All optical code drop unit for transparent ring networks

I. Glesk, Camille-Sophie Brès, Robert J. Runser, Paul R. Prucnal

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


In this letter, we propose and experimentally demonstrate a novel all-optical two-dimensional time-wavelength optical code-division multiple access (OCDMA) code-drop unit for transparent ring networks. The ultrafast all-optical code-drop unit is based on the terahertz optical asymmetric demultiplexer.We have demonstrated experimentally the capability to drop the correlated code at the desired node in a four-user ring network operating at 253 Gchips/s with a single-user bit rate of 2.5 Gb/s. Error-free operation is obtained. Dropping codes from multihop networks
facilitates the development of optical add–drop multiplexers for OCDMA networks
Original languageEnglish
Pages (from-to)1088-1090
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number5
Publication statusPublished - May 2005


  • code-division multiple access
  • optical fiber communications
  • optical fiber local area network


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