【摘要】 对基于布拉格光纤光栅(FBG)和二维时域/频域编码技术的光码分多址(OCDMA)系统进行深入的研究,提出了一种新型的应用二维时域/频域编码技术的OCDMA码分插复用器(ADM)单元。设计的ADM单元基于FBG的编解码器结构性价比高,可以简单地从网络中取下相应码的数据同时向网络中添加本地数据。最后,把所提出的ADM单元应用于高速OCDMA系统进行模拟仿真,性能良好。更多还原

【Abstract】 The optical code-division multiple access(OCDMA) based on fiber Bragg gratings(FBG) and two-dimensional wavelength-time code is studied theoretically and experimentally.A novel OCDMA add-drop multiplexer is introduced to drop a code channel without disturbing the rest code channels.The proposed add-drop multiplexer is cost-effective,and the channel-dropping scheme is verified in a simulation.更多还原