title: Highly ytterbium-doped silica fibers with low photo-darkening.
abstract: Phosphorus co-doping is known to reduce clustering levels of rare earth ions in silica hosts. In this paper, ytterbium-doped silica fibers with approximately 8.9 wt% Yb(2)O(3), up to approximately 4700 dB/m peak core absorption at 976 nm, and low photo-darkening are demonstrated using high phosphorus co-doping. Measured gain as high as approximately 7 dB/cm is demonstrated in the fiber.
authors.affiliation: IMRA America, Inc, Ann Arbor, Michigan 48105, USA. ssuzuki@imra.com
authors.forename: Shigeru
authors.initials: S
authors.lastname: Suzuki
authors.forename: Hugh A
authors.initials: HA
authors.lastname: McKay
authors.forename: Xiang
authors.initials: X
authors.lastname: Peng
authors.forename: Libin
authors.initials: L
authors.lastname: Fu
authors.forename: Liang
authors.initials: L
authors.lastname: Dong
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055100:Optical Fibers; D017785:Photons; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide; D015018:Ytterbium