作者
VI Kruglov, AC Peacock, John D Harvey, John M Dudley
发表日期
2002/3/1
期刊
JOSA B
卷号
19
期号
3
页码范围
461-469
出版商
Optica Publishing Group
简介
Pulse propagation in high-gain optical fiber amplifiers with normal group-velocity dispersion has been studied by self-similarity analysis of the nonlinear Schrödinger equation with gain. For an amplifier with a constant distributed gain, an exact asymptotic solution has been found that corresponds to a linearly chirped parabolic pulse that propagates self-similarly in the amplifier, subject to simple scaling rules. The evolution of an arbitrary input pulse to an asymptotic solution is associated with the development of low-amplitude wings on the parabolic pulse whose functional form has also been found by means of self-similarity analysis. These theoretical results have been confirmed with numerical simulations. A series of guidelines for the practical design of fiber amplifiers to operate in the asymptotic parabolic pulse regime has also been developed.
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VI Kruglov, AC Peacock, JD Harvey, JM Dudley - JOSA B, 2002