A simple set searching optimization method for Er3+-Yb3+ co-doped fiber lasers

Abstract:

A simple set searching optimization algorithm is proposed for Er³⁺-Yb³⁺ co-doped fiber lasers in this paper. This method enables fiber lasers to acquire the optimum fiber length and Yb³⁺-Er³⁺ concentration ratio for a given accuracy. The numerical results illustrate that the optimum Yb³⁺-Er³⁺ concentration ratio changes very little, the optimum fiber length shortens and the corresponding output power is increased with erbium ions concentration increasing. The total Yb³⁺ and Er³⁺ contents are nearly constant under certain pump power, while the optimum total erbium ions and ytterbium ions are decreased with pump power decreasing.