Abstract
We show, by numerically solving the extended nonlinear Schrödinger
equation, that a notable efficient conversion of energy from the soliton to
the dispersive waves (DWs) can be acquired in photonic crystal fibers with
negative dispersion slopes, and the conversion efficiency can be manipulated
by initial frequency chirp of the input soliton. For the higher order solitons,
the positive chirp can speed up the DWs generation while the negative chirp
will slow it down. For the fundamental solitons, however, both the positive
and negative frequency chirps slow down the DWs generation. Further, we find
that, for both fundamental and higher order solitons, the efficiency of energy
transfer is decreased due to the eigenvalues which represent the ultimate
soliton amplitudes are reduced for both positive and negative chirps, but
this can be easily overcome by simply adding the fiber length.
© 2009 IEEE
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