title: Fiber propagation of vector modes.
abstract: Here we employ both dynamic and geometric phase control of light to produce radially modulated vector-vortex modes, the natural modes of optical fibers. We then measure these modes using a vector modal decomposition set-up as well as a tomography measurement, the latter providing a degree of the non-separability of the vector states, akin to an entanglement measure for quantum states. We demonstrate the versatility of the approach by creating the natural modes of a step-index fiber, which are known to exhibit strong mode coupling, and measure the modal cross-talk and non-separability decay during propagation. Our approach will be useful in mode division multiplexing schemes for transport of classical and quantum states.
authors.forename: Bienvenu
authors.initials: B
authors.lastname: Ndagano
authors.forename: Robert
authors.initials: R
authors.lastname: Brüning
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