The main function of this solution is saving fiber by using passive big capacity DWDM MUX/DEMUX (AAWG technology) between two nodes, and provide services at third site by using OADM in between, and extend transmission distance between 2 sites by using EDFA. Our passive DWDM MUX/DEMUX solution can support up to 48 channels. Of course, if you don’t need so many channels, we can also customize for you. The longest distance we can transmit is 200km.