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偏振延时干涉仪型CSRZ-Duobinary全光码型转换器

All optical CSRZ to duobinary converter based on polarization delay interferometer
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摘要 提出了利用偏振延时干涉仪(PDI)实现CSRZ到Duobi nary转换的全光码型转换器。根据偏振延时干涉仪的结构设计,分析了实现CSRZ到Duobi nary码型的转换原理,并仿真模拟了码型转换过程,证明了方案的可行性。通过改变双折射介质的差分群时延,讨论了它对干涉结果的影响,结果表明:不精确的差分群时延会导致输出Duobi nary码消光比下降和接收灵敏度的损伤。 An all-optical format conveter based on polarization delay interferometer（PDI） is investigated.Accroding to the configuration design of the PDI,operation principle for CSRZ to Duoinary signal is analyzed,and numerically simulation proves that the presented scheme is feasible.The influence of differential group delay on the interference results is also investigated,it shows that inaccurate differential group delay will lead to degration of extinction ratio and receiver sensitivity of the output Duoinary signals.
作者 张晓媛 于晋龙 王文睿 杨恩泽
机构地区 天津大学电子信息工程学院光纤通信实验室
出处 《光通信技术》 CSCD 北大核心 2012年第2期8-11,共4页 Optical Communication Technology
关键词 光纤通信 码型转换 偏振延时干涉仪 差分群时延 optical fiber communication format conversion polarization delay interferometer（PDI） differential group delay（DGD）
分类号 TN929.11 [电子电信—通信与信息系统]
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参考文献11

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二级参考文献9

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光通信技术
2012年 第2期

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