title: Effects of refractive index changes on four-wave mixing bands in Er-doped photonic crystal fibers pumped at 976 nm.
abstract: An experimental study of the effects of an auxiliary 976 nm pump signal on the four-wave mixing parametric bands generated with a 1064 nm pump in a normal dispersion Er-doped photonic crystal fiber is presented. The four-wave mixing signal and idler bands shift to shorter and longer wavelengths, respectively, with increasing 976 nm pump power. It is shown that the wavelength-dependent resonant refractive index change in the erbium-doped core under 976 nm pumping is at the origin of the effect.
authors.affiliation: Departamento de Física Aplicada-ICMUV, Universidad de Valencia, Valencia, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Velázquez-Ibarra
authors.forename: A
authors.initials: A
authors.lastname: Díez
authors.forename: M V
authors.initials: MV
authors.lastname: Andrés
authors.forename: J L
authors.initials: JL
authors.lastname: Lucio