Fully Compatible with All ITU-T 1G/10G/25G/40G/100G DWDM Optics Multiplexing of 40 Channels with 1310nm and Monitor a Dark Fiber Network IL<3.5dB , 100GHZ DWDM AAWG Technology Passive devices, No Power No Cooling Required Support Metro, Regional and Long Haul DWDM Networks