IEEE Photonics Technology Letters · 1991 · 35 citations · 7 references
Optical MaterialsEngineeringFiber OpticsFiber LasersHigh-power LasersFiber-optic CommunicationOptical AmplifierOptical AmplificationOptical PropertiesLaser AmplifiersFluorine DopantFiber LaserPhotonicsFiber OpticHigh EfficiencyApplied PhysicsActive FibersErbium-doped Fiber AmplifierOptical Fiber CommunicationOptoelectronicsFibre Amplifier
An erbium-doped fiber amplifier pumped at 1.48 mu m with extremely high efficiency has been developed. The fiber has a relative refractive index difference of 2.0% and Er/sup 3+/ ions and alumina are doped only in a limited area of the core. A slope efficiency of 86% and a gain coefficient of 6.3 dB/mW have been achieved by 1.48 mu m pumping along with excellent spectral signal output performance. In spite of its small mode-field diameter, it is possible to fusion-splice the fiber to standard dispersion-shifted fibers with low loss due to diffusion of fluorine dopant in the classing.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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High-gain, broad spectral bandwidth erbium-doped fibre amplifier pumped near 1.5μm
C.G. Atkins, J.F. Massicott, J.R. Armitage et al. · Electronics Letters · 1989 · 83 citations