Optical CDMA code wavelength conversion using PPLN to improve transmission security

Zhenxing Wang, Aref Chowdhury, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We demonstrate optical code-division multiple access (OCDMA) code conversion in the wavelength domain using periodically poled LiNbO3 for enhanced transmission security. The number of possible OCDMA codes in the channel is greatly increased and randomized dynamic code conversion is feasible, thus making it more difficult for an eavesdropper to intercept and decode the code. A 2.5-dB power penalty is reported at a bit-error rate of 10 -9after two back-to-back wavelength conversions.

Original languageEnglish (US)
Pages (from-to)383-385
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number6
StatePublished - Mar 15 2009

All Science Journal Classification (ASJC) codes

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


  • Code conversion
  • Optical code-division multiple access (OCDMA)
  • Periodically poled lithium niobate (PPLN)


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