Physical Layer Security in High-Speed Optical Communications

Dan Sadot, Ido Attia, Ohad Balasiano, Isaac Jonas, Yarden Yalinevich, Gil Alin, Elimelech Keller, Hamutal Shalom, Eyal Wohlgemuth

Research output: Contribution to journalArticlepeer-review

Abstract

The capability to form a photonic shield by using a unique all-optical transmission scheme incorporating multi-THz coherent spreading, (SPE), and negative (OSNR) completely prevents offline deciphering of captured data-in-transit. This photonic shield scheme provides an ultimate solution to the "harvest-now, decrypt later"threat by eliminating unauthorised recording. Thus, no raw data is available for any post-processing, including by quantum computers. Both the full line rate payload and the asymmetric key exchange, are transmitted through the secured channel. This work presents an industry-level demonstration, including real-time client data transmission and seamlessly continuously changing SPE photonic keys. A 100 Gbps DP-QPSK signal and a 200 Gbps DP-16QAM link are established over 80 km of (SSMF).

Original languageAmerican English
JournalJournal of Lightwave Technology
DOIs
StateAccepted/In press - 1 Jan 2024

Keywords

  • All-optical processing
  • coherent optical communications
  • fiber tapping
  • mode-locked laser
  • optical encryption
  • post-quantum cryptography

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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