title: Discrete modulational instability in periodically poled lithium niobate waveguide arrays.
abstract: Parametric gain associated with discrete modulational instability due to the second order nonlinearity chi(2)(-2omega;omega,omega) was investigated experimentally in periodically poled lithium niobate arrays of weakly coupled channel waveguides for conditions of both positive and negative phase-mismatch for second harmonic generation.
authors.forename: Robert
authors.initials: R
authors.lastname: Iwanow
authors.forename: George
authors.initials: G
authors.lastname: Stegeman
authors.forename: Roland
authors.initials: R
authors.lastname: Schiek
authors.forename: Yoohong
authors.initials: Y
authors.lastname: Min
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Sohler