Broadband Bismuth-Doped Fiber Amplifier with a Record 115-nm Bandwidth in the O and E Bands

We report a bismuth-doped fiber amplifier providing >20dB gain from 1345nm–1460nm with 31dB maximum gain and 4.8dB NF at 1420nm for a −23dBm signal. The gain coefficient and temperature-dependent-gain coefficient are 0.042dB/mW and −0.015dB/°C, respectively.

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