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Multiple access interference rejection in OCDMA using a two-photon absorption based semiconductor device

By K.J. Dexter, D.A. Reid, P.J. Maguire, L.P. Barry, Chun Tian, Morten Ibsen, Periklis Petropoulos and David J. Richardson

Abstract

An experimental demonstration of a two-channel OCDMA system with detection performed using standard linear detection or a TPA-based nonlinear detector is presented. These results show an improvement in the extinction ratio of the decoded signal by 5 dB using TPA detection. A simulation model of the TPA detector used during the experiments was created and used in a four-channel OCDMA system simulation using both linear and nonlinear detection methods. The simulation results show that error-free performance is achievable for a 4-user system using the nonlinear TPA detector while the OCDMA system employing linear detection is severely limited by the effects of noise generated by adjacent optical channels (multiple access interference

Topics: TK, QC
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:78879
Provided by: e-Prints Soton
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