四维信号调制格式在高速光传输系统中的应用
pplication of 4-dimensional modulation formats in high-speed optical transmission system
本论文研究了以偏振切换-正交相移键控（PS-QPSK）和双偏振-正交相移键控（DP-QPSK）信号为代表的典型四维信号调制格式的产生原理，理论分析了PS-QPSK和DP-QPSK信号的性能优势。针对这两种信号，提出了一种新的调制方案，该方案在保持PS/DP-QPSK信号优势的同时减少了发射端使用的马赫增德尔调制器的数量，大大降低了发射机成本。通过仿真结果分析验证了该方案的可行性，得出在相同比特率（84 Gb/s）和相同波特率（28 GBd）条件下，PS-RZ-QPSK比DP-RZ-QPSK信号具有更好的传输性能。
In this paper the modulation principle of typical 4-dimensional signals is demonstrated. Performance of dual-polarization quadrature phase shift keying signal and polarization-switched QPSK are proved. A novel modulation sheme of DP/PS-RZ-QPSK is proposed in this paper. The scheme presents similar performance as traditional structure while reducing transmitter cost by less use of Mach-Zehnder modulator. The simulate result indicates PS-RZ-QPSK can achive a better transmission performance than DP-RZ-QPSK at the same bit rate (84 Gb/s) and baud rate (28 GBd), and proves showing the feasibility of novel modulaiton scheme.
徐蕾、张阳安
光电子技术通信
高速光通信偏振切换正交相移键控双偏振正交相移键控新型调制方式
high-speed optical transmission systempolarization-switched quadrature phase shift keyingdual-polarization quadrature phase shift keyingnovel modulation scheme
徐蕾,张阳安.四维信号调制格式在高速光传输系统中的应用[EB/OL].(2012-12-28)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201212-1096.点此复制
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