Abstract

An efficient erbium-doped fiber amplifier providing gains from +25 to +37 dB with pump powers at λ = 1.49 μm in the 11–54-mW range is described. Corresponding saturation output powers of +2.5 to +11 dBm were achieved. A maximum gain coefficient of 2.1 ± 0.1 dB/mW was measured, which is to our knowledge the highest value reported for erbium-doped fiber amplifiers pumped near λ = 1.49 μm and matches previously reported results for a λ = 980-nm pump.

© 1989 Optical Society of America

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