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光码分多址(OCDMA)系统中的地址码采用双极性码是一种较好的选择,但需要解决含有负成分的地址码不能在光信道中直接传输的问题。频谱编码(spectralencoding)技术不但能有效解决这一难题,并有助于全光OCDMA的实现。在分析频谱编码的理论基础的前提下,介绍了几种基于双极性码和频谱编码的OCDMA的实现方案,并探讨了系统实现的前景及需要解决的技术问题。
The use of bipolar codes for address codes in Optical Code Division Multiple Access (OCDMA) systems is a good choice, but there is a need to address the issue that address codes containing negative components can not be transmitted directly in optical channels. Spectral spectrum coding (spectralencoding) technology can not only effectively solve this problem, and contribute to the realization of all-optical OCDMA. Based on the analysis of the theoretical basis of spectrum coding, several implementation schemes of OCDMA based on bipolar code and spectrum coding are introduced, and the prospects of system implementation and the technical problems to be solved are discussed.