随着波分复用(WDM)技术的迅速商用化，骨干网络传输带宽呈现爆炸式增长的趋势，这使得网络生存性变得越来越重要。
With the rapid commercial applications of the WDM technology and the explosive growth of the transmission bandwidth of backbone networks, network survivability has become increasingly more important.
它能提供方便有效的数据复用和解复用功能，并能可靠地传输数据。
It provides high availability and very reliable transport with powerful multiplexing and demultiplexing capabilities.
波分复用(WDM)技术是增大光纤传输容量的方法，但是在高速率、长距离wdm系统中传输性能受到限制。
WDM technology is a method for increasing the transmission capacity of optical fiber, but the transmission performance in WDM system with high speed and long distance is limited.
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