The goal of this book is to give a physical insight about the various nonlinear effects associated with the optical fiber, with a particular emphasize on Modulational Instability (MI) and Supercontinuum generation (SCG). The interaction between natural phenomena such as linear dispersion due to the frequency-dependent refractive index and the nonlinearity due to the intensity-dependent refractive index generates interesting features which has aroused a great deal of interest and pave the way for the discovery of "Soliton." MI is a phenomena in which a weak perturbation imposed on a continuous...