To improve the security and optical fiber bandwidth utilization of incoherent Optical Code Division Multiple Access(OCDMA)system,the two-dimensional optical encoder/decoder based on prime code/prime code in p =5 as two-dimensional address code is proposed.Two-dimensional incoherent OCDMA system is analyzed based on OptiSystem platform.The simulation indicates that the two-dimensional incoherent OCDMA system is able to transmit signal successfully.The performance of OCDMA system is deteriorated due to the Mu...