Abstract
The modulation instability (MI) of a continuous wave background has been widely investigated in various fields of physics. In nonlinear fiber optics, the longitudinal and periodic modulation of the fiber dispersion may lead to a quasi-phase-matching (QPM)-induced MI process with the emergence of well-separated, and unequally spaced gain sidebands, symmetrically placed around the pump [1,2]. In this context, one may wonder how deviations from a strictly periodic evolution of the fiber parameters may affect the QPM-MI spectrum.
© 2015 IEEE
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