首页|Role of higher order dispersion on instability criterion of saturable fiber system with Non-Kerr Nonlinearities
Role of higher order dispersion on instability criterion of saturable fiber system with Non-Kerr Nonlinearities
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NSTL
Elsevier
We analyze the modulational instability (MI) of a continuous wave (CW) in saturable fiber systems, including higher-order dispersions, self steepening, and self-frequency shift, cubic, quintic, and septic nonlinearities. We show that whenever the combined effect of higher-order dispersion and non-Kerr nonlinearities with suitable systems meets a wide variety of MI behaviors by mixing different combinations are presented. By modifying the nonlinear Schrodinger equation (NLSE) for MI analysis using Maxwell's theory, the new solution is derived for linear stability analysis to obtain an expression for the MI gain. Among different combinations of higher-order dispersion and non-Kerr nonlinearities, the critical behavior of MI gain suppressed under saturable systems, which leads to affect the nature of soliton stability. Under the activation of self steepening and self-frequency shift in the saturable system, the generated MI behavior regained its original to retain the soliton stability. This kind of new and tuning of MI behavior will be a useful instrument in nonlinear optic communications with straightforward applications.
Modified NLSECubic-quintic-septic nonlinearitySelf-steepening effect and self-frequency shiftSNL etcMODULATIONAL INSTABILITY4TH-ORDER DISPERSIONOPTICAL-FIBERSWAVE-TRAINSPROPAGATIONIMPACTLIGHT
NSTL
Elsevier
