Gain-shifted thulium-doped fibre amplifiers employing novel high concentration doping technique
- 1 January 2000
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 36 (5), 418-419
- https://doi.org/10.1049/el:20000332
Abstract
A novel high thulium concentration doping technique is proposed for shifting the gain band in thulium-doped fibre amplifiers (TDFAs). The gain peak shifts from 1473 to 1505 nm when the Tm3+ concentration is increased from 2000 to 8000 ppm. The authors have achieved gains of > 18 dB and a noise figure (NF) of < 7 dB from 1480 to 1510 nm (30 nm bandwidth) for a total pump power of 500 mW.Keywords
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