Propagation in air by field superposition of scattered light within a Fresnel fiber.
Propagation of light at 1.5 microm with peak intensity in an air hole is achieved within an air-silica-structured Fresnel waveguide. Thus a simpler fiber design alternative to photonic crystal fibers is possible for high-peak-power propagation with reduced nonlinear interactions. Multiple foci are observed in the far field.
Canning
J
J
Optical Fibre Technology Centre, University of Sydney, Australian Research Council and Australian Photonics Cooperative Research Centre, Eveleigh, Sydney, NSW, Australia. j.canning@oftc.usyd.edu.au
Buckley
E
E
Lyytikainen
K
K