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All-optical OCDMA code-drop unit for transparent ring networks

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4 Author(s)
Brès, C.-S. ; Electr. Eng. Dept., Princeton Univ., NJ, USA ; Glesk, I. ; Runser, R.J. ; Prucnal, P.R.

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 5 )