Effect of Er3+ pairs on the gain and noise figure of EDFAs

Jefferson L. Wagener; Paul F. Wysocki; Michel J. F. Digonnet; H. John Shaw

doi:10.1117/12.168594

15 February 1994 Effect of Er³⁺ pairs on the gain and noise figure of EDFAs

Jefferson L. Wagener, Paul F. Wysocki, Michel J. F. Digonnet, H. John Shaw

Proceedings Volume 2073, Fiber Laser Sources and Amplifiers V; (1994) https://doi.org/10.1117/12.168594
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

Simulations are used to examine the effects of Er³⁺ pairs on the characteristics of erbium-doped fiber amplifiers. As the percentage of pairs is increased, the most significant effect is that the small-signal gain steadily drops. On the other hand, the optimum fiber length (for maximum gain at a given pump power) and the saturation power (at optimum length and constant gain) vary minimally up to pair concentrations of 40%. The noise figure shows degradation with increasing pair concentrations that is due entirely to the reduction in gain, i.e., at constant gain a paired and unpaired amplifiers are predicted to have the same noise figure. The main effect of pairs is therefore to increase the amplifier pump power requirement.

Citation Download Citation

Jefferson L. Wagener, Paul F. Wysocki, Michel J. F. Digonnet, and H. John Shaw "Effect of Er³⁺ pairs on the gain and noise figure of EDFAs", Proc. SPIE 2073, Fiber Laser Sources and Amplifiers V, (15 February 1994); https://doi.org/10.1117/12.168594

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