Modulated coupled nanowires for ultrashort pulses

TL;DR

This paper demonstrates how periodic waveguide bending in nanowire arrays can be used to control dispersion and diffraction independently, enabling ultrashort pulse reshaping without pulse break-up.

Contribution

It introduces a novel method to tailor inter-mode dispersion in nanowire waveguides through periodic bending, combining analytical predictions with numerical validation.

Findings

Dispersion and diffraction can be independently controlled in nanowire arrays.

Periodic bending enables ultrashort pulse reshaping without break-up.

The approach offers flexible spatio-temporal pulse manipulation.

Abstract

We predict analytically and confirm with numerical simulations that inter-mode dispersion in nanowire waveguide arrays can be tailored through periodic waveguide bending, facilitating flexible spatio-temporal reshaping without break-up of femtosecond pulses. This approach allows simulta- neous and independent control of temporal dispersion and spatial diffraction that are often strongly connected in nanophotonic structures.