A new family of 2D-wavelength-time codes for OCDMA system with direct detection

A new family of two dimensional wavelength-time codes is proposed in this paper. Based on one-dimensional ZCC, it allows a higher cardinality without increasing the code length, while conserving the same correlation properties. Thus, the direct detection at the receiver can be used, thereby simplifying the architecture of wavelength-time OCDMA scheme. The performance of the system was evaluated by referring to the Q factor, the BER and the eye pattern diagrams.