Laboratoire Interdisciplinaire Carnot de Bourgogne, Unité Mixte de Recherche 6303 Centre National de la Recherche Scientifique-Université de Bourgogne, Dijon, France. jfatome@u‑bourgogne.fr
Opt Lett. 2013 Jan 15;38(2):181-3. doi: 10.1364/OL.38.000181.
We demonstrate experimentally that multiple four-wave mixing (FWM) pumped by a dual-frequency input in a single-mode fiber is modulationally unstable. This collective type of instability leads, in the anomalous dispersion regime, to sideband growth around all orders of FWM. This is in contrast with the normal dispersion regime where our measurements show that FWM exhibits no instability. Our conclusions are based on the first systematic mapping of the phenomenon as a function of the dual-pump input frequency separation.
我们通过实验证明，在单模光纤中，由双频输入泵浦的多次四波混频（FWM）是调制不稳定的。在反常色散区，这种集体型不稳定性会导致 FWM 的所有阶次周围的边带增长。这与正常色散区形成对比，在正常色散区，我们的测量表明 FWM 没有不稳定性。我们的结论是基于对该现象作为双泵输入频率间隔函数的首次系统映射。
