Yb 3+ sensitised Er 3+ doped silica optical fibre with ultrahigh transfer efficiency and gain
- 10 October 1991
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 27 (21) , 1958-1959
- https://doi.org/10.1049/el:19911214
Abstract
Efficient 1.54 μm emission under 1064 nm excitation of Er3+/Yb3+ codoped silica fibre is reported. The energy transfer efficiency from Yb3+ to Er3+, ∼95%, even under high inversion, is comparable to that in multicomponent glass fibres. The small signal gain of ∼45dB is measured and power amplifiers with 145 mW output power demonstrated.Keywords
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