A composite silica-air fiber with a one hole and one ring core is reviewed in terms of its unique waveguide structure, modal properties and applications in various photonic devices. Adiabatic mode transformation along the hollow optical fiber provides versatile in-line fiber optic applications. In contrast, concatenation of coreless silica fiber and fiber lens provides fiber-optic Fourier transformation for efficient Bessel beam generation.

© 2015 Optical Society of America

PDF Article