The criteria for performance improvement for a WDM network of passive star topology that occupies a separate control wavelength is studied in this paper. Especially, a WDMA algorithm is adopted that provides additional transmission capabilities over the data channels, aiming to improve the performance. The analytical model provided is based on Poisson statistics and derives the mathematical formulas of average throughput and transmission cancelation probability to avoid the data channels collisions. Extensive numerical results study is given for diverse numbers of data channels and different values of control phase duration.