Dense Wavelength Division Multiplexing (DWDM) networks need multiplexer/demultiplexer (MUX/DEMUX) modules to combine and split wavelength channels at standard ITU grid. These modules are generally called DWDM MUX/DEMUX. Coupled with highly reliable passive optics (e.g., DWDM SFP/SFP+), DWDM MUX/DEMUX modlues let operators make full use of available fiber bandwidth in local loop and enterprise architectures. Fiber-Mart provides a series of DWDM MUX/DEMUX modules with as more as 96 channels (50GHz, 100GHz, or 200GHz 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.