Coarse Wavelength Division Multiplexing (CWDM), a WDM technology, is characterized by wider channel spacing than Dense WDM (DWDM) as defined in ITU-T Rec. G.671. CWDM systems can realize cost-effective applications, through a combination of uncooled lasers, relaxed laser wavelength selection tolerances and wide pass-band filters. CWDM systems can be used in transport networks in...
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As the surge for additional convergence technology and increased-bandwidth continues, CWDM Ethernet-over-fiber seems to be a viable solution for service providers. CWDM involves both sides of the equation. That is, reducing operating costs and increasing revenue. As the traditional service revenue declines, service providers shift their focus on finding new sources of services...
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