基于光纤光参量放大的多通道全光非归零/归零码转换器  

Multi-Channel All-Optical Non-Return-to-Zero to Return-to-Zero Format Converter Based on Fiber Optical Parametric Amplifier

作　　者：韩丙辰[1,2] 于晋龙[1] 罗俊[1] 王文睿[1] 王菊[1] 吴波[1] 郭精忠[1] 杨恩泽[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]山西大同大学物理与电子科学学院,山西大同037009

出　　处：《中国激光》2009年第11期2962-2965,共4页Chinese Journal of Lasers

基　　金：国家自然科学基金重点项目(60736035);国家863计划(2007AA01Z272);新世纪优秀人才支持计划(NCET-06-0248);山西大同大学青年项目(2008Q10)资助课题

摘　　要：提出了一种基于光纤光参量放大器(FOPA)的多通道全光非归零码(NRZ)/归零码(RZ)调制格式转换的方案。该方案中,非归零码信号与同步的时钟抽运光共同注入到高非线性光纤(HNLF)中,由高非线性光纤构成的参量放大器把非归零码信号转换为归零码信号,同时不改变信号光的波长。多通道的码型转换器以两路10Gb/s的非归零码进行了实验论证。转换后的归零码信号的信噪比(SNR)高于7.6dB,其脉冲宽度约为30ps,并且具有3dB的消光比(ER)提高。根据多通道码型转换器的实现原理,该码型转换器可以应用于40Gb/s或更高比特率的多通道码型变换操作。A multi-channel all-optical modulation format converter from non-return-to-zero （NRZ） to return-to-zero （RZ） is reported based on the fiber optical parametric amplifier （FOPA）. In this scheme,the NRZ data together with a synchronized pump clock are injected into the highly non-linear fiber （HNLF）. The FOPA consisting of HNLF converts the NRZ signal to RZ signal,and the wavelength of the signal is preserved. The multi-channel operation at 10 Gb/s is demonstrated experimentally. The sigal to noise ratio （SNR） of the converted RZ signals is no less than 7.6 dB with 3 dB enhancement of extinction ratio （ER）. The pulse-width of the obtained RZ signal is around 30 ps. According to the operating principle of the multi-channel code converter,the converter is considered to be proper for the multi-channel operation at 40 Gb/s or even higher bit-rates.

关 键 词：光通信 格式转换器 光纤光参量放大器 高非线性光纤 

分 类 号：TN929.11[电子电信—通信与信息系统]