| Polarization
modulational instability in a birefringent optical fiber with fourth order dispersionR GANAPATHY and V C KURIAKOSE
Department of Physics, Cochin University of Science and Technology, Cochin 682 022, India Email: ganapathyr@cusat.ac.in; vck@cusat.ac.in Abstract. We obtain conditions for the occurrence of polarization modulational instability in the anomalous and normal dispersion regimes for the coupled nonlinear Schrödinger equation modelling fourth order dispersion effects when the linearly polarized pump is oriented at arbitrary angles with respect to the slow and fast axes of the birefringent fiber.Keywords: Birefringent optical fiber; fourth order dispersion; Floquet theory. Pacs Nos. 42.81.Gs; 42.65.Sf; 42.65.Tg |