title: Overlap relation between free-space Laguerre Gaussian modes and step-index fiber modes.
abstract: We investigated the overlap relation of the free-space Laguerre-Gaussian modes to the corresponding linearly polarized modes of a step-index fiber. To maximize the overlap for an efficient coupling of the free-space modes into a fiber, the scale-dependent overlap was theoretically and experimentally determined. The presented studies pave the way for further improvement of free-space to fiber optical connections.
authors.forename: Robert
authors.initials: R
authors.lastname: Brüning
authors.forename: Yingwen
authors.initials: Y
authors.lastname: Zhang
authors.forename: Melanie
authors.initials: M
authors.lastname: McLaren
authors.forename: Michael
authors.initials: M
authors.lastname: Duparré
authors.forename: Andrew
authors.initials: A
authors.lastname: Forbes