title: Analysis of chromatic dispersion properties of triple-clad fibers by coupling-mode theory.
abstract: A model based on coupling-mode theory, for the quantitative analysis of chromatic dispersion characteristics of triple-clad single-mode fibers, is proposed. The strong wavelength dependence of the coupling between a core mode and a ring mode supported by the high-index second cladding of the waveguide structure is shown to be responsible for the dispersion-flattened characteristics of the fiber. Cutoff properties of this type of fiber are also analyzed according to the proposed model.
authors.forename: R
authors.initials: R
authors.lastname: Alonso
authors.forename: J
authors.initials: J
authors.lastname: Pelayo