Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2015.10.4.1864
Title & Authors
A Singular Perturbation-Like Approach to EDFA Gain Control Based on Observer Techniques Song, Seong-Ho; Chang, Dong Eui; Lee, Kwang Y.; Kim, Ho-Chan;
In this paper, we propose a singular perturbation-like approach to EDFA gain controller design and analysis. Considering a three-level model of EDFA, a gain controller containing a state observer and a channel add/drop estimator is designed based on a singular perturbation - like concept. The proposed design methodology is shown to be effective and advantageous not only in theoretically verifying the asymptotic stability of systems with multi-time scales such as EDFA but also in designing an asymptotic estimator for channel add/drops which does not satisfy the matching condition.
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