TY - JOUR
T1 - Multiple access interference rejection in OCDMA using a two-photon absorption based semiconductor device
AU - Dexter, K. J.
AU - Reid, D. A.
AU - Maguire, P. J.
AU - Barry, L. P.
AU - Tian, Chun
AU - Ibsen, Morten
AU - Petropoulos, Periklis
AU - Richardson, David J.
PY - 2009/4/1
Y1 - 2009/4/1
N2 - 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).
AB - 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).
KW - Multiple access interference (MAI)
KW - Optical code division multiple access (OCDMA)
KW - Optical thresholding and detection
KW - Two-photon absorption (TPA)
UR - http://www.scopus.com/inward/record.url?scp=59749087374&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2008.12.009
DO - 10.1016/j.optcom.2008.12.009
M3 - Article
AN - SCOPUS:59749087374
SN - 0030-4018
VL - 282
SP - 1281
EP - 1286
JO - Optics Communications
JF - Optics Communications
IS - 7
ER -