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一、100G传输技术的特点不同于以往的2.5G/10G/40G波分传输系统,100G光传输在实现上伴随着一系列重大变革,包括偏振复用相位调制技术、基于数字信号处理的数字相干接收技术和基于软判决的第三代超强纠错编码技术等。基于数字相干接收PM-QPSK调制的100G光传输技术在长距离光传输技术史上具有里程碑意义,这不仅仅体现在100G光传输性能的巨大提升和建网运维的显著优势上,更是由于其为后续更高速率传输技术的发展奠定了基
First, the characteristics of 100G transmission technology Different from the previous 2.5G / 10G / 40G wavelength division transmission system, 100G optical transmission is accompanied by a series of major changes in implementation, including polarization multiplexing phase modulation technology, digital signal processing based on digital coherent Receiving technology and the third generation of super soft error correction coding technology based on soft decision. 100G optical transmission technology based on digital coherent reception of PM-QPSK modulation is a milestone in the history of long-distance optical transmission technology. This is not only reflected in the huge improvement of 100G optical transmission performance and significant advantages of network operation and maintenance, but also due to its Which laid the foundation for the development of subsequent higher-rate transmission technologies