Influence of the pump shape on the modulation instability process induced in a dispersion-oscillating fiber

Abstract

We show that taking into account the temporal intensity profile of a pulsed pump beam may lead to significant deviations from the predictions based on continuous wave analysis of the modulation instability process occurring in a dispersion-oscillating fiber operating under the conditions that lead to gain sideband splitting. Potential application to a pulse doubling scheme with tunable delay is discussed.

Modulation instability in dispersion oscillating fibers

“…[45], we took benefit of this simple expression to adjust DOF parameter either to suppress or enhance a side band in a multi-band MI spectrum. Besides, it has been used in many other work to get a rapid insight of the MI dynamics [50,54,55,[58][59][60].…”

Experimental demonstration of spectral sideband splitting in strongly dispersion oscillating fibers

“…For this purpose, we used the extended NLSE including the third-order and fourth dispersion terms (TOD and FOD, 4.7 × 10 −5 ps 3 ∕m, and 5 × 10 −8 ps 4 ∕m) and the delayed Raman response of silica. Given their potential impact in the process of spectral splitting, we also included linear fiber loss (0.7 dB/km) [13] and the pump pulse shape [17]. Simulation results are summarized in Fig.…”

Nonlinear parametric resonances in quasiperiodic dispersion oscillating fibers

“…[26], and its potential implications for all-optical signal processing were further analyzed in Ref. [32]. Because of the periodicity of the dispersion oscillations, in those cases the Floquet analysis could be successfully applied to reproduce the sideband splitting effect.…”