100Gbit/s级联交错相位调制码型信号的传输性能  

100 Gbit/s transmission performance of serial staggered phase-shift keying modulation formats signal

作　　者：邵宇丰[1] 张俊文[1] 黄博[1] 方武良[1] 迟楠[1] 黄德修[1] 

机构地区：[1]复旦大学通信科学与工程系专用集成电路与系统国家重点实验室,上海200433

出　　处：《红外与激光工程》2010年第3期464-468,共5页Infrared and Laser Engineering

基　　金：国家863计划资助项目(2009AA01Z253;2007AA01Z260);973计划资助项目(2010CB328300);国家自然科学基金资助项目(600837004;60777010);曙光学者基金资助项目;中国博士后科学基金资助项目(20090460593);上海市博士后基金资助项目(10R21411600)

摘　　要：介绍了一种应用于100Gbit/s传输系统的新型光信号调制码型——交错差分相位调制码(SDPSK)。该码型的解调仅通过一个1bit延时的马赫曾德尔延时干涉仪和一个平衡接收机即可实现。与传统的4种级联相位调制码型进行长距离传输特性比较后证明:基于NRZ码和50%占空比RZ码的SDPSK码与相同包络的DPSK码具有几乎相同的色散容限和一阶偏振模色散容限;与有相同包络的DPSK信号和差分四相相移键控码(DQPSK)信号相比,基于NRZ码和RZ码的SDPSK信号具有更高的抵抗非线性负面效应的能力;经过90km普通单模光纤传输并采用16km色散补偿光纤进行后置色散补偿后,通过带宽值大于125GHz的三阶高斯滤波器检测光信号,RZ-SDPSK信号的接收性能最佳。A novel staggered differential phase-shift keying （SDPSK） modulation format used for 100 Gbit/s transmission system was proposed. The 2 bit/symbol optical signal could be simply demodulated by using a 1 bit delayed Mach-Zehnder interferometer and a balanced receiver. Compared with the transmission characteristics of the four types of staggered phase modulation formats, such as NRZ-DPSK, RZ-DPSK, NRZ-DQPSK, and RZ-DQPSK formats, it was found that the chromatic and polarization-mode dispersion tolerances of both the SDPSK and DPSK formats with the NRZ and RZ （with 50% duty cycle） shape formats were almost identical, the SDPSK signal could allow larger nonlinear tolerance than the DPSK or DQPSK signal, additionally, the best transmission performance for the RZ-SDPSK signal could be attained if it transmitted through 90 km standard single-mode fiber and 16 km dispersion-compensating fiber, and launched into a third-order Gaussian optical band-pass filter with beyond 125 GHz bandwidth.

关 键 词：交错相位调制 非归零 归零 100Gbit/s 

分 类 号：TN929.11[电子电信—通信与信息系统]