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Coarse Wave Division Multiplexing (CWDM) has gained prevalence in multi-wavelength digital transport architectures because it enables the use of very low cost un-cooled DFB laser transmitters. Moreover, powering requirements are reduced and reliability is increased.
Prisma CWDM filters provide the essential wavelength muxing/demuxing in these systems. Configurations of 1, 4, 8 or 10 channels are available to provide maximum design flexibility. The single channel version can be ordered in any of the 10 standard ITU-grid wavelengths and functions as Optical Add-Drop Mux (OADM). The 4, 8 and 10 channel versions are designed for minimum flat insertion loss.