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Proceedings Paper

Analysis of EDFA employing distributed absorption filter
Author(s): Jan Lamperski
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Paper Abstract

The results of numerical simulations of an original narrow band erbium doped distributed absorption filter fiber amplifier (DAF-EDFA) were demonstrated. Numerical simulations were carried out for both: a standard, single stage, forward pumped reference EDFA without gain equalization and an amplifier containing a distributed absorption filter (DAF). Results of the examination of the EDFA containing a distributed absorption filter were presented. The population inversion for different input signal powers, forward and bacward ASE evolution along the fiber, and the gain and pump efficiency characteristics were compared for the examined DAF-EDFA and reference EDFA amplifiers. The reported approach allows significant reduction of ASE propagation in both directions. As a result, the elimination of the effect of inversion depletion at input EDF section was observed. It was shown that in the proposed approach a significant improvement of gain characteristics and power conversion efficiency can be obtained.

Paper Details

Date Published: 24 September 2005
PDF: 6 pages
Proc. SPIE 5952, Optical Fibers: Applications, 59521O (24 September 2005); doi: 10.1117/12.623176
Show Author Affiliations
Jan Lamperski, Poznan Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5952:
Optical Fibers: Applications
Leszek R. Jaroszewicz; Brian Culshaw; Anna Grazia Mignani, Editor(s)

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