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1.50-µm-band gain-shifted thulium-doped fiber amplifier with 1.05- and 1.56-µm dual-wavelength pumping

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Abstract

We propose and demonstrate a 1.50µmband gain-shifted thulium-doped fiber amplifier (TDFA) by using a novel dual-wavelength 1.05 and 1.56µm pumping scheme for what we believe is the first time. By providing a small amount of 1.56µm power to a conventional upconversion-pumped TDFA, we successfully demonstrated a small-signal gain larger than 25 dB and a noise figure of 5 dB in a 1475–1510-nm band.

© 1999 Optical Society of America

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