Linearons: highly non-instantaneous solitons in liquid-core photonic crystal fibers

TL;DR

This paper introduces highly non-instantaneous solitons in liquid-core photonic crystal fibers, arising from slow molecular reorientation nonlinearities, supported by analytical solutions and numerical simulations.

Contribution

It presents the concept of temporally highly-nonlocal solitons in liquid-filled fibers, a novel class of solitary waves due to slow nonlinear response.

Findings

Analytical solutions of a linear Schrödinger equation describe these solitons.

Numerical simulations confirm the physical relevance of the solitons.

Potential applications span various fields due to the unique properties of these structures.

Abstract

The nonlinear propagation of light pulses in liquid-filled photonic crystal fibers is considered. Due to the slow reorientational nonlinearity of some molecular liquids, the nonlinear modes propagating inside such structures can be approximated, for pulse durations much shorter than the molecular relaxation time, by temporally highly-nonlocal solitons, analytical solutions of a linear Schroedinger equation. The physical relevance of these novel solitary structures, which may have a broad range of applications, is discussed and supported by detailed numerical simulations.