Propagation of light at 1.5 μm 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.
© 2003 Optical Society of America
J. Canning, E. Buckley, and K. Lyytikainen, "Propagation in air by field superposition of scattered light within a Fresnel fiber," Opt. Lett. 28, 230-232 (2003)