Research Article
Analysis of Spatially Doped Fused Silica Fiber Optic by Means of a Hamiltonian Formulation of the Helmholtz Equation
Figure 5
Effective refractive index for a silica rod as a function of the input optical power. The dashed line is the given by the HFHE formulation, whereas the dots represent the results calculated by a full-vectorial iterative approach (FVI) [20].