1.dual fiber cwdm mux/demux 2.16 channel cwdm module 3.fast ... )Dual fiber is used for both the network and the GBIC connectionsLow insertion loss - high isolationSimple to install, requires no configurationFully universal ... lightwave equipment including, Cisco, Nortel, Alcatel, Ciena, Fujitsu, etc. Dual Fiber 16-Channel CWDM Mux/Demux