不同占空比的光双二进制码型实现及传输

Realization and transmission of optical duobinary code based on different duty cycle

设计了基于级联型马赫-曾德尔调制器(MZM)的光非归零-双二进制码(NRZ-DB)、光66%归零-双二进制码(66%RZ-DB)和光33%归零-双二进制码(33%RZ-DB)的产生结构,推导了3种码型的理论表达式,分析了其时频域结构,并对3种码型的传输特性进行了实验验证。

This paper proposes the generating structures of optical not return to zero-duobinary （NRZ-DB）, the optical 66% return to zero-duobinary （66%RZ-DB） and the optical 33% return to zero-duobinary （33% RZ-DB）, which were based on series MZM, discusses their theoretical expressions and time domain and fre- quency domain, and carries out the experiments to verify their transmission properties.