Breakthrough in optical information transmission: A one-way street for optical vortices

https://phys.org/news/2022-10-breakthrough-optical-transmission-one-way-street.html

"sound waves propagate one direction break light transmission reciprocity... topology-selective Brillouin-Mandelstam scattering in chiral photonic crystal fiber allows for a unidirectional interaction of vortex-carrying light waves with traveling sound waves... optical vortex can be strongly suppressed or amplified with a well-designed control light... significant vortex isolation rate, preventing random backscattering and signal degradation in the system... first nonreciprocal vortex modes...happen on higher-order modes"

Related: Picking up the statistics of good vibrations in Brillouin-Mandelstam scattering

https://phys.org/news/2023-11-statistics-good-vibrations-brillouin-mandelstam.html