Fibercore AstroGain fiber: multichannel erbium doped fibers for optical space communications
2014
Fibercore have developed AstroGain TM fiber optimized for multichannel amplifiers used in optical satellite
communications and control. The fiber has been designed to take full advantage of the photo-annealing effect that results
from pumping in the 980nm region. The proprietary trivalent structure of the core matrix allows optimum recovery
following radiation damage to the fiber, whilst also providing a market leading Erbium Doped Fiber Amplifier (EDFA)
efficiency. Direct measurements have been taken of amplifier efficiency in a multichannel assembly, which show an
effective photo-annealing recovery of up to 100% of the radiation induced attenuation through excitation of point
defects.
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