40Gb/s Secure Optical Communication Based on Symbol-by-Symbol Optical Phase Encryption

Zhensen Gao, Yuehua An, Anbang Wang, Pu Li, Yuwen Qin, Yuncai Wang*, Xu Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Achieving high speed physical layer security is a constant pursuit but critical challenge for the information society. In this paper, a novel symbol-by-symbol optical phase encryption technique relying on ultra-long, reconfigurable optical phase patterns and commercial off-the-shelf dispersive components is proposed for high speed physical layer security. A record 40Gb/s secure optical communication system with symbol overlapped, optical phase encrypted differential-phase-shift-keying modulated signal is experimentally demonstrated based on the proposed technique. Security robustness against various eavesdropper's attacks has been validated for three optical codes with a chip rate of 40Gchip/s and variable code-length of 128-chip, 512-chip and 1024-chip, respectively. The demonstrated technique exhibits the advantages of supporting high bit rate operation and advanced optical modulation formats, improving code flexibility and cardinality, which makes it very promising for future ultra-fast secure optical communication.

Original languageEnglish
Pages (from-to)851-854
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number14
Early online date5 Jun 2020
Publication statusPublished - 15 Jul 2020


  • communication system security
  • optical encryption
  • optical signal processing
  • Secure optical communication

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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