title: Observation of modulational instability induced by velocity-matched cross-phase modulation in a normally dispersive bimodal fiber.
abstract: We demonstrate experimentally the existence of cross-phase-modulation-induced modulational instability in the absence of group-velocity mismatch between the interacting nonlinear dispersive waves. The experiment is performed by means of a normally dispersive isotropic bimodal fiber. The group-velocity mismatch between the fundamental and the first-order modes that constitute the two interacting waves is controlled by wavelength tuning. A strong power dependence of the modulational instability spectra is observed near the condition of group-velocity matching.
authors.affiliation: Laboratoire de Physique, Université de Bourgogne, 9 Avenue A. Savary, B.P. 400, 21011 Dijon, France.
authors.forename: G
authors.initials: G
authors.lastname: Millot
authors.forename: S
authors.initials: S
authors.lastname: Pitois
authors.forename: P T
authors.initials: PT
authors.lastname: Dinda
authors.forename: M
authors.initials: M
authors.lastname: Haelterman