This is just "fiberglass"....Bulk Metallic Glass i.e.
Am I oversimplified the concept?
As OTW pointed out, this indeed can couple ST Micro patent for ultra thin yet rigid Ferrite Shield.
However, I am having hard time dreaming up "use case" for the twin signaling (light and electric current) carrier. Perhaps it can be use in nano-electronics such as mix signal PCB.