Extreme optical nonlinearities in chalcogenide glass fibers embedded with metallic and semiconductor nanowires

摘要

A nanostructured chalcogenide-metal optical fiber is proposed. This hybrid nanofiber is embedded with a periodic array of triangular-shaped deep-subwavelength metallic (or semiconductor) nanowires set up in a bowtie configuration. Calculations show that the proposed nanostructured fiber supports a guided collective plasmonic mode enabling both subwavelength field confinement and extreme nonlinear light-matter interactions. A scheme is also proposed whereby the large linear absorption losses are compensated via nonlinear optical gain when semiconducting single-wall carbon nanotubes are used in place of metal.