Noise figure characteristics of Er 3+ -doped fibre amplifier pumped in 0.8 μm band
- 17 January 1991
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 27 (2) , 146-148
- https://doi.org/10.1049/el:19910095
Abstract
The noise figures of a 100 m long Er3+-doped fibre amplifier pumped in the 800 nm band were investigated. Noise figures of 3.9–4.7 dB were obtained at 1535 nm with input pump wavelengths of 818–824 nm, corresponding to spontaneous emission factors of 1.23–1.48. These values are similar to those obtained using a 1480nm pump scheme. The noise figure at 1552 nm was about 4dB and the spontaneous emission factor was 1.26.Keywords
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