Design and Optimization of a Double Cladding Octo-wing Segmented Cladding Fibe Using Response Surface Methodology

A double cladding octo-wing segmented cladding fiber (DC-OW-SCF) consists of a resonant layer with the characteristic of large mode area is proposed and optimized. Box-Behnken approach was used to numerically modeled thirteen different design cases by finite element method. To maximize the effective mode area (EMA) as an objective function, response surface methodology was applied. For the optimal DC-OW-SCF, the EMA as large as 706 $\upmu \mathrm{m}^{2}$ at the wavelength of 1.550 $\upmu \mathrm{m}$ was achieved. The optimized SCF can be used for high power fiber lasers and amplifiers.