基于光纤布拉格步进啁啾光栅的OCDMA频域编/解码器的探索  

Exploration of code division multiple access (OCDMA) spectral encoder/decoder based on fiber grating

作　　者：陈金华[1] 方晓惠[1] 俞小青[1] 曹达仲[2] 

机构地区：[1]赣南师范学院物理与电子科学系,江西赣州341000 [2]天津大学电信学院,天津300072

出　　处：《通信学报》2005年第3期51-57,共7页Journal on Communications

摘　　要：依据频域编码的理论,分析和论证了基于光纤布拉格步进啁啾光纤光栅的 OCDMA 频域编/解码器的原理。通过对地址码做一映射变换,在步进啁啾光纤光栅上以相移的方式嵌入相应的多址码,实现了基于步进啁啾光纤光栅的光码分复用频域相位编/解码;文章给出了编/解码器的等效模型;对该编/解码器的仿真结果得到了很好的相关输出,证明了这种编/解码方法的可行性;并对影响基于此编解码器系统性能的参数进行了分析。According to the spectral encoding/decoding theory, This paper analyses and proves the spectral encoding/decoding theory of OCDMA based on fiber grating. A mapping code is introduced and designed phase shift is inserted to the corresponding subgrating of SCFBG according to the mapping code. At the same time the paper give a equivalent model of encoder/ decoder. A good correlation is offered by numerical simulation for encoder/decoder, proving the feasibility of this encoding/decoding method. In the end the paper analyses the factors which affect the performance of this system.

关 键 词：光码分复用 编码 编/解码器 光纤光栅 

分 类 号：TN91[电子电信—通信与信息系统]