Confidentiality analysis of optical code-based secure optical communication system

Bo Dai, Yu Huang, Ziao Jiao, Kaimin Wang, Dawei Zhang, Xu Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
70 Downloads (Pure)


A theoretical model is proposed to analyze the time-domain spectral phase en/decoding and evaluate the unconditional security of the optical code-based secure optical communication systems with DPSK modulation. The confidentiality of the systems with and without bit-by-bit code scrambling technique is investigated. It mathematically proves that the system without code scrambling lacks confidentiality and the system employing code scrambling can realize unconditionally secure transmission. Furthermore, encoding only within the central band of the spectrum is sufficient for perfect secrecy, and the secrecy rate can be potentially improved. It allows the system to operate in the burst mode for code generation and encoding and thus have an idle time for rearm.

Original languageEnglish
Article number100502
JournalOptical Engineering
Issue number10
Early online date19 Oct 2018
Publication statusPublished - Oct 2018


  • confidentiality
  • optical encoding
  • secure communication

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


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