Combined with the optical amplifier technology, the DWDM technology transmits SDH signals, and at the type of DWDM+EDFA+SDH, becomes the best selection in Private Network.

• 密集波分复用技术与光放大技术相结合，传输SDH信号，以DWDM+EDFA+SDH的形式，成为专用型光纤通信传送网的最佳选择。