【摘要】 研究了一种时频域二维编码的OCDMA系统,采用码位重叠扩时跳频码、Bragg光纤光栅时频域二维编解码器及ASE宽谱编码光源的优化方案,实现了622Mb/s SDH信号光CDMA系统光纤传输110km,其实测误码率小于10^-11。实验结果表明:系统能长期稳定工作,同时具有性能优良、结构简单、成本低廉、使用方便等突出优点。更多还原

【Abstract】 The experimental research on optical code division multiple access（OCDMA） system using 2-D optical frequency-time codes has been reported in this paper.In order to obtain the optimum OCDMA system’s performance,we have designed and developed successful SO-FFH codes,optical 2-D encoder/decoder with array of optical fiber gratings,ASE encoding wideband light resource.The OCDMA system transmit the SDH signal with data rate 622Mb/s 110km which BER<10^-11.This OCDMA system has outstanding advantages such as good performance,high stability,simple configuration,low cost,and convenient to use.更多还原