Open AccessA Singular Perturbation-Like Approach to EDFA Gain Control Based on Observer Techniques
Author(s) -
Sunghoon Song,
Dong Eui Chang,
Kwang Y. Lee,
Ho-Chan Kim
Publication year - 2015
Publication title -
journal of electrical engineering and technology/journal of electrical engineering and technology
Language(s) - English
Resource type - Journals
eISSN - 2093-7423
pISSN - 1975-0102
DOI - 10.5370/jeet.2015.10.4.1864
Subject(s) - control theory (sociology) , singular perturbation , estimator , perturbation (astronomy) , mathematics , computer science , physics , mathematical analysis , control (management) , artificial intelligence , statistics , quantum mechanics
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.