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Suppression of WDM interference for error-free detection of ultrashort-pulse CDMA signals in spectrally overlaid hybrid WDM-CDMA operation

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2 Author(s)
Shen, S. ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Weiner, A.M.

We demonstrated the complete suppression of wavelength division multiplexing (WDM) interference for the error-free detection of ultrashort-pulse code division multiple access (CDMA) signals in spectrally overlaid optical WDM-CDMA hybrid operation by the use of narrowband spectral notch filters in the CDMA decoder and a fiber nonlinear thresholder. Our experimental results show the feasibility of CDMA detection in a scheme where WDM channels are overlaid on CDMA channels in the same spectral region.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 1 )