摘要
40 Gbit/s波分复用系统已开始商用,在这种系统中,差分正交相移键控(DQPSK)比开关键控有更高的谱效率并且对色散和偏振模色散等有更高的鲁棒性。文章从40 Gbit/s波分复用系统传输性能要求入手,对DQPSK的原理和实现方式进行了分析,并用精确的仿真验证了40 Gbit/s DQPSK系统的传输性能。
The 40 Gbit/s WDM system has begun to be commercially deployed. Differential Quadrature Phase Shift Keying （DQPSK） has higher spectral efficiency and greater robustness to chromatic and polarization mode dispersion than On-Off Keying （OOK）. Starting with the transmission performance requirements of the 40 Gbit/s WDM system, the paper analyzes the principle and implementation approach and verifies its transmission performances by accurate simulation.
出处
《光通信研究》
北大核心
2009年第3期7-8,17,共3页
Study on Optical Communications
