High-gain hybrid amplifier consisting of cascaded fluoride-based TDFA and silica-based EDFA in 1458-1540 nm wavelength region |
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| Authors: | Sakamoto T. Aozasa S. Yamada M. Shimizu M. |
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| Affiliation: | NTT Photonics Labs., NTT Corp., Atsugi, Japan; |
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| Abstract: | A hybrid optical fibre amplifier is described that consists of a fluoride-based thulium-doped fibre amplifier and a silica-based erbium-doped fibre amplifier connected in a cascade. The amplifier has a gain of more than 25 dB and a noise figure of less than 9 dB over a wide wavelength region of 1458-1540 nm. |
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