级联3个相位调制器产生光8-DPSK的新方法  

A novel method to generate optical 8-DPSK by cascading three phase modulators

作　　者：刘洪波[1] 

机构地区：[1]湖南省公安消防总队岳阳市支队司令部,湖南岳阳414000

出　　处：《光通信技术》2010年第6期42-45,共4页Optical Communication Technology

摘　　要：提出级联3个相位调制器产生光NRZ-8-DPSK,再级联1个单臂马赫-曾德尔(M-Z)调制器产生光RZ-8-DPSK的新方案。比较了背对背系统中60Gb/s的光NRZ-8-DPSK、光差分相移键控非归零码(NRZ-DPSK)和光差分四相相移键控码(NRZ-DQPSK)的信号频谱特性。A novel method for optical non-retum-to-zero 8 phase-shift keying signals （NRZ-8-DPSK） generation by using three phase modulators was proposed, and a scheme to generate optical return-to-zero 8 phase-shift keying signals （RZ-8-DPSK） by cascading a single-arm M-Z modulator was also put forward. Three optical spectra diagrams of60Gb/s NRZ-8-DPSK signals, NRZ-DPSK signals and NRZ-DQPSK signals were compared.

关 键 词：光纤通信 光NRZ-8-DPSK 光RZ-8-DPSK 相位调制器 单臂M-Z调制器 

分 类 号：TN929.11[电子电信—通信与信息系统]