title: Polarization maintaining single-mode low-loss hollow-core fibres.
abstract: Hollow-core fibre (HCF) is a powerful technology platform offering breakthrough performance improvements in sensing, communications, higher-power pulse delivery and other applications. Free from the usual constraints on what materials can guide light, it promises qualitatively new and ideal operating regimes: precision signals transmitted free of nonlinearities, sensors that guide light directly in the samples they are meant to probe and so on. However, these fibres have not been widely adopted, largely because uncontrolled coupling between transverse and polarization modes overshadows their benefits. To deliver on their promises, HCFs must retain their unique properties while achieving the modal and polarization control that are essential for their most compelling applications. Here we present the first single-moded, polarization-maintaining HCF with large core size needed for loss scaling. Single modedness is achieved using a novel scheme for resonantly coupling out unwanted modes, whereas birefringence is engineered by fabricating an asymmetrical glass web surrounding the core.
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: John M
authors.initials: JM
authors.lastname: Fini
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Jeffrey W
authors.initials: JW
authors.lastname: Nicholson
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Mangan
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Linli
authors.initials: L
authors.lastname: Meng
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Windeler
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Eric M
authors.initials: EM
authors.lastname: Monberg
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Anthony
authors.initials: A
authors.lastname: DeSantolo
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Frank V
authors.initials: FV
authors.lastname: DiMarcello
authors.affiliation: OFS Laboratories, Somerset, New Jersey 08873, USA.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Mukasa