Vector dark domain wall solitons in a fiber ring laser

TL;DR

This paper reports the experimental observation of a new type of vector dark soliton in a fiber ring laser, characterized by stable localized polarization structures and dynamic polarization domain walls.

Contribution

It introduces the first experimental demonstration of vector dark domain wall solitons and polarization domain walls in a fiber ring laser system.

Findings

Observation of stable vector dark solitons separating orthogonal polarization states

Detection of polarization domain splitting and moving polarization domain walls

Demonstration of these phenomena in a fiber ring laser setup

Abstract

We observe a novel type of vector dark soliton in a fiber ring laser. The vector dark soliton consists of stable localized structures separating the two orthogonal linear polarization eigenstates of the laser emission and is visible only when the total laser emission is measured. Moreover, polarization domain splitting and moving polarization domain walls (PDWs) were also experimentally observed.