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Photonic crystal fibers doped with silver nanoparticles exhibit the Kerrnonlinearity that can be positive or negative depending on wavelength andvanishes at a specific wavelength. We study numerically how the simultaneouspresence of a zero-nonlinearity wavelength (ZNW) and a zero-dispersionwavelength affects evolution of soliton and supercontinuum generation insidesuch fibers and find a number of unique features. The existence of negativenonlinearity allows soliton formation even in the normaldispersion region ofthe fiber, and the ZNW acts as a barrier for the Raman-induced red shift ofsolitons.Comment: This paper has been withdrawn by the author due to some major  modification

Implications of a zero-nonlinearity wavelength in photonic crystal fibers doped with silver nanoparticles