The Optimization of a Segmented Cladding Fiber via the Response Surface Methodology Approach for a Large Mode Area

In this work, we have proposed and optimized a segmented cladding fiber (SCF) with large mode area (LMA) consisting of uniform core double cladding. The outer the SCF consisted periodic alternation high- low-refractive-index segments, while inner resonant layer rods surrounded by high-refractive-index rings. three geometrical parameters chosen as design variables were (a) doped rod refractive index differences, (b) differences rings, (c) ring thickness. Using Box–Behnken approach, selected thirteen different cases modeled them numerically using finite element method (FEM). order to optimize features fiber, such effective (EMA), applied response surface methodology (RSM). EMA optimal was significantly improved markedly enlarged about 706 µm2 at wavelength 1.550 µm. Different properties double-cladding octo-wing (DC-OW-SCF), confinement losses in first higher-order mode, studied. DC-OW-SCF offers advantages feasibility fabrication powder-in-tube (PIT) provides possibility utilization compact amplifier devices high-power lasers.