wavelengths 1596 and 532 nm, respectively, of a real germania-silica fiber waveguide,
whose preform was made by MCVD technology. For several measured refractive index
profiles of the fiber preform, the corresponding waveguide diameters, providing
homogeneous PM, both with modal dispersion and power characteristics, are calculated.
The PM parameters obtained for the real fiber are compared to that calculated for a standard …