J. Phys. Colloques
Volume 49, Numéro C2, Juin 1988Optical Bistability - IV
|Page(s)||C2-301 - C2-304|
J. Phys. Colloques 49 (1988) C2-301-C2-304
MODULATIONAL POLARIZATION INSTABILITY IN BIREFRINGENT FIBERSS. TRILLO1 et S. WABNITZ2
1 Fondazione Ugo Bordoni, Viale Europa 190, I-00144 Roma, Italy
2 Fondazione Ugo Bordoni, Viale Europa 290, I-00144 Roma, Italy
We study the modulational stability of a light beam propagating inside a birefringent optical fiber. The instability conditions and the gain curves for sidebands, with polarization parallel or orthogonal to the carrier, are derived analytically. We present beam propagation simulations showing that the effect of the instability over long pulses in presence of a weak initial modulation, is the generation of trains of ultrashort pulses. This occurs both in the normal and anomalous dispersion regime, and for a pump linearly polarized along either the fast or the slow axis of the fiber.