6533b82afe1ef96bd128c293
RESEARCH PRODUCT
Influence of the drawing process on the defect generation in multistep-index germanium-doped optical fibers
G. OriglioMarco CannasYoucef OuerdaneSylvain GirardRoberto BoscainoAziz Boukentersubject
060.2310 180.2520 160.2750 160.5335Optical fiberOptical fiberMaterials sciencechemistry.chemical_elementGermanium02 engineering and technology01 natural scienceslaw.invention010309 opticsOpticslaw0103 physical sciencesFibermicroluminescence[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]irradiationbusiness.industryDoping021001 nanoscience & nanotechnologyCrystallographic defectAtomic and Molecular Physics and OpticsCore (optical fiber)chemistryGe doping0210 nano-technologybusinessLuminescenceRefractive indexdescription
International audience; Variation of germanium lone pair center (GLPC) concentration in germanosilicate multistep-index optical fibers and preforms was studied using confocal microscopy luminescence technique. The experimental results provide evidence that in the central core region ([Ge] ~11 wt. % ) of our specific canonical samples the ratio [GLPC]/[Ge] is five times larger in fiber than in preforms. The relative influence of the glass composition and of the drawing process on the generation efficiency of the GLPC defects that drive the glass photosensitivity is discussed. The radial distribution of these defects suggests a possible enhancement of the defect creation related to the internal stress of the fiber core.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-08-01 | Optics Letters |