Abstract: Based on the Synchronous Modified Prime Codes（SMPC），a two-dimensional Synchronous Modified Prime Codes（2D-SMPC） is constructed by assigning each different wavelength for each different seed.The correlation performance of 2D-SMPC is analyzed and the choice principle of the address codewords is obtained.Multiple Address Interface（MAI） and the system capacity are studied by Optisystem simulation.Compared with one-dimension SMPC，the performance improvement in Synchronous Optical Code Division Multiple Access（S-OCDMA） system is proven.

Key words: Synchronous Optical Code Division Multiple Access（S-OCDMA）, 2D-synchronous modified prime codes, system capacity, multi-address interface

摘要： 在同步修正素数码（SMPC）基础上，通过给每个不同的种子分配一个不同的波长片，构造了二维正交地址码（2D-SMPC）；分析了码字的相关特性，确定了地址码选取原则；通过Optisystem仿真，研究了该码的多址干扰（MAI）和系统容量等性能。与一维SMPC码性能相比较，验证了其用于S-OCDMA系统时的性能改善。

关键词: 同步码分多址, 二维同步修正素数码, 系统容量, 多址干扰