Optical Add-Drop Multiplexer (OADM) is used for multiplexing and routing different channels of fiber into or out of a single fiber. The DWDM OADM is designed to optically add/drop one or multiple DWDM channels into one or two fibers. It allows you to build complex DWDM networks establishing dedicated channels between locations based on the use of individual wavelength transmission. Fiber-Mart provides a series of DWDM OADM modules with as more as 18 channels (100GHz spaced) in simplex or duplex configurations. All the DWDM modules are available with three types of packaging: ABS Pigtailed Box, Rack Chassis and LGX Cassette.