可调马赫-泽德干涉仪型NRZ到PRZ全光码型转换器  

All-optical NRZ-to-PRZ Converter Based on Tunable Mach-Zehnder Interferometer

作　　者：丁超[1] 张新亮[1] 余宇[1] 齐鸣[1] 

机构地区：[1]华中科技大学武汉光电国家实验室(筹)和光电子科学与工程学院,武汉430074

出　　处：《光子学报》2007年第8期1475-1479,共5页Acta Photonica Sinica

基　　金：教育部新世纪优秀人才计划(NCET-04-0715)资助

摘　　要：研制了一种基于光纤型马赫-泽德干涉仪的全光码型转换器.通过对工作温度的控制,实现了NRZ码到PRZ码的转换.分析了实现NRZ到PRZ码型的转换原理,讨论了干涉仪的结构设计.在10 Gb/s和20 Gb/s的码型转换实验中,得到较好的PRZ信号眼图.光谱分析表明,转换后的PRZ码包含了丰富的时钟分量,达到了理想的转换结果.结果表明,这种简单的光纤型非对称马赫-泽德干涉仪可以实现NRZ到PRZ的转换,并可以保持输出结果的稳定性.An all-optical format Converter based on fiber Mach-Zehnder interferometer （MZI） is investigated,format conversion from NRZ to PRZ can be realized by tuning the operation temperature. Operation principle for NRZ to PRZ signal is analyzed and the configuration design of the MZI is discussed. In conversion experiments for 10 Gb/s and 20 Gb/s NRZ signals,PRZ signals were achieved with good eye diagram. In spectra analysis, it can be concluded that there is much clock components in the PRZ signal. Results show that credible NRZ to PRZ format conversion can be realized through the simple fiber-based unsymmetrical MZI. The MZI can be used as a new type of all-optical format converter,and is possible to be applied in actual optical fiber communication systems.

关 键 词：马赫-泽德干涉仪( MZI) 码型转换 温度控制 时钟提取 

分 类 号：TN929.11[电子电信—通信与信息系统]