Securing Data in Multimode Fibers by Exploiting Mode-Dependent Light Propagation Effects.

ABSTRACT: Multimode fibers hold great promise to advance data rates in optical communications but come with the challenge to compensate for modal crosstalk and mode-dependent losses, resulting in strong distortions. The holographic measurement of the transmission matrix enables not only correcting distortions but also harnessing these effects for creating a confidential data connection between legitimate communication parties, Alice and Bob. The feasibility of this physical-layer-security-based approach is demonstrated experimentally for the first time on a multimode fiber link to which the eavesdropper Eve is physically coupled. Once the proper structured light field is launched at Alice's side, the message can be delivered to Bob, and, simultaneously, the decipherment for an illegitimate wiretappe

SUBMITTER: Rothe S 

PROVIDER: S-EPMC10013962 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature