Abstract
Optical fibers with index profiles that are optimized for broadband double
pumped parametric amplifiers are thoroughly investigated. The analysis
includes random variations in the radii of the profile along the fiber
length (introduced in the fabrication process). By optimizing the fourth
order dispersion parameter and the effective area we obtain fiber designs
that provide flat spectral gain over 200 nm with 3.5 W pump lasers and, at
the same time, have robust operation wavelength against fluctuations of up
to 1% in the radii of the index profile. These fibers show positive and very
small forth order dispersion. Our results indicate that in such low
dispersion fibers, the sixth order dispersion parameter must be considered
in the optimization algorithm.
© 2009 IEEE
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