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Polarization effects on modulation instability of silicon on insulator waveguides

Abstract. Considering the effects of linear polarization, modulation instability (MI) in silicon on insulator (SOI) waveguides is studied. Impacts of differential group delay, group velocity dispersion, third-order dispersion, and linear loss on gain and frequency of MI, in linearly polarized radiations, are presented theoretically. Fully numerical simulations are performed to verify calculations as well. The results demonstrate strong MI in the normal dispersion regime of SOI waveguides compared to silica fibers with much higher frequencies.