Nanoplasmonics in hybrid fibers


Nanoplasmonics in hybrid fibers

Level 6 Geoff Opat Seminar Room
David Caro Building


Recent rapid progress in nanophotonics has been driven by the ability to integrate photonic devices with nanostructures of ever-increasing sophistication and incorporate a variety of materials on the nanoscale. In parallel, optical fibers have played a key role in the technological boom of the past decades, but their functionality has remained limited. Most recently, hybrid optical fibers have provided apathway to achieve high-performing fibers, through the integration of large-aspect-ratio nanowires of different materials within them, such as metals, semiconductors, nonlinear glasses, or even liquids. A variety of pre- and post- processing techniques can be employed, including modified vapour deposition, direct fiber drawing, and pressure-assisted melt filling, providing specifically tailored functionality beyond that of simple glass fibres. Applications span numerous fields, including plasmonics, metamaterials, near-field and on linear optics, and biosensing. In this talk I will review some of the recent experimental progress in hybrid fibers, with a specific focus on plasmonic step-index fibers which possess gold nanowires in the core or cladding. These form a simple and monolithic fiber platform, which can either be used as an efficient near-field probe, a single-mode nonlinear plasmonic waveguide, or a plug-and-play broadband polarizer. In the final part of my talk I will discuss some recent progress in the design of ultra-compact hybrid-plasmonic nonlinear waveguides at the Australian Institute for Nanoscale Science and Technology (AINST).


  • Dr Alessandro Tuniz
    Dr Alessandro Tuniz, University of Sydney