Brillouin-enhanced four-wave mixing with optical chiral states

authored by: Xinglin Zeng, Birgit Stiller
Abstract: Brillouin-enhanced four-wave mixing (BE-FWM)—also known as Brillouin dynamic gratings—is an important nonlinear effect in photonics that couples four light waves by traveling acoustic waves. The effect has received much attention in the past few decades, especially for applications in fiber sensing, signal processing, and optical delay lines. Here, we report BE-FWM with optical chiral states (i.e., circular polarization and vortex states) in twisted photonic crystal fiber, by leveraging the topology-selective Brillouin effect. Phase-matching has the consequence that the traveling acoustic gratings created by circularly polarized vortex pump and Stokes in the stimulated Brillouin scattering can be used to modulate a frequency-shifted probe, where the pump/Stokes and probe have different circular polarization or topological charges. Based on our findings, we demonstrate cross-frequency selective information transfer and show that the information is transferred only when pump and probe have opposite circular polarization.
Organisation(s): Institute of Photonics
External Organisation(s): Max Planck Institute for the Science of Light
Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU Erlangen-Nürnberg)
Type: Article
Journal: APL Photonics
Volume: 10
ISSN: 2378-0967
Publication date: 25.07.2025
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics, Computer Networks and Communications
Electronic version(s): https://doi.org/10.1063/5.0265616 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{d5ee5430e4b247b1be942117704ce770,
title = "Brillouin-enhanced four-wave mixing with optical chiral states",
abstract = "Brillouin-enhanced four-wave mixing (BE-FWM)—also known as Brillouin dynamic gratings—is an important nonlinear effect in photonics that couples four light waves by traveling acoustic waves. The effect has received much attention in the past few decades, especially for applications in fiber sensing, signal processing, and optical delay lines. Here, we report BE-FWM with optical chiral states (i.e., circular polarization and vortex states) in twisted photonic crystal fiber, by leveraging the topology-selective Brillouin effect. Phase-matching has the consequence that the traveling acoustic gratings created by circularly polarized vortex pump and Stokes in the stimulated Brillouin scattering can be used to modulate a frequency-shifted probe, where the pump/Stokes and probe have different circular polarization or topological charges. Based on our findings, we demonstrate cross-frequency selective information transfer and show that the information is transferred only when pump and probe have opposite circular polarization.",
author = "Xinglin Zeng and Birgit Stiller",
note = "Publisher Copyright: {\textcopyright} 2025 Author(s).",
year = "2025",
month = jul,
day = "25",
doi = "10.1063/5.0265616",
language = "English",
volume = "10",
journal = "APL Photonics",
issn = "2378-0967",
publisher = "AIP Publishing LLC",
number = "7",
}

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