title: Long wavelength behavior of the fundamental mode in microstructured optical fibers.
abstract: Using a novel computational method, the fundamental mode in index-guided microstructured optical fibers with genuinely infinite cladding is studied. It is shown that this mode has no cut-off, although its area grows rapidly when the wavelength crosses a transition region. The results are compared with those for w-fibers, for which qualitatively similar results are obtained.
authors.forename: S
authors.initials: S
authors.lastname: Wilcox
authors.forename: L
authors.initials: L
authors.lastname: Botten
authors.forename: C
authors.initials: C
authors.lastname: de Sterke
authors.forename: B
authors.initials: B
authors.lastname: Kuhlmey
authors.forename: R
authors.initials: R
authors.lastname: McPhedran
authors.forename: D
authors.initials: D
authors.lastname: Fussell
authors.forename: S
authors.initials: S
authors.lastname: Tomljenovic-Hanic