Wabnitz, StefanAkhmediev, Nail2015-12-070030-4018http://hdl.handle.net/1885/23554We show that inducing modulation instability with a weak modulation whose frequency is such that its second harmonic falls within the band of instability may lead to asynchronous Fermi-Pasta-Ulam recurrence and efficient transfer of power from the pump into the second harmonic of the modulation, resulting in a periodic modulation at the second harmonic with extinction ratios in excess of 30 dB.Keywords: Extinction ratios; Induced modulation instability; Modulation frequencies; Modulation instabilities; Periodic modulation; Second harmonics; Harmonic analysis; Modulation201010.1016/j.optcom.2009.11.0302016-02-24