介绍了光纤码分多址通信的基本原理及系统结构，并对该系统中的一些地址码进行了技术分析。多用户接入干扰是光纤码分多址系统中的一种主要噪声源，对减小多用户接入干扰的有关研究进行了论述，给出了两种典型的减小多用户接入干扰的接收机结构。最后指出了光纤码分多址系统趋于实用化需要解决的关键技术问题。关 键 词 光码分多址; 多用户接入干扰; 光正交码; 多维码Abstract The progress, fundamental principles and system structures of fiber optical code-division multiple-access(OCDMA) are introduced. Spreading sequences used in fibe OCDMA are investigated, also we summarize the schemes used to reduce multiple access interference, and several new receiver structures are given. Finally, some main techniques are proposed.Key words fiber-OCDMA; MAI; optical orthogonal code; multi-dimension code