title: Hollow-core photonic bandgap fibers based on a square lattice cladding.
abstract: We propose a novel air-guiding photonic bandgap fiber based on a square lattice cladding. The fiber presents a 20% wider bandgap than is achievable with a conventional triangular-lattice-based cladding and with the choice of a nine-cell core can be effectively single moded at all wavelengths within the bandgap.
authors: Optoelectronics Research Centre, University of Southampton, Southampton, UK. frap@orc.soton.ac.uk
authors: F
authors: F
authors: Poletti
authors: D J
authors: DJ
authors: Richardson