Experiments that produced 100-fsec pulses by a single-pass Raman amplification process did not lead to the expected self-frequency shift induced by intrapulse Raman scattering. We show that under conditions in which a Stokes pulse continues to receive frequency-dependent gain from a pump, a balance can be achieved between the two competing processes. Hence the progressive self-frequency shift of a soliton along a fiber can be suppressed.
© 1988 Optical Society of America
K. J. Blow, N. J. Doran, and David Wood, "Suppression of the soliton self-frequency shift by bandwidth-limited amplification," J. Opt. Soc. Am. B 5, 1301-1304 (1988)