title: Cu(2+)-doped germano-silicate glass fiber with high resonant nonlinearity.
abstract: We firstly report on the fabrication of Cu(2+)-doped germano-silicate glass fiber for nonlinear optical devices application by using modified chemical vapor deposition and solution doping processes. Broadband absorption near 700nm due to the 3d-shell electron transitions of Cu(2+) ions from the ground state to the excited states was observed. The resonant nonlinearity of the Cu(2+)-doped fiber was estimated to be 5.5x10(-17)m(2)/W by measuring the phase shift of the fringes obtained from the long-period fiber grating pair upon pumping with a laser diode at 980nm and non-resonant nonlinearities were also measured to be 4.114x10(-21)m(2)/W by the continuous wave self-phase modulation method.
authors.forename: Aoxiang
authors.initials: A
authors.lastname: Lin
authors.forename: Bok Hyeon
authors.initials: BH
authors.lastname: Kim
authors.forename: Dae Seung
authors.initials: DS
authors.lastname: Moon
authors.forename: Youngjoo
authors.initials: Y
authors.lastname: Chung
authors.forename: Won-Taek
authors.initials: WT
authors.lastname: Han