Self-similar propagation and amplification of parabolic pulses in optical fibers.
Ultrashort pulse propagation in high gain optical fiber amplifiers with normal dispersion is studied by self-similarity analysis of the nonlinear Schrödinger equation with gain. An exact asymptotic solution is found, corresponding to a linearly chirped parabolic pulse which propagates self-similarly subject to simple scaling rules. The solution has been confirmed by numerical simulations and experiments studying propagation in a Yb-doped fiber amplifier. Additional experiments show that the pulses remain parabolic after propagation through standard single mode fiber with normal dispersion.
Fermann
M E
ME
IMRA America, 1044 Woodridge Avenue, Ann Arbor, Michigan 48105, USA.
Kruglov
V I
VI
Thomsen
B C
BC
Dudley
J M
JM
Harvey
J D
JD