Pure-quartic domain-wall solitons as topological bits for data transmission

TL;DR

This paper introduces pure-quartic domain-wall solitons in optical media with higher-order dispersion, demonstrating their stability and potential use as topological bits for data transmission in telecommunications.

Contribution

It presents the first solutions for PQ-DW solitons in media with quartic GVD, showing their stability and application potential in optical data transmission.

Findings

PQ-DW solitons are stable modes in quartic GVD media.

They can serve as topological bits for optical data transmission.

The study broadens the scope of optical solitons in nonlinear media.

Abstract

Domain walls (DWs) are topological defects produced by symmetry-breaking phase transitions. Although DWs have been the subject of much work due to their fundamental physical properties, they have not been explored in optical systems with higher-order dispersion. Recent experimental and theoretical works have demonstrated that pure-quartic (PQ) solitons, with their specific energy-width scaling, arise from the interplay of the quartic group-velocity dispersion (GVD) and Kerr nonlinearity. Here, we report solutions for PQ-DW solitons for the model of optical media with the PQ GVD. The analysis demonstrates that they are stable modes. Further investigation reveals their potential as data carriers for optical telecommunications. These results broaden the variety of optical solitons maintained by diverse nonlinear media.