Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2000 · 28 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsOpticsPhotonicsFiber OpticsFiber PropertiesLaser Host MaterialsLaser OpticsOptical FibersRare-earth-doped MaterialsDoped Fiber MaterialsFiber LasersLasersOptical LossesRaman LasersRare-earth-doped FibersSingle-mode FibersSingle-mode Optical Fibers
A technology has been developed for fabrication of single- mode fibers with a high level of phosphorous doping (10 - 17 mol% P<SUB>2</SUB>O<SUB>5</SUB>) in the core. Characteristics of such fibers intended for use in Raman lasers operating at 1.24 and 1.48 micrometers are investigated. A reduction of fiber drawing temperature and additional doping of the fiber core with fluorine allowed a reduction of optical losses below 1 dB/km in wavelength range 1.1 - 1.5 micrometers .