Finot, "Theory of parabolic pulse propagation in nonlinear dispersion-decreasing optical fiber amplifiers," J. Opt. Soc. Am. B 25, 614-621 (2008)