title: Bend loss in all-solid bandgap fibres.
abstract: Experimental measurements of all-solid photonic bandgap fibres with an array of high-index rods in a low-index background revealed an unexpected variation of bend loss across different bandgaps. This behaviour was confirmed by calculations of photonic band structure, and explained with reference to the differing field distributions of the modes of the cladding rods. Our understanding was confirmed by further experiments, leading to proposals for the improvement of these fibres.
authors.forename: T A
authors.initials: TA
authors.lastname: Birks
authors.forename: F
authors.initials: F
authors.lastname: Luan
authors.forename: G J
authors.initials: GJ
authors.lastname: Pearce
authors.forename: A
authors.initials: A
authors.lastname: Wang
authors.forename: J C
authors.initials: JC
authors.lastname: Knight
authors.forename: D M
authors.initials: DM
authors.lastname: Bird