The four-channel and two-channel OADM (EWDM-OADM4= and EWDM-OADM2=) allows you to respectively add/drop four or two channels (with different wavelengths) and combine them with up to 8 CWDM channels into one pair of fiber. Dual fiber is used for both the network connection and the transceiver connections. The two OADMs are equipped with a port that allows you to connect to the booster amplifier and support the following wavelengths:

•EWDM-OADM4—1542.94 nm, 1542.14 nm, 1540.56 nm, 1539.77 nm.

•EWDM-OADM2—1560.61 nm, 1559.79 nm.