Chaotic data encryption using semiconductor lasers

Paul Rees, S. Sivaprakasam, Paul S. Spencer, J. Paul, Lestyn Pierce, K. Alan Shore

Research output: Contribution to journalConference articlepeer-review


Synchronized external-cavity diode lasers are used for chaotic optical communication. A 1 GHz message is encoded by current modulation of the chaotic transmitter laser and decoded by a synchronized chaotic receiver laser diode. The effect of introducing the message by optical injection into the receiver laser instead of direct current modulation is then investigated. Finally we show how the signal masking can be enhanced by the appropriate choice of external cavity length for a given message frequency.

Original languageEnglish (US)
Pages (from-to)160-168
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Sep 29 2003
EventNovel In-Plane Semiconductor Lasers II - San Jose, CA, United States
Duration: Jan 27 2003Jan 29 2003


  • Communication security
  • Semiconductor lasers
  • Synchronization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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