The JDSU 100 GHz multichannel mux/demux modules, based on thin-film filter (TFF) technology, provide extremely high performance. With low insertion loss, low polarization sensitivity, and high temperature stability, these modules are well suited to DWDM network applications. These fixed mux/demux modules offer low-cost wavelength management solutions for long-haul and metro applications. In addition, they are easily customizable, and can be configured based on customer-specific channel plan, packaging type, and connector type.