title: Tellurium-enhanced nonresonant third-order optical nonlinearity in a germanosilicate optical fiber.
abstract: A tellurium-doped germanosilicate optical fiber was developed by modified chemical vapor deposition and solution doping techniques. Using the continuous-wave self-phase modulation method, the nonresonant nonlinear refractive index, n2, was measured to be 5.52 x 10(-20) m2/W, which is 2 to 3 times that of the undoped germanosilicate glass fiber. Polyhedron structures TeO3 and TeO4 with GeO4 and SiO4 are believed responsible for lower phonon energy, more nonbridging oxygens, and a larger hyperpolarization, leading to the observed higher nonresonant optical nonlinearity.
authors.affiliation: Center for Optical Technologies and Physics Department, Lehigh University, Bethlehem, Pennsylvania 18015, USA. aoxiang.research@gmail.com
authors.forename: Aoxiang
authors.initials: A
authors.lastname: Lin
authors.forename: Xueming
authors.initials: X
authors.lastname: Liu
authors.forename: Pramod R
authors.initials: PR
authors.lastname: Watekar
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.forename: Bo
authors.initials: B
authors.lastname: Peng
authors.forename: Min
authors.initials: M
authors.lastname: Lu
authors.forename: Wei
authors.initials: W
authors.lastname: Wei
authors.forename: Chuandong
authors.initials: C
authors.lastname: Sun
authors.forename: Yishan
authors.initials: Y
authors.lastname: Wang
authors.forename: Won-Taek
authors.initials: WT
authors.lastname: Han
authors.forename: Jean
authors.initials: J
authors.lastname: Toulouse