Active vs. Passive Optical Network Solutions
There are two main solutions for building CWDM and DWDM backbone networks:
Active - built from transponders and muxponders providing full optical demarcation point. This solution is agnostic to the routers, switches, and ADMs within the network.
Passive - built from passive filters and colored optics plugged into different equipment such as routers, switches and ADMs (add drop multipelxer).