title: Optimizing the usable bandwidth and loss through core design in realistic hollow-core photonic bandgap fibers.
abstract: The operational bandwidth of hollow-core photonic bandgap fibers (PBGFs) is drastically affected by interactions between the fundamental core mode and surface modes guided at the core-cladding interface. By systematically studying realistic hollow-core PBGFs we identify a new design regime robust in eliminating the presence of surface modes. We present new fiber designs with a fundamental core mode free of anticrossings with surface modes at all wavelengths within the bandgap, allowing for a low-loss operational bandwidth of ~17% of the central gap wavelength.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Amezcua-Correa
authors.forename: N G
authors.initials: NG
authors.lastname: Broderick
authors.forename: M N
authors.initials: MN
authors.lastname: Petrovich
authors.forename: F
authors.initials: F
authors.lastname: Poletti
authors.forename: D J
authors.initials: DJ
authors.lastname: Richardson