Abstract
We study analytically and numerically the modulation instability (MI) of two incoherently co-propagating optical pulses in nonlinear fiber, taking into account high-order nonlinearity, walk-off effects, delay response time, and cross-phase modulation in several dispersion regimes. We show that higher-order nonlinearity is responsible for superposition of the secondary MI spectrum. We realize that there is a peak located in the emerged Raman band that we call “Raman peak” due to the combined effects of third-order dispersion, delay response time, and the opposite sign of the fourth-order dispersion parameter. These peaks are shifted toward higher frequencies when the walk-off increases.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
K. Porsezian, K. Nithyanandan, R. Vasantha Jayakantha Raja, and P. K. Shukla
J. Opt. Soc. Am. B 29(10) 2803-2813 (2012)
A. A. Canabarro, B. Santos, Iram Gleria, M. L. Lyra, and A. S. B. Sombra
J. Opt. Soc. Am. B 27(9) 1878-1885 (2010)
Karabo Kefilwe Ndebele, Conrad Bertrand Tabi, and Timoléon Crépin Kofané
J. Opt. Soc. Am. B 37(11) A214-A227 (2020)