Even harmonic pulse train generation by cross-polarization-modulation seeded instability in optical fibers
نویسندگان
چکیده
We show that, by properly adjusting the relative state of polarization of the pump and of a weak modulation, with a frequency such that at least one of its even harmonics falls within the band of modulation instability, one obtains a fully modulated wave at the second or higher even harmonic of the initial modulation. An application of this principle to the generation of a 80-GHz optical pulse train with high extinction ratio from a 40-GHz weakly modulated pump is experimentally demonstrated using a nonzero dispersion shifted fiber in the telecom C band. OCIS codes:.(5530) Pulse propagation and temporal solitons; (4370) Nonlinear optics, fibers; (4380) Nonlinear optics, four wave mixing; (190) Nonlinear optics
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