Abstract
Analytical expressions involving both system parameters and step-size
are proposed to represent the local simulation error for the symmetrized split-step
Fourier (SSSF) simulation method. This analytical expression can be used for
a step-size selection rule to achieve comparable local simulation accuracy
for SSSF simulations. This can lead to computational savings since there is
no waste of computation in each simulation step. Furthermore, based on the
local error expression, scaling rules are derived to achieve comparable global
simulation accuracy for wide ranges of key system parameter values. This
is significant in enhancing the computational efficiency in optical fiber
communication system design and optimization. Extensive validation tests were
performed to explore the application range of the proposed step-size selection
and scaling rules. The desired global accuracy can be achieved with the use
of our local error expression and scaling rules by only a couple of test trial
simulation runs for a variety of practical applications.
© 2008 IEEE
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