It is more and more instancy to develop All Optical Network(AON)as the progress in area of communication technology. The technology of optical add drop multiplexing(OADM)is one of the key technologies to implement AON. CWDM OADM can provide multiplex and demultiplexing or the ability to add-drop multiple fibers to one. Different styles of OADM OADM (CWDM-MUX-AD-xxxx=):The […]