Extreme short wavelength operation (1.65 – 1.7 µm) of silica-based thulium-doped fiber amplifier

We report the first demonstration of silica-based thulium-doped fiber amplifier (TDFA) working in the 1.65 - 1.7 μm waveband. Up to 29 dB small signal gain and noise figure as low as 6.5dB are achieved.

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