Article

Study on scheme realizing incoherent OCDMA over WDM-PON

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Abstract

An optical access network architecture is researched, with high capacity and large branches, named optical code division multiple access-wavelength division multiplexing-passive optical networks (OCDMA-WDM-PON). The scheme combines the advantages of both WDM and incoherent OCDMA, avoids the limitation of available wavelength channels and optical codes to the capacity, supports more subscribers by providing multiple users with the same code at different wavelength channels. The bit error rate(BER) performance is theoretically analyzed and simulated, including the compare with OCDMA-PON and the effect of code parameters. The simulation results demonstrate that the proposed scheme performs better than OCDMA approach under the same simultaneous users and the performance can be considerably improved with appropriate code parameters.

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