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Gamma-Ray Resistance of Erbium-Doped Fibers for Submarine Applications Examined by Long-run Irradiation Test over Six Months

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Since erbium-doped fiber amplifiers (EDFAs) are being installed in undersea optical communication systems, long-term reliability of EDFA becomes important. Especially, durability of EDFs against γ-ray irradiation is of concern because EDFs which generally contain large amount of germanium(Ge) and aluminum(Al) in the core may be more sensitive to γ-ray-induced damage than standard fibers.

© 1994 Optical Society of America

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