Theoretical and experimental results are presented that illustrate efficient generation of new optical frequencies by means of induced modulational instability in birefringent fibers for an initially highly phase-mismatched process. Modulational instability is assisted by multiple four-wave mixing interactions. This technique relaxes the strict spectral limitations imposed by the phase-matching conditions on the signal used for frequency conversion by means of modulational instability.
© 2001 Optical Society of America
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.3100) Nonlinear optics : Instabilities and chaos
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
G. Millot, "Multiple four-wave mixing-induced modulational instability in highly birefringent fibers," Opt. Lett. 26, 1391-1393 (2001)