title: Dispersion of nonlinearity and modulation instability in subwavelength semiconductor waveguides.
abstract: Tight confinement of light in subwavelength waveguides induces substantial dispersion of their nonlinear response. We demonstrate that this dispersion of nonlinearity can lead to the modulational instability in the regime of normal group velocity dispersion through the mechanism independent from higher order dispersions of linear waves. A simple phenomenological model describing this effect is the nonlinear Schrödinger equation with the intensity dependent group velocity dispersion.
authors.affiliation: Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, UK.
authors.forename: A V
authors.initials: AV
authors.lastname: Gorbach
authors.forename: X
authors.initials: X
authors.lastname: Zhao
authors.forename: D V
authors.initials: DV
authors.lastname: Skryabin