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Low noise broadband tellurite-based Er3+-doped fibre amplifiers

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7 Author(s)
Mori, A. ; Opto-Electron. Labs., NTT Corp., Ibaraki ; Kobayashi, K. ; Yamada, M. ; Kanamori, T.
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The authors have succeeded in fabricating low-loss tellurite-based Er3+-doped fibre for low noise 1.5 μm broadband EDFAs by developing high-purity TeO2 as a raw material. The background loss of the fibre is reduced to 0.054 dB/m at 1200 nm. A 20 dB signal bandwidth of 83 nm from 1528 to 1611 nm, and a low flat noise figure of <6.5 dB from 1539 to 1624 nm can be obtained for a tellurite-based EDFA using the low-loss fibre

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Electronics Letters  (Volume:34 ,  Issue: 9 )