Noise characteristics of Er/sup 3+/-doped fiber amplifiers pumped by 0.98 and 1.48 mu m laser diodes
- 1 March 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 2 (3), 205-207
- https://doi.org/10.1109/68.50890
Abstract
Measured noise characteristics of Er/sup 3+/-doped optical fiber amplifiers pumped by 0.98- and 1.48- mu m laser diodes (LDs) are reported. The noise figures estimated from the beat noise between signal and spontaneous emission are 3.2 dB for pumping by 0.98- mu m LD and 4.1 dB for pumping by 1.48- mu m LD. The beat noise between spontaneous emission components and the spontaneous shot noise for the 0.98- mu m pumping are lower than those for the 1.48- mu m pumping.Keywords
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