Abstract:
We describe a multipole formulation that can be used for high-accuracy calculations of the full complex propagation
constant of a microstruetured optical fiber with a finite number of holes. We show how the imaginary
part ofthe microstructure,which describes confinement losses not associated with absorption,varies with hole
size, the number of rings of holes, and wavelength,and give the minimum number of rings of holes required
for a specific loss for given parameters.