时频域二维编码OCDMA系统实验研究

The experimental research on OCDMA system using 2-D optical frequency-time coding

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。

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〈1011. This OCDMA system has outstanding advantages such as good performance, high stability, simple configuration, low cost, and convenient to use.