1. Customer Request:

Dual Fiber
Cable Length & Line attenuation：as below picture shown,

Data Rate：
single lambda Site A— Site B 400G,
single lambda Site B— Site C 100G, Site C— Site D 100G, Site D— Site F 100G

Channels: 1 channel
Need expand in the future

DWDM Solution description:
Considering future expansion, place 40-channel MUX&DEMUX in each site.

HTF team help customer to build 1x100G, 1x400G first. For future expanded and upgraded, only need to add 100G/200G/400G transponder, very smoothly.