波兰电信运营商EXATEL日前联合宣布,双方携手成功完成业界首个基于单载波400G波分系统的现网测试,实现高速传送领域新的关键技术突破。当前主流商用的40G/100G波分系统皆为单载波系统,而400G线路信号速率提升为100G的4倍,单载波400G面临高速信号畸变严重和时钟失稳的业界难题,故现有400G系统 Polish telecom operator EXATEL announced recently that both parties have successfully completed the industry’s first live network test based on the single-carrier 400G wavelength division system to achieve a new breakthrough in key technologies for high-speed transmission. Currently, the mainstream commercial 40G / 100G wavelength division systems are all single-carrier systems, while the signal speed of 400G lines is raised to 4 times that of 100G. The single-carrier 400G is faced with the industry problem of high-speed signal distortion and clock instability. Therefore, the existing 400G system